kernel-packages team mailing list archive

[Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>]

Did this issue start happening after an update/upgrade?  Was there a
prior kernel version where you were not having this particular problem?

Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.0 kernel[0].

If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag:
'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".


Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.0-rc3-vivid/


** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

-- 
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https://bugs.launchpad.net/bugs/1430883

Title:
  continuously receive the message [drm:radeon_acpi_init] "ERROR" Cannot
  find a backlight controller

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  [   15.021664] rt3290sta: module verification failed: signature and/or  required key missing - tainting kernel
  [   16.182412] EXT4-fs (sda2): re-mounted. Opts: errors=remount-ro
  [   24.058014] [drm:radeon_acpi_init] *ERROR* Cannot find a backlight controller
  [   29.933827] init: failsafe main process (718) killed by TERM signal
  [   32.111669] /var/lib/dkms/rt3290sta/2.6.0.0/build/src/os/linux/../../common/cmm_asic.c:2608 assert KeyIdx < 4failed
  [   32.111678] /var/lib/dkms/rt3290sta/2.6.0.0/build/src/os/linux/../../common/cmm_asic.c:2608 assert KeyIdx < 4failed

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-46-generic 3.13.0-46.77
  ProcVersionSignature: Ubuntu 3.13.0-46.77-generic 3.13.11-ckt15
  Uname: Linux 3.13.0-46-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.7
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  eugene     2496 F.... pulseaudio
   /dev/snd/controlC0:  eugene     2496 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Wed Mar 11 19:02:59 2015
  HibernationDevice: RESUME=UUID=b90f8319-66ea-4e2b-8b49-1434ed1e6f6d
  InstallationDate: Installed on 2015-03-05 (6 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  MachineType: Hewlett-Packard HP Pavilion 15 Notebook PC
  ProcFB:
   0 radeondrmfb
   1 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-46-generic root=UUID=e71f0d22-9d1d-4165-a8f5-bd2ac86c28b7 ro quiet splash acpi_backlight=vendor vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-46-generic N/A
   linux-backports-modules-3.13.0-46-generic  N/A
   linux-firmware                             1.127.11
  RfKill:
   
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 06/03/2014
  dmi.bios.vendor: Insyde
  dmi.bios.version: F.15
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 216C
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 30.25
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnInsyde:bvrF.15:bd06/03/2014:svnHewlett-Packard:pnHPPavilion15NotebookPC:pvr0887100000005E00000600000:rvnHewlett-Packard:rn216C:rvr30.25:cvnHewlett-Packard:ct10:cvrChassisVersion:
  dmi.product.name: HP Pavilion 15 Notebook PC
  dmi.product.version: 0887100000005E00000600000
  dmi.sys.vendor: Hewlett-Packard

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