Hello guys,
I've solved this problem doing something like this=
http://askubuntu.com/questions/76081/brightness-not-working-after-installing-nvidia-driver
I'm using Ubuntu 14.04 64bits release in my Vostro 3300 with Nvidia
GeForce 310M. I think the problem is about Nvidia/X11 receive the
variable passed by Fn+Up/Down, because you can check with 'cat
/sys/class/backlight/acpi_video0/brightness' that the value changes
after you press Fn+Up/Down but the backlight bright doesn't.
The full proceadure that worked for me:
1. I edited the grub with
# nano /etc/default/grub
and edited this line:
GRUB_CMDLINE_LINUX="acpi_osi=Linux"
2. After that:
# update-grub
3. Installed the Nvidia driver (proprietary-tested) on Ubuntu Software
Center, and REBOOT.
4. Checked if my video card was identified:
# lspci | grep -i vga
5. Created the X11 conf file with (there wasn't this file there yet):
# nano /usr/share/X11/xorg.conf.d/10-nvidia-brightness.conf
and write down on it these lines:
------------------
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce 310M"
Option "RegistryDwords" "EnableBrightnessControl=1"
EndSection
------------------
the most important part is this one: Option "RegistryDwords"
"EnableBrightnessControl=1"
6. Saved and reboot.
Now everything works fine and the values (from 0 to 15 that you can
check here /sys/class/backlight/acpi_video0/brightness) are now equal
total darkness to a full bright screen.
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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to xserver-xorg-video-intel in Ubuntu.
https://bugs.launchpad.net/bugs/1273234
Title:
[acpi backlight] Can't control screen brightness
Status in “xserver-xorg-video-intel” package in Ubuntu:
Confirmed
Bug description:
I press the buttons for changing screen brightness. It does appear a
box that says screen brightness is changing, but nothing happens.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: xorg 1:7.7+1ubuntu7
ProcVersionSignature: Ubuntu 3.13.0-5.20-generic 3.13.0
Uname: Linux 3.13.0-5-generic x86_64
NonfreeKernelModules: wl
.tmp.unity.support.test.0:
ApportVersion: 2.13.1-0ubuntu2
Architecture: amd64
CompizPlugins: No value set for
`/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CurrentDesktop: Unity
Date: Mon Jan 27 14:48:45 2014
DistUpgraded: 2014-01-27 14:45:52,877 DEBUG enabling apt cron job
DistroCodename: trusty
DistroVariant: ubuntu
DkmsStatus:
bcmwl, 6.30.223.141+bdcom, 3.11.0-15-generic, x86_64: installed
bcmwl, 6.30.223.141+bdcom, 3.13.0-5-generic, x86_64: installed
ExtraDebuggingInterest: I just need to know a workaround
GraphicsCard:
Intel Corporation Atom Processor D4xx/D5xx/N4xx/N5xx Integrated Graphics
Controller [8086:a011] (prog-if 00 [VGA controller])
Subsystem: Hewlett-Packard Company Device [103c:148a]
Subsystem: Hewlett-Packard Company Device [103c:148a]
InstallationDate: Installed on 2014-01-12 (14 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64
(20131016.1)
MachineType: Hewlett-Packard HP Mini 110-3100
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-5-generic
root=UUID=04612c8e-2b69-468e-8d79-e1277a28f411 ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: Upgraded to trusty on 2014-01-27 (0 days ago)
dmi.bios.date: 01/14/2011
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: F.15
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 148A
dmi.board.vendor: Hewlett-Packard
dmi.board.version: 79.4B
dmi.chassis.asset.tag: Chassis Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.chassis.version: Chassis Version
dmi.modalias:
dmi:bvnHewlett-Packard:bvrF.15:bd01/14/2011:svnHewlett-Packard:pnHPMini110-3100:pvr058D110000202D00000300100:rvnHewlett-Packard:rn148A:rvr79.4B:cvnHewlett-Packard:ct10:cvrChassisVersion:
dmi.product.name: HP Mini 110-3100
dmi.product.version: 058D110000202D00000300100
dmi.sys.vendor: Hewlett-Packard
version.compiz: compiz 1:0.9.10+13.10.20131011-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.52-1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.0.1-1ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.0.1-1ubuntu2
version.xserver-xorg-core: xserver-xorg-core 2:1.14.5-1ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.2.0-0ubuntu11
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.907-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau
1:1.0.10-1ubuntu1
xserver.bootTime: Mon Jan 27 14:46:36 2014
xserver.configfile: default
xserver.errors:
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
product id 1001
vendor HSD
xserver.version: 2:1.14.5-1ubuntu2
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