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

[LanSilot]

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

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-32-generic 3.13.0-32.57
ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
Uname: Linux 3.13.0-32-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: lansilot 2692 F.... pulseaudio
 /dev/snd/controlC0: lansilot 2692 F.... pulseaudio
CurrentDesktop: Unity
CurrentDmesg:
 [ 23.690772] vgaarb: device changed decodes: PCI:0000:00:01.0,olddecodes=io+mem,decodes=none:owns=none
 [ 25.111435] init: plymouth-upstart-bridge main process ended, respawning
 [ 25.130730] init: plymouth-upstart-bridge main process ended, respawning
 [ 29.990447] [drm] Disabling audio 0 support
 [ 30.215814] pciehp 0000:00:02.0:pcie04: Card not present on Slot(0)
Date: Fri Jul 18 18:53:35 2014
HibernationDevice: RESUME=UUID=354b89f7-d237-403d-8942-f78edbd6da2a
InstallationDate: Installed on 2014-07-15 (2 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
MachineType: Hewlett-Packard HP ProBook 4545s
ProcFB:
 0 radeondrmfb
 1 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-32-generic root=UUID=803c4bdd-2ebb-41eb-bd69-b2f8749e53e2 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.13.0-32-generic N/A
 linux-backports-modules-3.13.0-32-generic N/A
 linux-firmware 1.127.4
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: yes
  Hard blocked: no
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/07/2013
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 68CPD Ver. F.44
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 17ED
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 54.20
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr68CPDVer.F.44:bd10/07/2013:svnHewlett-Packard:pnHPProBook4545s:pvrA1018C1100:rvnHewlett-Packard:rn17ED:rvrKBCVersion54.20:cvnHewlett-Packard:ct10:cvr:
dmi.product.name: HP ProBook 4545s
dmi.product.version: A1018C1100
dmi.sys.vendor: Hewlett-Packard

[Brad Figg (brad-figg)]

This change was made by a bot.

[penalvch (penalvch)]

LanSilot, could you please comment to any actual problem with adjusting the backlight?

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]