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I am sorry if this is a duplicate question, but after 2 days I did not find the answer to this problem, and I would really appreciate a link to a solution. I have been trying to get a video driver on my laptop so that brightness up and down shortcuts (FN+F9 / FN+F10) work.

In additional drivers only the xserver-xorg-video-ati drivers are working fine for me (but without brightness control: adjusting the value in /sys/class/backlight/acpi_video0/brightness, but the actual screen brightness stays max). With the proprietary drivers (fglrx and fglrx-updates) ubuntu loads to the logon screen, but after logon just the desktop image is displayed.

I tried to write in /etc/default/grub:

GRUB_CMDLINE_LINUX="quiet splash acpi_osi=Linux acpi_backlight=vendor"

... but that removed the adjusting brightness option from the system settings and the shortcuts did not do anything.

Hp has a video driver for linux for the 6570b notebook series , link.

It is tar.gz file with two .rpm packages:

  • ati-fglrxG02-HP-kmp-default-8.954_3.0.13_0.27-1.1.x86_64.rpm
  • x11-video-fglrxG02-HP-8.954-1.1.x86_64.rpm

...using:

 sudo yum localinstall <one-of-the-two-above-packages>

I get a lot of unresolved dependencies and do not know how to fix that. Do I need to add additional software sources? I did not find any on the page where the driver can be downloaded. How do I install the above provided linux dirivers by HP in ubuntu 12.10?

1 Answer 1

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With backlight try this

ls /sys/class/backlight

You can override which backlight is used with a snippet:

Section "Device"
  Identifier "Device0"
  Option "Backlight" "name_of_backlight"
EndSection

in /etc/X11/xorg.conf.d/backlight.conf

Propably using /sys/class/backlight/intel_backlight should work.

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