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[Bug 877789] Re: Choppy Audio After Upgrade To 11.10

 

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On 2010-05-14T13:52:29+00:00 JasonPorter wrote:

Several Launchpad bug reports in process report radeon KMS conflicts
with Intel wifi and audio output, causing wireless to hang/drop until
power cycle and audio to crackle during any high GPU load.  Disabling
KMS as a workaround returns normal system operation.

Relevant Launchpad reports:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/564376
https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/578342
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/571770
And one on Bugzilla:
https://bugzilla.kernel.org/show_bug.cgi?id=15912

My own hardware is a Thinkpad T60 with Radeon X1400 and Intel wireless
(iwl3945 driver) running vanilla Ubuntu 10.04.  Users of Radeon X1250,
X1300, and Xpress 200M chipsets have also reported the same behavior, on
Lenovo, Dell and LG laptops.  Using a mainline kernel does not change
the behavior.

This may possibly be due to a difference in PCI configuration between
KMS and UMS, they use different IRQs for "Pin A" as detailed in the
Bugzilla report linked above.

Thanks for any assistance you can provide!  And thanks for all your hard
work!

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/0

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On 2010-05-14T20:59:48+00:00 Øyvind Stegard wrote:

Confirming this one, Thinkpad Z61m, ATI X1400. However, the IRQ
difference does not seem to matter for the audio problems (I've tested
with radeon KMS both with and without MSI, which is the difference
between the two PCI configs listed in bug at
https://bugzilla.kernel.org/show_bug.cgi?id=15912).

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/1

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On 2010-05-15T11:40:46+00:00 agd5f wrote:

Is there an option in your bios to assign different irqs to different
pci devices?  Some systems set every device to the same irq.

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/2

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On 2010-05-15T11:48:32+00:00 Maarten Fonville wrote:

I don't think it is directly an IRQ issue that can be solved in the BIOS.
Because on my girlfriend's laptop which is also hit by this problem the radeon takes IRQ 17 with IO-APIC-fasteoi and hda_intel takes IRQ 24 with PCI-MSI-edge

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/3

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On 2010-05-15T11:51:03+00:00 Maarten Fonville wrote:

(In reply to comment #3)
> I don't think it is directly an IRQ issue that can be solved in the BIOS.
> Because on my girlfriend's laptop which is also hit by this problem the radeon
> takes IRQ 17 with IO-APIC-fasteoi and hda_intel takes IRQ 24 with PCI-MSI-edge

Actually, before booting the kernel itself (thus it can not be seen in DMESG) there is the message that starts with:
pci 0000:00:00.0: address space collision [..more stuff here..]
Just like in this mail I believe: http://lkml.org/lkml/2010/3/12/92

I don't know whether this could be relevant.

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/4

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On 2010-05-17T06:40:57+00:00 Øyvind Stegard wrote:

I have no messages about address space collisions in kernel boot log.
I'll add my hardware info to this bug tomorrow (interrupts, PCI, dmesg,
Xorg, etc).

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/5

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On 2010-05-17T13:59:13+00:00 JasonPorter wrote:

This appears to also be causing kernel crashes on some systems when wifi
is powered off using the hardware switch.  Disabling radeon KMS causes
the crash behavior to disappear.  I will inform devs in the upstream bug
reports on that issue.

Reported in https://bugs.launchpad.net/ubuntu/+source/linux/+bug/555286

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/6

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On 2010-05-17T14:00:10+00:00 JasonPorter wrote:

(In reply to comment #6)

Oops, nevermind... I'm already upstream. Too many tabs open, sorry.

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/7

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On 2010-05-17T14:12:56+00:00 agd5f wrote:

Is there an option in your bios to assign different irqs to different pci
devices?  Some systems set every device to the same irq.  If so, please try changing the setting to auto, or select different irqs for each device and see if that helps.  Also, please try both with and without msi enabled (boot with pci=nomsi).

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/8

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On 2010-05-18T19:19:44+00:00 Øyvind Stegard wrote:

(In reply to comment #8)
> Is there an option in your bios to assign different irqs to different pci
> devices?  Some systems set every device to the same irq.  If so, please try
> changing the setting to auto, or select different irqs for each device and see
> if that helps.  Also, please try both with and without msi enabled (boot with
> pci=nomsi).

Yes. However, the list looks very uninformative. It's under PCI config,
and basically contains just INTA-> 11, INTB -> 11, INTC -> 11, and so
on. Tried setting to Auto-select on all entries (instead of 11). System
booted OK, but it didn't help (on KMS+audio problems). Tried assigning
sequentially from IRQ 3 and up, but then I got a really loud Thinkpad-
style alarm beep, system didn't get past POST, and BIOS informing that
network controller was missing IRQ. So obviously I switched back to
default settings. The /proc/interrupts list didn't really look any
different with BIOS-autoconfig for PCI IRQs (IIRC).

Booting with option pci=nomsi does not help at all, even though it
definitely affects IRQ config, since /proc/interrupts contains no MSI-
entries when booting with this option.

I will now be attaching some info for system running 2.6.34 kernel on
Ubuntu Lucid x86 with ATIX1400 (KMS-mode). System has severe audio
glitching with KMS, and no glitching at all in UMS mode.

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/9

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On 2010-05-18T19:22:27+00:00 Øyvind Stegard wrote:

Created attachment 35734
Kernel boot log 

Audio glitching reproduced immediately after logging in to X session.

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/10

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On 2010-05-18T19:23:05+00:00 Øyvind Stegard wrote:

Created attachment 35735
Contents of /proc/interrupts

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/11

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On 2010-05-18T19:23:42+00:00 Øyvind Stegard wrote:

Created attachment 35736
Contents of /proc/interrupts with MSI disabled

Does not resolve issue.

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/12

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On 2010-05-18T19:27:02+00:00 Øyvind Stegard wrote:

Created attachment 35737
PCI device config

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/13

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On 2010-05-18T19:27:45+00:00 Øyvind Stegard wrote:

Created attachment 35738
Xorg startup log

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/14

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On 2010-05-18T20:05:53+00:00 Øyvind Stegard wrote:

The test setup I use to quickly reproduce and verify that the problem is
there:

1) Play a pure sound which easily revelase playback glitches:
$ gst-launch-0.10 audiotestsrc ! pulsesink

2) Play some video (doesn't matter what) with MPlayer, using plain x11 output and no sound:
$ mplayer /path/to/some/movie.avi -vo x11 -zoom -nosound

3) Test audio starts glitching and the glitching becomes worse if I put
the video in fullscreen.

And some observations about test:

1) There is not much load on system during test (MPlayer uses around 40%
CPU, Xorg floats under 12% CPU, for a 1024x576 video with no sound).

2) There is a lot less audio glitching if I run things in a completely
composited environment (e.g. Compiz with no unredirection for fullscreen
windows). If I *do* unredirect fullscreen windows with Compiz the
glitching becomes worse in fullscreen.

3) There is alomst no glitching at all if using XV for video playback in
the test, instead of plain old x11. Obviously that's not going to help
for apps that don't use XV, like fullscreen Flash video streaming or any
affected non-video app.

4) The glitching is worse when video window is full screen.

5) HDA intel driver typically always reports that IRQ timing work-around
has been activated. This doesn't happen in UMS-mode.


And some observations not just related to the specific test setup:
1) Flash fullscreen video playback causes more severe audio glitches if *not* running composited in fullscreen, for instance under Compiz with "Unredirect fullscreen windows" enabled. This is what typically also takes down wireless (just happened now with current setup, as I was testing Flash and writing this).

2) Flash fullscreen video causes glitches even when redirected in
composited env.

3) Flash doesn't use XV, seems to correspond well with MPlayer -vo x11
being much worse than when using -vo xv.

4) There are no playback issues with video during any of these tests,
the video is smooth, system not overloaded. And besides, the test sound
generator requires almost no resources at all.

5) [ 1535.437114] CE: hpet increased min_delta_ns to 7500 nsec
Don't really know the meaning of this one, but it typically appears during problems with wireless and/or audio when running under KMS. Kernel compensating for what is seen as accuracy issues with system timing ?

6) It doesn't have to be MPlayer-vo-x11 or Flash that triggers problem,
I just use them because they so easily reproduce it. I have heard audio
popping when scrolling Firefox pages or moving windows around, and I've
managed to take down wireless when launching Neverball (OpenGL-game).

7) No matter what IRQ config or snd-hda-intel options I test, the
problems are always there with KMS and disappear with UMS.

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/15

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On 2010-05-19T13:21:34+00:00 JasonPorter wrote:

To add my own results... booting with pci=nomsi doesn't seem to have an
effect on my system (Thinkpad T60).  I have the same PCI options in BIOS
as Øyvind reports, all are set to "11" by default but changing to Auto
seems to have very little effect on actual behavior after boot.  I will
test further to see if there are any other differences with MSI off, but
so far it doesn't seem to have helped.

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/16

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On 2010-05-19T21:40:44+00:00 agd5f wrote:

Does booting with radeon.disp_priority=1 help?

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/17

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On 2010-05-19T21:43:14+00:00 agd5f wrote:

Apply the settings with a cold boot.

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/18

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On 2010-05-19T22:19:47+00:00 Øyvind Stegard wrote:

(In reply to comment #17)
> Does booting with radeon.disp_priority=1 help?

Does not help on my hardware. Tested with kernel 2.6.34, cold boot.

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/19

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On 2010-05-19T22:31:42+00:00 JasonPorter wrote:

(In reply to comment #17)
> Does booting with radeon.disp_priority=1 help?

For some reason, passing that option at boot seems to disable KMS on my
system. I've tried it both without a radeon.modeset declaration, and
with radeon.modeset=1, and in both cases Xorg.0.log shows KMS to be
disabled when radeon.disp_priority=1 is on.

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/20

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On 2010-05-19T22:44:54+00:00 agd5f wrote:

(In reply to comment #20)
> (In reply to comment #17)
> > Does booting with radeon.disp_priority=1 help?
> 
> For some reason, passing that option at boot seems to disable KMS on my system.
> I've tried it both without a radeon.modeset declaration, and with
> radeon.modeset=1, and in both cases Xorg.0.log shows KMS to be disabled when
> radeon.disp_priority=1 is on.

If your kernel is too old, the option is not valid and the module won't
load.  See modinfo radeon to verify.

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/21

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On 2010-05-19T22:57:27+00:00 Øyvind Stegard wrote:

I've noticed that the audio glitches become a lot worse when many
windows are open and running Compiz (I did an artificial test). I can
open lots of windows on one desktop, switch back to an empty desktop,
open a single window there and trigger audio drop-outs (simple test
sound) just by toggling maximization state of that single window, even
though all the other windows are not in view and system load is close to
nil. Basically, most Compiz-operations besides simple window movement
will cause glitches.

Interestingly, I might have pushed things too far, since Compiz crashed with this message:
drmRadeonCmdBuffer: -12. Kernel failed to parse or rejected command stream. See dmesg for more info.

Kernel log contained this:
[  543.577306] [drm:radeon_cs_ioctl] *ERROR* Failed to parse relocation -12!
[  574.532539] [drm:radeon_cs_ioctl] *ERROR* Failed to parse relocation -12!
[  742.437808] [drm:radeon_cs_ioctl] *ERROR* Failed to parse relocation -12!

* This was all with radeon.disp_priority=1, cannot say whether that mattered or not.
* Don't know the consequences of using the Ubuntu default Xorg-driver/libdrm/DRI-stuff together with 2.6.34 mainline kernel DRM. I haven't noticed any bad things in particular during normal usage (quite the contrary, KMS performance with 2.6.34 seems better), except for the issues at hand of course.
* The version of the radeon module in the default Ubuntu kernel does not have disp_priority option.

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/22

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On 2010-05-19T23:00:25+00:00 JasonPorter wrote:

(In reply to comment #21)
> If your kernel is too old, the option is not valid and the module won't load. 
> See modinfo radeon to verify.

I'm running the standard 2.6.32-22-generic that is current in Ubuntu
Lucid.

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/23

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On 2010-05-20T09:29:40+00:00 Michel-daenzer wrote:

Has it been considered that this might be due to interrupt latency
caused by radeon KMS? E.g. spending too much time in the IRQ handler or
unnecessarily running it with other IRQs disabled.

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/24

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On 2010-05-26T15:03:58+00:00 Øyvind Stegard wrote:

Large blocks of screen updates seems to be most problematic. I can take
down wireless by scrolling through a maximized gnome-terminal, for
instance.. Same thing will fullscreen Flash and mplayer -fs -vo x11 ..

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/25

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On 2010-06-07T18:03:04+00:00 Łukasz Krotowski wrote:

It seems that problem does not occur in current drm-radeon-testing
(9e67e5b1a6fd4bdca48a9c267386afb236d08783). At least sound does not
skips.

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/26

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On 2010-06-14T19:36:52+00:00 Maarten Fonville wrote:

(In reply to comment #26)
> It seems that problem does not occur in current drm-radeon-testing
> (9e67e5b1a6fd4bdca48a9c267386afb236d08783). At least sound does not skips.

I myself don't have the possibility to test this at the moment. I will only have access to the laptop involved in about 3 weeks.
But maybe Oyvind could this the drm-radeon-testing branch on his laptop?

And if it does solve the problem, we should bisect to find out what does
solve this problem.

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/27

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On 2010-06-14T21:42:56+00:00 Øyvind Stegard wrote:

(In reply to comment #27)
> (In reply to comment #26)
> > It seems that problem does not occur in current drm-radeon-testing
> > (9e67e5b1a6fd4bdca48a9c267386afb236d08783). At least sound does not skips.
> 
> I myself don't have the possibility to test this at the moment. I will only
> have access to the laptop involved in about 3 weeks.
> But maybe Oyvind could this the drm-radeon-testing branch on his laptop?
> 
> And if it does solve the problem, we should bisect to find out what does solve
> this problem.

Assuming you mean this branch:
http://git.kernel.org/?p=linux/kernel/git/airlied/drm-2.6.git;a=shortlog;h=refs/heads/drm-radeon-testing

I compiled the branch head and gave it a spin. KMS performance is noticeably better compared to 2.6.32(+drm2.6.33)-kernel in Ubuntu. However I only had to open 20-25 windows and do some jiggly Compiz effects to cause:
1. Severe audio skipping/crackling whenever something was moving, changing, minimizing, maximizing, etc.
2. Wireless was extremely unstable, in fact I add to boot back into Lucid kernel to write this comment, because it kept falling down. Of course, that might just be the kernel itself, I don't know.

Conclusion is that nothing is better on my hardware with this kernel,
except the KMS performance (Compiz feels somewhat snappier when window
count is high).

So it's back to good old UMS and DFS-corruption for me :) :/ ...

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/28

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On 2010-07-14T20:44:20+00:00 Flockmock wrote:

Hi,
I am affected by this bug as well and tried to bisect it. My bisect log:

git bisect start
# good: [60b341b778cc2929df16c0a504c91621b3c6a4ad] Linux 2.6.33
git bisect good 60b341b778cc2929df16c0a504c91621b3c6a4ad
# bad: [57d54889cd00db2752994b389ba714138652e60c] Linux 2.6.34-rc1
git bisect bad 57d54889cd00db2752994b389ba714138652e60c
# good: [47871889c601d8199c51a4086f77eebd77c29b0b] Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
git bisect good 47871889c601d8199c51a4086f77eebd77c29b0b
# bad: [1154fab73ccbab010cfaa272b6987c624cfd63c6] SLUB: Fix per-cpu merge conflict
git bisect bad 1154fab73ccbab010cfaa272b6987c624cfd63c6
# good: [3e9cc2f3b7ddabbbfc9abd043887030c669380aa] firewire: ohci: add module parameter to activate quirk fixes
git bisect good 3e9cc2f3b7ddabbbfc9abd043887030c669380aa
# good: [5619c28061ff9d2559a93eaba492935530f2a513] x86: Convert i8259_lock to raw_spinlock
git bisect good 5619c28061ff9d2559a93eaba492935530f2a513

so there are ~800 commits left and now every kernel will fail to boot due to some SCSI issues, I tried many kernels "by hand" via 'git visualize'. Can anybody track this further down, perhaps someone with no SCSI devices in their machines? ;)
thanks a lot and we should really get this regression, 2.6.35-rc5 is affected as well.
cheers, florian

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/29

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On 2010-08-04T01:47:23+00:00 Ben Hutchings wrote:

I have one user report that this was fixed between Debian kernel
versions 2.6.32-15 and 2.6.32-18, which have radeon drivers from
2.6.33.5 and 2.6.33.7 respectively. So one of the changes to output
handling in there may have fixed this.

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/30

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On 2010-08-04T02:03:32+00:00 Ben Hutchings wrote:

(In reply to comment #30)
> I have one user report that this was fixed between Debian kernel versions
> 2.6.32-15 and 2.6.32-18, which have radeon drivers from 2.6.33.5 and 2.6.33.7
> respectively. So one of the changes to output handling in there may have fixed
> this.

Sorry, the latter version is actually 2.6.33.6. There aren't many radeon
changes between these:

commit f417b91c30e84e759d395f45d524eeee95250822
Author: Dave Airlie <airlied@xxxxxxxxxx>
Date:   Sat May 29 06:50:37 2010 +1000

    drm/radeon: fix the r100/r200 ums block 0 page fix

commit 1a0c0aa4945dfa8ac3adc2818e166b40eb5dc346
Author: Dave Airlie <airlied@xxxxxxxxxx>
Date:   Wed Feb 24 17:17:13 2010 +1000

    drm/radeon: r100/r200 ums: block ability for userspace app to trash 0 page a
nd beyond

commit 7840726875499c2e4b195776f2a0090935d33f39
Author: Alex Deucher <alexdeucher@xxxxxxxxx>
Date:   Tue May 18 00:23:15 2010 -0400

    drm/radeon/kms/atom: fix typo in LVDS panel info parsing

commit 66ff9ff4525f96b24867f734d99950b5d654f76b
Author: Alex Deucher <alexdeucher@xxxxxxxxx>
Date:   Tue May 18 19:26:46 2010 -0400

    drm/radeon/kms: reset ddc_bus in object header parsing

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/31

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On 2010-08-04T07:23:03+00:00 agd5f wrote:

(In reply to comment #31)
> 
> Sorry, the latter version is actually 2.6.33.6. There aren't many radeon
> changes between these:

None of these are really likely to be related to this bug; the first 2
are ums, and the other two were fairly specific bug fixes.  I suspect if
that kernel update does fix this bug the change is probably in the wifi
or sound drivers or possibly something else in the kernel.

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/32

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On 2010-08-22T21:19:00+00:00 Christian-speckner wrote:

I'd like to chime in here: I am on a Thinkpad T60 (core duo -> 32 bit)
with a radeon X1300 and switched to KMS + gallium recently and, while
everything is working remarkably nice and stable in general (big kudos
to the developers), I've got some negative side effects which look like
the IRQ issues observed by the others in this thread to me. Symptoms
are:

1) SATA is being reconfigured and even reset from time to time. This can
be reproduced reliably by switiching VTs which causes

ata1.00: configured for UDMA/133
ata1: EH complete

to appear in dmesg most of the time. Under heavy GPU load, the link will
be reset from time to time:

ata1: hard resetting link
ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
ata1.00: ACPI cmd ef/02:00:00:00:00:a0 (SET FEATURES) succeeded
ata1.00: ACPI cmd f5/00:00:00:00:00:a0 (SECURITY FREEZE LOCK) filtered out
ata1.00: ACPI cmd ef/10:03:00:00:00:a0 (SET FEATURES) filtered out
ata1.00: ACPI cmd ef/02:00:00:00:00:a0 (SET FEATURES) succeeded
ata1.00: ACPI cmd f5/00:00:00:00:00:a0 (SECURITY FREEZE LOCK) filtered out
ata1.00: ACPI cmd ef/10:03:00:00:00:a0 (SET FEATURES) filtered out
ata1.00: configured for UDMA/133
ata1.00: configured for UDMA/133
ata1: EH complete

Very occasionally, the controller will lock for some seconds before the
reset occurs.

2) Under heavy GPU load, sound (intel HDA) has a tendency to crackle. I
am not using a sound daemon, just plain alsa. The "snd-hda-intel timing
workaround activated, blablabla..." message appears in dmesg.

3) I get NMIs from time to time (however, I don't see how those might be
related):

Uhhuh. NMI received for unknown reason b1 on CPU 0.

I am running gentoo (mostly stable) with kernel 2.6.35 (gentoo
patchset), xf86-video-ati 6.13.1, mesa bleeding-edge git (master), xorg
1.7.7 and libdrm git (master again). I've been trying different versions
of everything (including vanilla 2.6.36-rc1) as well as different
preemtion settings without any effect on those symptoms. As I never had
such issues before switching to KMS, I stronly suspect KMS to be the
culprit (however, SATA reconfiguration messages _have_ appeared before
from time to time, so it might be that KMS is aggrevating a timing
glitch already present in the hardware). To me, this looks somewhat like
interrupts being masked overly long somewhere in the KMS code.

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/33

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On 2010-08-22T21:23:45+00:00 Christian-speckner wrote:

I might add that disabling MSI has no effect for me either.

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/34

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On 2010-08-22T21:26:33+00:00 Christian-speckner wrote:

Also adding lspci

00:00.0 Host bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express Memory Controller Hub (rev 03)
00:01.0 PCI bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express PCI Express Root Port (rev 03)
00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 02)
00:1c.0 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 1 (rev 02)
00:1c.1 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 2 (rev 02)
00:1c.2 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 3 (rev 02)
00:1c.3 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 4 (rev 02)
00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #1 (rev 02)
00:1d.1 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #2 (rev 02)
00:1d.2 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #3 (rev 02)
00:1d.3 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #4 (rev 02)
00:1d.7 USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI Controller (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2)
00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge (rev 02)
00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 02)
00:1f.2 SATA controller: Intel Corporation 82801GBM/GHM (ICH7 Family) SATA AHCI Controller (rev 02)
00:1f.3 SMBus: Intel Corporation 82801G (ICH7 Family) SMBus Controller (rev 02)
01:00.0 VGA compatible controller: ATI Technologies Inc M52 [Mobility Radeon X1300]
02:00.0 Ethernet controller: Intel Corporation 82573L Gigabit Ethernet Controller
03:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection (rev 02)
15:00.0 CardBus bridge: Texas Instruments PCI1510 PC card Cardbus Controller

and /proc/interrupts

           CPU0       CPU1       
  0:     876624        195   IO-APIC-edge      timer
  1:       9878          4   IO-APIC-edge      i8042
  3:          2          0   IO-APIC-edge    
  9:       4703          0   IO-APIC-fasteoi   acpi
 12:     550556          0   IO-APIC-edge      i8042
 16:          1          0   IO-APIC-fasteoi   yenta, uhci_hcd:usb2
 17:          0          0   IO-APIC-fasteoi   uhci_hcd:usb3
 18:          0          0   IO-APIC-fasteoi   uhci_hcd:usb4
 19:          0          0   IO-APIC-fasteoi   ehci_hcd:usb1, uhci_hcd:usb5
 45:      24014          1   PCI-MSI-edge      ahci
 46:       1644          1   PCI-MSI-edge      eth0
 47:      66832          6   PCI-MSI-edge      iwl3945
 48:        138          0   PCI-MSI-edge      hda_intel
 49:     104672          0   PCI-MSI-edge      radeon
NMI:          1          0   Non-maskable interrupts
LOC:      88899     357836   Local timer interrupts
SPU:          0          0   Spurious interrupts
PMI:          0          0   Performance monitoring interrupts
PND:          0          0   Performance pending work
RES:     258412     350544   Rescheduling interrupts
CAL:         19         24   Function call interrupts
TLB:       1029       1485   TLB shootdowns
TRM:          0          0   Thermal event interrupts
THR:          0          0   Threshold APIC interrupts
MCE:          0          0   Machine check exceptions
MCP:         12         12   Machine check polls
ERR:          1
MIS:          0

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/35

------------------------------------------------------------------------
On 2011-05-06T15:14:42+00:00 Jantaegert wrote:

Hi, what is the state of this bug?

I'm using the same hardware like Jason does (Thinkpad T60 with Radeon X1400 and Intel wireless) and running Ubuntu 11.04. Kernel Version is 2.6.38 and the problems with audio glitches and wireless drops are still there. From time to time the system isn't going to hibernate or doesn't wake up after.
All this problems are gone without kms (radeon.modeset=0).

But now the Problem has gotten even worse as without kms the radeon
driver only works with software rendering and the unity desktop won't
load. Same with gnome 3 running Debian unstable/experimental.

If I can anything contribute to solve this bug, please let me know!
Reading all the comments bisecting the kernel appears the most promising way to me. Anyone who wants to explain me how to do that?

Thanks.

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/36

------------------------------------------------------------------------
On 2011-05-06T15:32:42+00:00 Michel-daenzer wrote:

(In reply to comment #36)
> Hi, what is the state of this bug?

It's weird, and nobody's had any good ideas what could cause it.


> But now the Problem has gotten even worse as without kms the radeon driver only
> works with software rendering and the unity desktop won't load. Same with gnome
> 3 running Debian unstable/experimental.

That's probably an installation / configuration problem (e.g. firmware
not available where the radeon kernel driver initializes) and not
directly related to this bug.

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/37

------------------------------------------------------------------------
On 2011-05-06T19:13:02+00:00 JasonPorter wrote:

An update, since I posted the original bug report... I'm now running
Ubuntu 11.04, and still having the same problems that everyone else is
experiencing.

I'm running the full xorg-edgers PPA, so I am running radeon
6.14.99+git20110504 and mesa 7.11.0+git20110504, with the latest
standard Natty kernel (64-bit).

I'm in a quandry, because without kms I can't run Unity (which no-one
seems to be able to explain), and with kms I get glitchy audio and wifi
dropouts.

Please help, devs!

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/38

------------------------------------------------------------------------
On 2011-05-09T23:36:06+00:00 Fabi wrote:

Its not a fix, but a little workaround.
open terminal
xrandr
look whats your minimum resolution and tha name of the screen/output
now edit the grub linux line with video=[OUTPUTNAME]-1:[MINIMALRES]
for me its:
video=LVDS-1:320x200
now reboot. KMS/VT will now have a res of 320x200, plymouth and X are normal. sound crickeling is gone (or I just can not notice it anymore)

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/39

------------------------------------------------------------------------
On 2011-05-11T20:27:56+00:00 Christian-speckner wrote:

Taking opportunity of the fact that this ticket is coming back to life:
this issue has still been accompanying over all mesa, X, ddx driver and
kernel updates. I'm on 2.6.38 now, and sound is still stuttering.

> Its not a fix, but a little workaround.
> open terminal
> xrandr
> look whats your minimum resolution and tha name of the screen/output
> now edit the grub linux line with video=[OUTPUTNAME]-1:[MINIMALRES]
> for me its:
> video=LVDS-1:320x200
> now reboot. KMS/VT will now have a res of 320x200, plymouth and X are normal.
> sound crickeling is gone (or I just can not notice it anymore)

I can confirm that this works for me too; I set the VT framebuffer to
640x480, and the crackling is much better. In addition, my desktop feels
significantly faster (I'm using KDE 4.6 with kwin compositing) --- in
particular, switching desktops with many open, complex windows like
firefox sitting is considerably better now.

To the developers (and don't hesitate to beat me down if this is
completely out of question): could it be that the issue is caused by too
many transfers from system to video memory and the driver blocking
interrupts while waiting for them to complete? As I suppose that
changing the framebuffer resolution affects the VRAM layout, the impact
of the above trick could be explained this way. This could also explain
the fact this issue seems to predominantly affect users of laptops which
have hardware relatively low on VRAM (64MB for my x1300 mobility).
Speaking of which: the driver reports the following about my hardware:

radeon 0000:01:00.0: VRAM: 128M 0x0000000000000000 - 0x0000000007FFFFFF (64M used)
radeon 0000:01:00.0: GTT: 512M 0x0000000008000000 - 0x0000000027FFFFFF
[drm] Supports vblank timestamp caching Rev 1 (10.10.2010).
[drm] Driver supports precise vblank timestamp query.
radeon 0000:01:00.0: irq 49 for MSI/MSI-X
radeon 0000:01:00.0: radeon: using MSI.
[drm] radeon: irq initialized.
[drm] Detected VRAM RAM=128M, BAR=128M
[drm] RAM width 64bits DDR
[TTM] Zone  kernel: Available graphics memory: 440368 kiB.
[TTM] Zone highmem: Available graphics memory: 1295860 kiB.

I never gave it much thought, but thinking about it, this seems
suspicious to me as I am pretty sure that this device has only 64MB of
VRAM.

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/40

------------------------------------------------------------------------
On 2011-05-11T21:29:01+00:00 agd5f wrote:

(In reply to comment #40)
> 
> radeon 0000:01:00.0: VRAM: 128M 0x0000000000000000 - 0x0000000007FFFFFF (64M
> used)
> radeon 0000:01:00.0: GTT: 512M 0x0000000008000000 - 0x0000000027FFFFFF
> [drm] Supports vblank timestamp caching Rev 1 (10.10.2010).
> [drm] Driver supports precise vblank timestamp query.
> radeon 0000:01:00.0: irq 49 for MSI/MSI-X
> radeon 0000:01:00.0: radeon: using MSI.
> [drm] radeon: irq initialized.
> [drm] Detected VRAM RAM=128M, BAR=128M
> [drm] RAM width 64bits DDR
> [TTM] Zone  kernel: Available graphics memory: 440368 kiB.
> [TTM] Zone highmem: Available graphics memory: 1295860 kiB.
> 
> I never gave it much thought, but thinking about it, this seems suspicious to
> me as I am pretty sure that this device has only 64MB of VRAM.

Your device does have 64 MB of vram.  The pci aperture is 128 MB, but
there is only 64 MB of vram.  That's why is says "64M used".

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/41

------------------------------------------------------------------------
On 2011-05-12T03:09:06+00:00 JasonPorter wrote:

(In reply to comment #40)
> I never gave it much thought, but thinking about it, this seems suspicious to
> me as I am pretty sure that this device has only 64MB of VRAM.

I'm using an X1400 here, with 128MB of vram. I'm not sure if that is
helpful or not.

Here's some extra info for the fire, and one that surprised me when I
discovered it yesterday: there are a few apps that render fullscreen
video that do not exhibit the stuttering at all. This is new behavior,
previously ANY video would cause the stuttering when fullscreened.  This
change that I'm seeing may not be the same on your systems, but it's
worth testing.

A good example is the Hulu Desktop for Linux application, which streams
high quality video fullscreen without any stutter.  This uses the video
card, the wifi connection, and the sound card at the same time, which is
exactly the situation that causes problems for most people.  The app
specifies that it requires Flash 10.0.32 or higher, which suggests that
it uses Flash for the video transport in some fashion.  The application
can be downloaded from http://www.hulu.com/labs/hulu-desktop-linux

Also, on my system, switching into HTML5 video mode on Youtube (using
Google Chrome) allows fullscreen 720p streaming without audio stutter.
The same video played in standard Flash video mode (in Chrome or in
Firefox) stutters heavily when maximized, in both 480p and 720p formats.
In fact, any Flash-based web-embedded video stutters when maximized, on
any site that I've tried (Vimeo, CBS, etc), including even Hulu's own
web-based player.

I'm not sure what the story is on this, it's confusing. Maybe on my
particular hardware the radeon driver is able to cope differently with
the particular video rendering method used by Hulu Desktop and the
browser HTML5 video implementations. If the Hulu Desktop application is
using Flash, it's doing it differently than viewing the same video on
Hulu.com in a browser, because the web-embedded player stutters and the
Hulu Desktop application doesn't, and both are (theoretically) streaming
from the same source.

I'm running very current versions of Mesa, Gallium and the radeon
driver, so the particular combination of behaviors that I'm seeing may
be a recent change. I also have a relatively fast system (Core 2 Duo
with an SSD) and as always, system load seems to have a big impact on
this issue appearing or not.  So your results may not be the same as
mine.

possibly relevant information from glxinfo:
  direct rendering: Yes
  OpenGL vendor string: X.Org R300 Project
  OpenGL renderer string: Gallium 0.4 on ATI RV515
  OpenGL version string: 2.1 Mesa 7.11-devel

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/42

------------------------------------------------------------------------
On 2011-05-30T11:42:56+00:00 Denk wrote:

Anything new on this?
I've got a Thinkpad T60 with Radeon X1400, IWL3945 and Intel HDA (AD198x) with Linux 2.6.39, mesa 7.11-devel, xserver 1.10.1-devel, xf86-video-ati 6.14.1-devel and suffer from the already mentioned stuttering/choopy audio and frequent iwlwifi-crashes, too!

Regards
denk

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/43

------------------------------------------------------------------------
On 2011-06-14T09:18:19+00:00 Jantaegert wrote:

Created attachment 47928
Kernel log while loading the radeon driver

With kernel 2.6.39 I get the NMI message (see attachment) on every boot
while the radeon driver is loaded. With earlier versions this happened
only while i switched the console.

Maybe it would help to investigate the module loading?
If anyone can tell me how to do that, i can submit more detailled informations.

Thanks,
jan.

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/44

------------------------------------------------------------------------
On 2011-06-15T16:44:08+00:00 maciek wrote:

(In reply to comment #44)
> Created an attachment (id=47928) [details]
> Kernel log while loading the radeon driver
> 
> With kernel 2.6.39 I get the NMI message (see attachment) on every boot while
> the radeon driver is loaded. With earlier versions this happened only while i
> switched the console.
> 
> Maybe it would help to investigate the module loading?
> If anyone can tell me how to do that, i can submit more detailled informations.
> 
> Thanks,
> jan.

This  might shed some light: 
http://mailman.linux-thinkpad.org/pipermail/linux-thinkpad/2011-February/049418.html

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/45

------------------------------------------------------------------------
On 2011-06-15T16:48:04+00:00 maciek wrote:

Created attachment 48007
dmesg from Ubuntu 11.04 - unaffected

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/46

------------------------------------------------------------------------
On 2011-06-15T16:48:43+00:00 maciek wrote:

Created attachment 48008
dmesg from Fedora 15 - affected

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/47

------------------------------------------------------------------------
On 2011-06-15T16:53:55+00:00 maciek wrote:

I've added dmesg output from Ubuntu 11.04 which is not affected with the bug (at least on my laptop - Thinkpad T60, 2623P2U, X1300) and Fedora 15 which does have the problem. Unless I missed something, the only relevant difference is DRM version reported, which is 2.8 for Ubuntu and 2.10 for Fedora (how come that's possible is another question).
So far, the following does not help:
- disp_priority=1
- agpmode=1
- gartsize=64
- dynclks=0

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/48

------------------------------------------------------------------------
On 2011-06-15T18:32:13+00:00 Jantaegert wrote:

(In reply to comment #45)

Dynamic Powermanagement is disabled here (powermanagement profile is
fixed to "default", what means, that all pcie lines stay allways
enabled).

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/49

------------------------------------------------------------------------
On 2011-07-13T20:56:49+00:00 maciek wrote:

I played a bit with power_profile settings and it turns our that whenever profile is set to high, mid, sound stuttering is pronounced. Yet, once set to low, stuttering is gone (or unnoticeable).
If anyone wants to try (adjust path to suit your hardware):
echo low >  /sys/class/drm/card0/device/power_profile
Then the actual frequency can be verified by:
cat /sys/kernel/debug/dri/0/radeon_pm_info

Also dynpm power_method does not really work, there was another bug
report recenty that the frequency is never lowered if dynpm is used.

Additionally, given the recent fuss about pcie_aspm=force (and possible
effect on PCIe), sound stuttering is present regardless of the setting.

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/50

------------------------------------------------------------------------
On 2011-07-13T22:02:50+00:00 Øyvind Stegard wrote:

(In reply to comment #50)
> I played a bit with power_profile settings and it turns our that whenever
> profile is set to high, mid, sound stuttering is pronounced. Yet, once set to
> low, stuttering is gone (or unnoticeable).
> If anyone wants to try (adjust path to suit your hardware):
> echo low >  /sys/class/drm/card0/device/power_profile
> Then the actual frequency can be verified by:
> cat /sys/kernel/debug/dri/0/radeon_pm_info

Confirming this on ATI X1400 mobile, Ubuntu 11.04 x86. When using the
"low" power profile, audio stuttering/crackling is much less prevalent
(or maybe not even noticable) in Youtube fullscreen vids. Using the
"high" setting results in definite audio crackling when switching to
fullscreen. This is with the very latest Flashplayer 11 beta for Linux
released today.

On my card, low setting results in:
# cat /sys/kernel/debug/dri/0/radeon_pm_info
default engine clock: 392000 kHz
current engine clock: 128250 kHz
default memory clock: 350000 kHz
current memory clock: 135000 kHz
PCIE lanes: 1

High setting gives:
# cat /sys/kernel/debug/dri/0/radeon_pm_info
default engine clock: 392000 kHz
current engine clock: 391500 kHz
default memory clock: 350000 kHz
current memory clock: 342000 kHz
PCIE lanes: 0

There's a difference not only in board frequencies, but also the PCIE
lanes number (0 means full throttle, or is "more performant" than 1 I
guess ??).

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/51

------------------------------------------------------------------------
On 2011-07-14T18:48:21+00:00 maciek wrote:

(In reply to comment #51)
> There's a difference not only in board frequencies, but also the PCIE lanes
> number (0 means full throttle, or is "more performant" than 1 I guess ??).

The PCIe lanes information seems to be read from the card itself (at least that's for RV515), look here:
http://lxr.linux.no/#linux+v2.6.39/drivers/gpu/drm/radeon/r300.c#L553
While 1 is understandable (PCIe x1), 0 value is confusing and I can't tell if that'x x16 or not. Maybe one of the driver authorsa can provide some input.

I've failed to locate any docs that contain information on the registers
exposed on the PCI.

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/52

------------------------------------------------------------------------
On 2011-07-18T17:07:10+00:00 agd5f wrote:

Does adding noapic to the kernel commandline in grub help?  See the last
few comments in bug 37679.

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/53

------------------------------------------------------------------------
On 2011-07-19T08:27:20+00:00 maciek wrote:

(In reply to comment #53)
> Does adding noapic to the kernel commandline in grub help?  See the last few
> comments in bug 37679.
No, it seems to have no effect on the problem, at least on my setup.

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/54

------------------------------------------------------------------------
On 2011-09-21T19:48:45+00:00 Richtigfalsch wrote:

I'd like the importance of this bug being corrected to 'major' because
disabling KMS in fact means a major loss of functionality. I'm now on
kernel 2.6.40 and sadly this heavy bug still is there.

I skipped form Windows to Linux, mainly because the ATI Driver for the
x1400 in my Thinkpad T60 (with iwl3945 od course) is crap.Now having
tried many different distributions and kernels, i can confirm the bug
still is there, and is making the notebook unusable. There's no 3D
acceleration available at all on this GPU with KMS disabled. When
playing a flash video it needs about 30 seconds fpr reaction if I clock
some control with the mouse. Compiz or DirectX in Wine aren't working at
all, and make the display crash. The GPU is wasting much energy and the
notebook is running very hot, and overall just sluggish and not
enjoyable in any fashion, I'd rather use my old Pentium M notebook, if
it wasn't defective.

Please consider creating a solution fot this problem, as there's no
single alternative for many Notebook owners, of expecially good
notebooks (Thinkpad, Dell and more).

Problems with KMS enabled remain as before:
-iwl3945 WLAN gets slower and slower, until disconnect.
-heavy video (especially fullscreen) make the sound stutter in a fashion that makes it impossible to understand spoken word

Thanks,

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/55

------------------------------------------------------------------------
On 2011-10-14T09:01:16+00:00 Øyvind Stegard wrote:

Seems worse than ever on Ubuntu 11.10 just released (kernel 3.0, libdrm
2.4.26, xserver 1.10.4, using the new Unity-interface-thing). Just
moving the mouse pointer is enough to disturb audio now, apparently. And
moving windows around turns audio into bubbling porridge.

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/56

------------------------------------------------------------------------
On 2011-10-14T10:45:16+00:00 Øyvind Stegard wrote:

Unity is sluggish on the X1400. Guess it's too old to cope now, with the
latest desktop tech. Anyways, audio interruption is more or less
constant after a while. Don't even need to move anything. Got these:

[  931.698537] CE: hpet increased min_delta_ns to 515452 nsec
[ 1019.733804] CE: hpet increased min_delta_ns to 773178 nsec
[ 1023.203405] hrtimer: interrupt took 7398146 ns
[ 1171.028962] CE: hpet increased min_delta_ns to 1159767 nsec

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/57

------------------------------------------------------------------------
On 2011-10-14T10:55:10+00:00 maciek wrote:

(In reply to comment #57)
> Unity is sluggish on the X1400. Guess it's too old to cope now, with the latest
> desktop tech.
Not really. Worked great with UMS. Compiz with way more advanced effects than fade in/out was smooth, same for ioquake running at decent framerate.

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/58

------------------------------------------------------------------------
On 2011-11-04T14:40:15+00:00 Tom Morton wrote:

I get this on my Thinkpad T60, Radeon X1300 running debian sid.

As well as crackle on the internal intel audio, I get even worse crackle
and popping when using my Logitech V20 USB speakers.

The only thing that resolves the problem for me is:

echo mid > /sys/class/drm/card0/device/power_profile

But then gnome-shell and all 3d apps are really slow.

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/66

------------------------------------------------------------------------
On 2011-11-24T13:27:56+00:00 Steffen-schloenvoigt wrote:

Same problem on openSUSE 12.1 with lenovo T60, Radeon Mobility X1400

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/75

------------------------------------------------------------------------
On 2011-11-24T13:45:15+00:00 stevenb wrote:

Hi

Jan Kouba put me on track to this bug-page. I don't know if "official"
developers use this channel as a information or judgment source of bugs.
As far as I know Ubuntu works on launchpad to administrate bugs.

For this problem I created https://bugs.launchpad.net/ubuntu/+bug/879790
in order to make Ubuntu know that problem. It may be an idea to "make
some noise" there in form of clicking on the button "This bug
affects...". And - if you feel like - to reproduce some of your
statements from this bug-report-page. Hopefully they will take notice
finally.

keep fingers crossed
Quesst

Reply at: https://bugs.launchpad.net/nouveau/+bug/877789/comments/76


** Changed in: nouveau
       Status: Unknown => Confirmed

** Changed in: nouveau
   Importance: Unknown => High

** Bug watch added: Linux Kernel Bug Tracker #15912
   http://bugzilla.kernel.org/show_bug.cgi?id=15912

-- 
You received this bug notification because you are a member of Ubuntu-X,
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Title:
  Choppy Audio After Upgrade To 11.10

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