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[sys64738 <burkhard.meier@xxxxxx>]

Public bug reported:

Since my upgrade from Lubuntu 14.04 to 14.10, my backlight controls
(hotkeys to increase/decrease brightness) no longer work on my Dell
Inspiron Mini 10. With 14.04 and earlier versions there was no problem.

There are entries under /sys/class/backlight. I have also tried booting
with acpi_backlight=vendor. After rebooting with that option, there was
a dell entry under /sys/class/backlight, but this didn't fix the
problem.

Trying to pass brightness values to the files under /sys/class/backlight
didn't change brightness either (I believe I tried all of them).

I'll try to add the attachments recommended by
https://wiki.ubuntu.com/Kernel/Debugging/Backlight in a moment.

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: linux-image-3.16.0-24-generic 3.16.0-24.32
ProcVersionSignature: Ubuntu 3.16.0-24.32-generic 3.16.4
Uname: Linux 3.16.0-24-generic i686
ApportVersion: 2.14.7-0ubuntu8
Architecture: i386
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  rb706      1823 F.... lxpanel
CRDA: Error: [Errno 2] Datei oder Verzeichnis nicht gefunden: 'iw'
CurrentDesktop: LXDE
Date: Wed Nov 12 20:22:11 2014
HibernationDevice: RESUME=UUID=85e4a4ec-638f-4cac-820e-4f458beed81c
InstallationDate: Installed on 2013-09-16 (422 days ago)
InstallationMedia: Lubuntu 13.04 "Raring Ringtail" - Release i386 (20130423.1)
MachineType: Dell Inc. Inspiron 1010
ProcFB: 0 psbdrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-24-generic root=UUID=9116d68a-2def-4507-83f0-9e895e68e835 ro quiet splash vt.handoff=7
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
 linux-restricted-modules-3.16.0-24-generic N/A
 linux-backports-modules-3.16.0-24-generic  N/A
 linux-firmware                             1.138
SourcePackage: linux
UpgradeStatus: Upgraded to utopic on 2014-11-10 (2 days ago)
dmi.bios.date: 07/23/2009
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A07
dmi.board.name: 0R990K
dmi.board.vendor: Dell Inc.
dmi.board.version: A07
dmi.chassis.asset.tag: **********
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: A07
dmi.modalias: dmi:bvnDellInc.:bvrA07:bd07/23/2009:svnDellInc.:pnInspiron1010:pvrA07:rvnDellInc.:rn0R990K:rvrA07:cvnDellInc.:ct8:cvrA07:
dmi.product.name: Inspiron 1010
dmi.product.version: A07
dmi.sys.vendor: Dell Inc.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Confirmed


** Tags: apport-bug i386 utopic

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https://bugs.launchpad.net/bugs/1392024

Title:
  Backlight control not working Dell Insprion Mini 10

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  Since my upgrade from Lubuntu 14.04 to 14.10, my backlight controls
  (hotkeys to increase/decrease brightness) no longer work on my Dell
  Inspiron Mini 10. With 14.04 and earlier versions there was no
  problem.

  There are entries under /sys/class/backlight. I have also tried
  booting with acpi_backlight=vendor. After rebooting with that option,
  there was a dell entry under /sys/class/backlight, but this didn't fix
  the problem.

  Trying to pass brightness values to the files under
  /sys/class/backlight didn't change brightness either (I believe I
  tried all of them).

  I'll try to add the attachments recommended by
  https://wiki.ubuntu.com/Kernel/Debugging/Backlight in a moment.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: linux-image-3.16.0-24-generic 3.16.0-24.32
  ProcVersionSignature: Ubuntu 3.16.0-24.32-generic 3.16.4
  Uname: Linux 3.16.0-24-generic i686
  ApportVersion: 2.14.7-0ubuntu8
  Architecture: i386
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  rb706      1823 F.... lxpanel
  CRDA: Error: [Errno 2] Datei oder Verzeichnis nicht gefunden: 'iw'
  CurrentDesktop: LXDE
  Date: Wed Nov 12 20:22:11 2014
  HibernationDevice: RESUME=UUID=85e4a4ec-638f-4cac-820e-4f458beed81c
  InstallationDate: Installed on 2013-09-16 (422 days ago)
  InstallationMedia: Lubuntu 13.04 "Raring Ringtail" - Release i386 (20130423.1)
  MachineType: Dell Inc. Inspiron 1010
  ProcFB: 0 psbdrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-24-generic root=UUID=9116d68a-2def-4507-83f0-9e895e68e835 ro quiet splash vt.handoff=7
  PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-3.16.0-24-generic N/A
   linux-backports-modules-3.16.0-24-generic  N/A
   linux-firmware                             1.138
  SourcePackage: linux
  UpgradeStatus: Upgraded to utopic on 2014-11-10 (2 days ago)
  dmi.bios.date: 07/23/2009
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A07
  dmi.board.name: 0R990K
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A07
  dmi.chassis.asset.tag: **********
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: A07
  dmi.modalias: dmi:bvnDellInc.:bvrA07:bd07/23/2009:svnDellInc.:pnInspiron1010:pvrA07:rvnDellInc.:rn0R990K:rvrA07:cvnDellInc.:ct8:cvrA07:
  dmi.product.name: Inspiron 1010
  dmi.product.version: A07
  dmi.sys.vendor: Dell Inc.

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