kernel-packages team mailing list archive

["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

Gregory Lardiere, thank you for reporting this and helping make Ubuntu better. Could you please test the latest upstream kernel available from the very top line at the top of the page (not the daily folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER

where VERSION-NUMBER is the version number of the kernel you tested exactly shown as:
kernel-fixed-upstream-3.17-rc3

This can be done by clicking on the yellow circle with a black pencil
icon next to the word Tags located at the bottom of the bug description.

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER

Once testing of the upstream kernel is complete, please mark this bug's
Status as Confirmed. Please let us know your results. Thank you for your
understanding.

** Tags added: latest-bios-1.15

** Tags added: bisect-done

** Tags added: regression-update

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

** Changed in: linux (Ubuntu)
       Status: Confirmed => Incomplete

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1364148

Title:
  Backlight turned off since upgrade to 3.13.0-35

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  Since the upgrade to kernel 3.13.0-35 (from 3.13.0-34), the screen is very dark to the point it's unusable.
  Backlight seems completely turned off. Using the brightness keys doesn't help.
  It was working fine with 3.13.0-34.
  I found that the offending patch is "drm/radeon: set default bl level to something reasonable".
  I reverted this patch and recompiled 3.13.0-35, and it solved the problem.
  --- 
  ApportVersion: 2.14.1-0ubuntu3.3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC2:  greg       1962 F.... pulseaudio
   /dev/snd/pcmC2D0p:   greg       1962 F...m pulseaudio
   /dev/snd/controlC1:  greg       1962 F.... pulseaudio
   /dev/snd/controlC0:  greg       1962 F.... pulseaudio
  CurrentDesktop: KDE
  DistroRelease: Ubuntu 14.04
  HibernationDevice: RESUME=UUID=fa1d286a-7f50-4e1f-ae6c-9d48161e6c2d
  InstallationDate: Installed on 2010-07-03 (1521 days ago)
  InstallationMedia: Kubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100427)
  MachineType: FUJITSU SIEMENS AMILO Xi 2550
  Package: linux (not installed)
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-35-generic root=UUID=7b8ed785-f136-4231-b6bd-5e175a9aef0b ro processor.max_cstate=1 radeon.dpm=1 quiet splash crashkernel=384M-:128M vt.handoff=7
  ProcVersionSignature: Ubuntu 3.13.0-35.62-generic 3.13.11.6
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-35-generic N/A
   linux-backports-modules-3.13.0-35-generic  N/A
   linux-firmware                             1.127.5
  Tags:  trusty
  Uname: Linux 3.13.0-35-generic x86_64
  UpgradeStatus: Upgraded to trusty on 2014-05-08 (116 days ago)
  UserGroups: adm admin bluetooth cdrom dialout lpadmin plugdev sambashare vboxusers wireshark
  _MarkForUpload: True
  dmi.bios.date: 09/30/2008
  dmi.bios.vendor: Phoenix
  dmi.bios.version: 1.15
  dmi.board.name: F44
  dmi.board.vendor: FUJITSU SIEMENS
  dmi.board.version: 00030D005503B103
  dmi.chassis.type: 10
  dmi.chassis.vendor: FUJITSU SIEMENS
  dmi.modalias: dmi:bvnPhoenix:bvr1.15:bd09/30/2008:svnFUJITSUSIEMENS:pnAMILOXi2550:pvr:rvnFUJITSUSIEMENS:rnF44:rvr00030D005503B103:cvnFUJITSUSIEMENS:ct10:cvr:
  dmi.product.name: AMILO Xi 2550
  dmi.sys.vendor: FUJITSU SIEMENS

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1364148/+subscriptions