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[Bug 1430883] Re: continuously receive the message [drm:radeon_acpi_init] "ERROR" Cannot find a backlight controller

 

after loading appeared 2 errors

"System program problem detected

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and

[    7.473000] EXT4-fs (sda2): re-mounted. Opts: errors=remount-ro
[    9.711091] rt3290sta: module verification failed: signature and/or required key missing - tainting kernel
[   11.457278] init: failsafe main process (593) killed by TERM signal
[   16.278559] /var/lib/dkms/rt3290sta/2.6.0.0/build/src/os/linux/../../common/cmm_asic.c:2608 assert KeyIdx < 4failed
[   16.278563] /var/lib/dkms/rt3290sta/2.6.0.0/build/src/os/linux/../../common/cmm_asic.c:2608 assert KeyIdx < 4failed
[   19.152514] radeon 0000:01:00.0: Direct firmware load for radeon/hainan_pfp.bin failed with error -2
[   19.200504] radeon 0000:01:00.0: Direct firmware load for radeon/hainan_me.bin failed with error -2
[   19.268603] radeon 0000:01:00.0: Direct firmware load for radeon/hainan_ce.bin failed with error -2
[   19.279634] radeon 0000:01:00.0: Direct firmware load for radeon/hainan_rlc.bin failed with error -2
[   19.361224] radeon 0000:01:00.0: Direct firmware load for radeon/hainan_mc.bin failed with error -2
[   19.431970] radeon 0000:01:00.0: Direct firmware load for radeon/hainan_smc.bin failed with error -2
[   20.340623] [drm:radeon_acpi_init [radeon]] *ERROR* Cannot find a backlight controller

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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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