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[Problem]
Resume from suspend triggers a kernel oops due to the radeon kms module taking more than 10 seconds to resume

[Discussion]
When resuming from the suspend state, a popup box is displayed indicating an error has occured and "Your system might become unstable now and might need to be restarted.".  In the dmesg output, the following lines are present before the kernel oops, showing that the radeon driver took 11408.919 msecs to resume and the kernel oops is due to resume taking longer than 10 seconds total (11430 msecs).  

Interesting lines in the dmesg output when the error occurs are below
(with kernel.drm=0x04 set, adding a bit of verbosity when the radeon
driver is restoring):

[   69.792851] PM: resume of drv:scsi_disk dev:2:0:0:0 complete after 2644.379 msecs
[   70.122093] [drm:output_poll_execute], [CONNECTOR:15:VGA-1] status updated from 2 to 2
[   70.124058] [drm:radeon_atombios_connected_scratch_regs], DFP1 disconnected
[   70.124062] [drm:output_poll_execute], [CONNECTOR:17:HDMI-A-1] status updated from 2 to 2
[   71.960104] [drm:radeon_atom_encoder_dpms], encoder dpms 21 to mode 3, devices 00000001, active_devices 00000000
[   71.960113] [drm:radeon_atom_encoder_dpms], encoder dpms 30 to mode 3, devices 00000008, active_devices 00000000
[   71.960136] [drm:radeon_compute_pll_avivo], 7187, pll dividers - fb: 130.5 ref: 2, post 13
[   71.980174] [drm:drm_crtc_helper_set_mode], [ENCODER:12:LVDS-12] set [MODE:30:1366x768]
[   76.950136] [drm:avivo_crtc_load_lut], 0
[   76.950200] [drm:radeon_atom_encoder_dpms], encoder dpms 31 to mode 0, devices 00000002, active_devices 00000002
[   76.960133] [drm:radeon_atom_encoder_dpms], encoder dpms 31 to mode 3, devices 00000002, active_devices 00000002
[   78.303704] [drm:radeon_atom_encoder_dpms], encoder dpms 21 to mode 3, devices 00000001, active_devices 00000000
[   78.303713] [drm:radeon_atom_encoder_dpms], encoder dpms 30 to mode 3, devices 00000008, active_devices 00000000
[   78.303734] [drm:avivo_crtc_load_lut], 0
[   78.303790] [drm:radeon_atom_encoder_dpms], encoder dpms 31 to mode 0, devices 00000002, active_devices 00000002
[   78.310132] PM: resume of drv:radeon dev:0000:01:05.0 complete after 11408.919 msecs
[   78.310148] PM: resume of drv:drm dev:controlD64 complete after 8513.702 msecs
[   78.310173] PM: resume of devices complete after 11409.422 msecs
[   78.330262] PM: resume devices took 11.430 seconds
[   78.330265] ------------[ cut here ]------------
[   78.330272] WARNING: at /build/buildd/linux-2.6.38/kernel/power/suspend_test.c:53 suspend_test_finish+0x86/0x90()
[   78.330274] Hardware name: 1215T
[   78.330277] Component: resume devices, time: 11430

Upon investigating further, it looks like portions of the the following
workarounds were discovered that allow resume from suspend to work as
expected, by avoid the radeon driver:

[Workarounds]
1. Add "nomodeset" to the linux command line in grub
2. Use the proprietary FGLRX driver. 

[System Environment]
ASUS 1215T running a fresh install of 11.04 beta or 11.04 beta2.

[Original Report]
Hi, when I resume from a suspend on ubuntu 11.04 beta, this problem occures. I still can use my laptop without problem but seems like there is something wrong anyway.

I am sceptical about those lines in dmesg, I do not use the latest BIOS,
but asus does not mention that any firmware was updated except Embeded
Controller in version 303, I think I have BIOS v305.

 1334.660031] atl1c 0000:03:00.0: vpd r/w failed.  This is likely a firmware bug on this device.  Contact the card vendor for a firmware update.ACPI Warning: Incorrect checksum in table [OEMB] - 0x31, should be 0x1C (20110112/tbutils-314)
[ 1336.215430] ACPI Warning: Incorrect checksum in table [OEMB] - 0x31, should be 0x1C (20110112/tbutils-314)

Maybe should I try with the free wifi driver instead of Broadcom's ?? I also installed Jupiter from PPA, could this be the problem?
This problem didn't occure on Ubuntu 10.10 but I cannot say if this was only because I didn't notice, since the computer is still usable after the "crash".

ProblemType: KernelOops
DistroRelease: Ubuntu 11.04
Package: linux-image-2.6.38-8-generic 2.6.38-8.42
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
NonfreeKernelModules: wl
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Annotation: Your system might become unstable now and might need to be restarted.
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: SB [HDA ATI SB], device 0: ALC269VB Analog [ALC269VB Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  david      1596 F.... pulseaudio
 /dev/snd/seq:        timidity   1195 F.... timidity
CRDA: Error: [Errno 2] Aucun fichier ou dossier de ce type
Card0.Amixer.info:
 Card hw:0 'SB'/'HDA ATI SB at 0xfbbf4000 irq 16'
   Mixer name	: 'Realtek ALC269VB'
   Components	: 'HDA:10ec0269,1043841c,00100100'
   Controls      : 11
   Simple ctrls  : 7
Card1.Amixer.info:
 Card hw:1 'HDMI'/'HDA ATI HDMI at 0xfbd00000 irq 19'
   Mixer name	: 'ATI RS690/780 HDMI'
   Components	: 'HDA:1002791a,00791a00,00100000'
   Controls      : 4
   Simple ctrls  : 1
Card1.Amixer.values:
 Simple mixer control 'IEC958',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [on]
Date: Mon Apr 18 11:35:01 2011
Failure: oops
HibernationDevice: RESUME=UUID=5744eb3f-bc57-41a7-aab1-1e18f3a27105
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta amd64 (20110330)
MachineType: ASUSTeK Computer INC. 1215T
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic root=UUID=9c1af1ad-9e7c-463f-8720-5442141639e9 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-2.6.38-8-generic N/A
 linux-backports-modules-2.6.38-8-generic  N/A
 linux-firmware                            1.50
SourcePackage: linux
StagingDrivers: brcm80211
Title: [STAGING]
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/27/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0304
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: 1215T
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: x.xx
dmi.chassis.asset.tag: 0x00000000
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK Computer INC.
dmi.chassis.version: x.x
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0304:bd09/27/2010:svnASUSTeKComputerINC.:pn1215T:pvrx.x:rvnASUSTeKComputerINC.:rn1215T:rvrx.xx:cvnASUSTeKComputerINC.:ct10:cvrx.x:
dmi.product.name: 1215T
dmi.product.version: x.x
dmi.sys.vendor: ASUSTeK Computer INC.

** Affects: xserver-xorg-video-ati (Ubuntu)
     Importance: Undecided
         Status: Confirmed


** Tags: amd64 apport-kerneloops kernel-oops kernel-power natty needs-upstream-testing regression-release resume staging suspend
-- 
[RS880] Resume from suspend error on asus eeepc 1215T (Ubuntu 11.04 beta)
https://bugs.launchpad.net/bugs/764788
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