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[Diamondaz+fdb <1319589@xxxxxxxxxxxxxxxxxx>]

It seems that the timeout is too small. A dirty fix replacing
rdev->usec_timeout with 1000000 in rv770_send_msg_to_smc
(drivers/gpu/drm/radeon/rv770_smc.c) works for me (both *ERROR*s in
kernel log disappear, performance returns to normal).

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https://bugs.launchpad.net/bugs/1319589

Title:
  [drm:rv770_dpm_set_power_state] *ERROR* rv770_set_sw_state failed

Status in DRI:
  Confirmed
Status in linux package in Ubuntu:
  Expired

Bug description:
  Hello,
  On Ubuntu 14.04 LTS, when the computer starts (before the splash screen appears), I see this error in the console:

  [drm:rv770_dpm_set_power_state] *ERROR* rv770_set_sw_state failed

  I don't know what does exactly this bug, but I supposed that it's not
  normal.

  
  OS: Linux
  Type: amd64
  Distribution: Ubuntu 14.04 LTS
  GPU: ATI Mobility Radeon HD 4570
  → 02:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RV710/M92 [Mobility Radeon HD 4530/4570/545v]

  Kernel: 3.13.0-24-generic #47-Ubuntu SMP Fri May 2 23:30:00 UTC 2014
  x86_64 x86_64 x86_64 GNU/Linux

  I use the free driver for Linux, ATI doesn't support this GPU with
  proprietary drivers today... but without this little bug, the free
  drivers are very good :)

  
  Message appears at [   17.026313]
  (See dmesg file)

  Thank you.
  --- 
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  valentin   4277 F.... pulseaudio
   /dev/snd/controlC0:  valentin   4277 F.... pulseaudio
  CurrentDesktop: Unity
  DistroRelease: Ubuntu 14.04
  HibernationDevice: RESUME=UUID=2fe681c2-5497-453b-bc19-4401ca76baaf
  InstallationDate: Installed on 2014-05-06 (8 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Beta amd64 (20140326)
  MachineType: Acer Aspire 5542
  Package: linux (not installed)
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=20964cff-7885-4482-8618-d60d52c7d229 ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-24-generic N/A
   linux-backports-modules-3.13.0-24-generic  N/A
   linux-firmware                             1.127.2
  Tags:  trusty
  Uname: Linux 3.13.0-24-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 01/18/2010
  dmi.bios.vendor: Phoenix Technologies LTD
  dmi.bios.version: V1.09
  dmi.board.name: JV50TR
  dmi.board.vendor: Acer
  dmi.board.version: Rev
  dmi.chassis.type: 10
  dmi.chassis.vendor: Acer
  dmi.chassis.version: None
  dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrV1.09:bd01/18/2010:svnAcer:pnAspire5542:pvr0100:rvnAcer:rnJV50TR:rvrRev:cvnAcer:ct10:cvrNone:
  dmi.product.name: Aspire 5542
  dmi.product.version: 0100
  dmi.sys.vendor: Acer

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