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Message #85005
[Bug 1393085] Re: Performance degraded and video glitches with i915 after upgrade to utopic
luca, could you please test the latest upstream kernel available from
the very top line at the top of the page (the release names are
irrelevant for testing, and please do not test the daily folder)
following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow
additional upstream developers to examine the issue.
If the test did not allow you to test to the issue (ex. you couldn't boot into the OS) please make a comment in your report about this, and continue to test the next most recent kernel version until you can test to the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER
where VERSION-NUMBER is the version number of the kernel you tested exactly shown as:
kernel-fixed-upstream-3.18-rc6
This can be done by clicking on the yellow circle with a black pencil
icon next to the word Tags located at the bottom of the bug description.
If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER
Once testing of the upstream kernel is complete, please mark this bug's
Status as Confirmed. Please let us know your results. Thank you for your
understanding.
** Package changed: xserver-xorg-video-intel (Ubuntu) => linux (Ubuntu)
** Changed in: linux (Ubuntu)
Importance: Medium => Low
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https://bugs.launchpad.net/bugs/1393085
Title:
Performance degraded and video glitches with i915 after upgrade to
utopic
Status in linux package in Ubuntu:
Incomplete
Bug description:
After upgrading from trusty to utopic, I noticed a performance degradation in the video performance. In particular the flash plugin video (like youtube) starts OK but it degrades after a couple of seconds when in full screen, looking as if it was doing something like 10~15 fps with videos that worked fine before. When switching to windowed more again, the video goes more smoothly but the seek bar blinks and other parts of the video present some glitches. Also when switching from X to a console, via Ctrl-Alt-F1 for example, it takes like 2 seconds to get the console, and I see the below message in the console. When switching back to X is fast as usual, but when switching back to the console, again 2 seconds delay and the message:
[ 184.436477] [drm:intel_enable_lvds] *ERROR* timed out waiting for panel to power on
Other weird looking messages are found in dmesg:
[ 4.673834] [drm] GMBUS [i915 gmbus panel] timed out, falling back to bit banging on pin 3
[...]
[ 4.732400] [drm] Wrong MCH_SSKPD value: 0x16040307
[ 4.732404] [drm] This can cause pipe underruns and display issues.
[ 4.732406] [drm] Please upgrade your BIOS to fix this.
WORKAROUND: Change intel_pscale cpufreq driver setting to performance
from powersave.
ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: xorg 1:7.7+7ubuntu2
ProcVersionSignature: Ubuntu 3.16.0-25.33-generic 3.16.7
Uname: Linux 3.16.0-25-generic x86_64
.tmp.unity.support.test.0:
ApportVersion: 2.14.7-0ubuntu8
Architecture: amd64
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,workarounds,scale,expo,ezoom]
CompositorRunning: None
CurrentDesktop: Unity
Date: Sat Nov 15 22:52:27 2014
DistUpgraded: 2014-11-08 12:14:07,528 DEBUG enabling apt cron job
DistroCodename: utopic
DistroVariant: ubuntu
DkmsStatus: virtualbox, 4.3.18, 3.16.0-25-generic, x86_64: installed
ExtraDebuggingInterest: Yes
GraphicsCard:
Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller])
Subsystem: Toshiba America Info Systems Device [1179:0009]
InstallationDate: Installed on 2012-04-26 (933 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
MachineType: TOSHIBA SATELLITE Z830
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-25-generic root=UUID=36929bf3-a158-44d9-a80d-3adac2840fa8 ro quiet splash acpi_backlight=vendor pcie_aspm=force i915.enable_rc6=7 i915.enable_fbc=1 i915.lvds_downclock=1 vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to utopic on 2014-11-08 (7 days ago)
dmi.bios.date: 04/18/2013
dmi.bios.vendor: TOSHIBA
dmi.bios.version: Version 1.80
dmi.board.asset.tag: 0000000000
dmi.board.name: Portable PC
dmi.board.vendor: TOSHIBA
dmi.board.version: Version A0
dmi.chassis.asset.tag: 0000000000
dmi.chassis.type: 10
dmi.chassis.vendor: TOSHIBA
dmi.chassis.version: Version 1.0
dmi.modalias: dmi:bvnTOSHIBA:bvrVersion1.80:bd04/18/2013:svnTOSHIBA:pnSATELLITEZ830:pvrPT22LE-00300GGR:rvnTOSHIBA:rnPortablePC:rvrVersionA0:cvnTOSHIBA:ct10:cvrVersion1.0:
dmi.product.name: SATELLITE Z830
dmi.product.version: PT22LE-00300GGR
dmi.sys.vendor: TOSHIBA
version.compiz: compiz 1:0.9.12+14.10.20140918-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.56-1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.3.0-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.3.0-0ubuntu3
version.xserver-xorg-core: xserver-xorg-core 2:1.16.0-1ubuntu1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.4.0-2ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.914-1~exp1ubuntu4.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2
xserver.bootTime: Sat Nov 15 22:40:14 2014
xserver.configfile: default
xserver.errors:
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
xserver.version: 2:1.16.0-1ubuntu1
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References