Screen brightness does not change
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
xorg (Ubuntu) |
Expired
|
Low
|
Unassigned |
Bug Description
When I try to change the screen brightness using my Laptop's keyboard it shows me a "bar" that the screen brightness changes. However, the actual brightness does not change.
If I tell the computer to change the brightness, then disconnect the charger, close the lid, wait a few seconds and re-open the lid the screen's actual brightness changes to the last one I set.
This work-around works for me, but it is very annoying. If all I want to do is reduce brightness to save power I also need to make my computer sleep and wake it up again so that the brightness is applied. I do not have the immediate feedback to see if it is bright enough for my environment.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: xorg 1:7.7+1ubuntu8
ProcVersionSign
Uname: Linux 3.13.0-36-generic x86_64
NonfreeKernelMo
.proc.driver.
.proc.driver.
.proc.driver.
NVRM version: NVIDIA UNIX x86_64 Kernel Module 331.38 Wed Jan 8 19:32:30 PST 2014
GCC version: gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1)
ApportVersion: 2.14.1-0ubuntu3.5
Architecture: amd64
CompizPlugins: No value set for `/apps/
CompositorRunning: None
CurrentDesktop: GNOME
Date: Sat Oct 4 08:50:59 2014
DistUpgraded: Fresh install
DistroCodename: trusty
DistroVariant: ubuntu
ExtraDebuggingI
GraphicsCard:
NVIDIA Corporation GK107GLM [Quadro K1000M] [10de:0ffc] (rev a1) (prog-if 00 [VGA controller])
Subsystem: Lenovo Device [17aa:21f6]
InstallationDate: Installed on 2014-03-27 (190 days ago)
InstallationMedia: Ubuntu-GNOME 14.04 LTS "Trusty Tahr" - Beta amd64 (20140326.1)
MachineType: LENOVO 24382HU
ProcKernelCmdLine: BOOT_IMAGE=
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/15/2014
dmi.bios.vendor: LENOVO
dmi.bios.version: G5ET99WW (2.59 )
dmi.board.
dmi.board.name: 24382HU
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.
dmi.modalias: dmi:bvnLENOVO:
dmi.product.name: 24382HU
dmi.product.
dmi.sys.vendor: LENOVO
version.compiz: compiz N/A
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.52-1
version.
version.
version.
version.
version.
version.
version.
version.
version.
xserver.bootTime: Fri Oct 3 17:05:56 2014
xserver.configfile: default
xserver.errors: open /dev/fb0: No such file or directory
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
xserver.version: 2:1.15.1-0ubuntu2.1
Alex Shtof, thank you for reporting this and helping make Ubuntu better. As per http:// support. lenovo. com/us/ en/products/ laptops- and-netbooks/ thinkpad- w-series- laptops/ thinkpad- w530 an update to your computer's buggy and outdated BIOS is available (2.61). If you update to this following https:/ /help.ubuntu. com/community/ BIOSUpdate does it change anything?
If it doesn't, could you please both specify what happened, and provide the output of the following terminal command:
sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
For more on BIOS updates and linux, please see https:/ /help.ubuntu. com/community/ ReportingBugs# Bug_reporting_ etiquette .
Please note your current BIOS is already in the Bug Description, so posting this on the old BIOS would not be helpful. As well, you don't have to create a new bug report.
Once the BIOS is updated, and the information above is provided, then please mark this report Status New.
Thank you for your understanding.