** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Trusty)
Importance: Undecided
Status: New
** Also affects: linux-lts-trusty (Ubuntu Trusty)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Precise)
Importance: Undecided
Status: New
** Also affects: linux-lts-trusty (Ubuntu Precise)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Utopic)
Importance: Undecided
Status: New
** Also affects: linux-lts-trusty (Ubuntu Utopic)
Importance: Undecided
Assignee: Edward Lin (airken)
Status: Fix Committed
** Changed in: linux (Ubuntu Utopic)
Status: New => Invalid
** Changed in: linux-lts-trusty (Ubuntu Utopic)
Status: Fix Committed => Invalid
** Changed in: linux-lts-trusty (Ubuntu Precise)
Status: New => Fix Committed
** Changed in: linux-lts-trusty (Ubuntu Trusty)
Status: New => Invalid
** Changed in: linux (Ubuntu Precise)
Status: New => Invalid
** Changed in: linux (Ubuntu Trusty)
Status: New => Fix Committed
** Changed in: linux-lts-trusty (Ubuntu Precise)
Assignee: (unassigned) => Edward Lin (airken)
** Changed in: linux-lts-trusty (Ubuntu Utopic)
Assignee: Edward Lin (airken) => (unassigned)
** Changed in: linux (Ubuntu Trusty)
Assignee: (unassigned) => Edward Lin (airken)
--
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/1354313
Title:
[Dell Inspiron 5721] Brightness control does not work with
12.04.5(with kernel 3.13)
Status in HWE Next Project:
Triaged
Status in “linux” package in Ubuntu:
Invalid
Status in “linux-lts-trusty” package in Ubuntu:
Invalid
Status in “linux” source package in Precise:
Invalid
Status in “linux-lts-trusty” source package in Precise:
Fix Committed
Status in “linux” source package in Trusty:
Fix Committed
Status in “linux-lts-trusty” source package in Trusty:
Invalid
Status in “linux” source package in Utopic:
Invalid
Status in “linux-lts-trusty” source package in Utopic:
Invalid
Bug description:
This is a system installed with latest stable 12.04.5 image.
The Brightness key will invoke the osd-notify indicator but the
display brightness won't change.
Verifying the value changing in backlight interface, system are using
acpi_video0 instead:
Steps to monitor the backlight interfaces:
Press the brightness key until maxium indicator shows:
ubuntu@201210-11863:/sys/class/backlight$ cat intel_backlight/brightness ;
cat acpi_video0/brightness
3407
99
ubuntu@201210-11863:/sys/class/backlight$
Press the brightness key until to minimum indicator shows:
ubuntu@201210-11863:/sys/class/backlight$ cat intel_backlight/brightness ;
cat acpi_video0/brightness
3407
0
-
The workaround found here could solve this issue:
http://itsfoss.com/fix-brightness-ubuntu-1310/
-
Verified with other kernels:
linux-image-generic 3.2.0.67.79 = brightness control works
linux-image-generic-lts-quantal 3.5.0.54.59 = brightness control works
There is possible regression in following kernels:
linux-image-generic-lts-raring 3.8.0.44.44 = brightness control not work
linux-image-generic-lts-saucy 3.11.0.26.23 = brightness control not work
-
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: xorg 1:7.6+12ubuntu2
ProcVersionSignature: Ubuntu 3.13.0-32.57~precise1-generic 3.13.11.4
Uname: Linux 3.13.0-32-generic x86_64
.tmp.unity.support.test.0:
ApportVersion: 2.0.1-0ubuntu17.6
Architecture: amd64
CompizPlugins:
[core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
CompositorRunning: compiz
Date: Fri Aug 8 03:51:43 2014
DistUpgraded: Fresh install
DistroCodename: precise
DistroVariant: ubuntu
DkmsStatus: fwts-efi-runtime-dkms, 14.07.00, 3.13.0-32-generic, x86_64:
installed
ExtraDebuggingInterest: Yes, even including gdb or git bisection work if
needed
GraphicsCard:
Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166]
(rev 09) (prog-if 00 [VGA controller])
Subsystem: Dell Device [1028:05ba]
Advanced Micro Devices, Inc. [AMD/ATI] Mars [Radeon HD 8730M] [1002:6601]
(rev ff) (prog-if ff)
InstallationMedia: Ubuntu 12.04.5 LTS "Precise Pangolin" - Release amd64
(20140807.1)
MachineType: Dell Inc. Inspiron 5721
MarkForUpload: True
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-32-generic
root=UUID=93a24f68-72a1-4335-938a-75f624f57e68 ro quiet splash initcall_debug
vt.handoff=7
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/25/2013
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A12
dmi.board.name: 0KNF68
dmi.board.vendor: Dell Inc.
dmi.board.version: X01
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: A12
dmi.modalias:
dmi:bvnDellInc.:bvrA12:bd10/25/2013:svnDellInc.:pnInspiron5721:pvrA12:rvnDellInc.:rn0KNF68:rvrX01:cvnDellInc.:ct8:cvrA12:
dmi.product.name: Inspiron 5721
dmi.product.version: A12
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.7.12-0ubuntu4
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.52-1~precise1
version.libgl1-mesa-dri: libgl1-mesa-dri N/A
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core N/A
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A
version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A
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