Ubuntu
alsa-driver package

  1. Bug #568611
  2. Comment #186

Comment 186 for bug 568611

Revision history for this message
Rodrigo M. R. Avila (rodmra) wrote :

Hi Kamal,

still doesn't work for me. I have an Acer travelmate 4230-6704 and can't change lcd brigthness. My Fn key is not working too (keyboard problem).

tried
echo -n 100 > /proc/acpi/video/VGA/LCD/brightness
sudo setpci -s 00:02.0 F4.B=FF

I'm using
Ubuntu Natty with gnome-power-manager version 2.32.0-2ubuntu2+kamal~backlight2~n and linux kernel 2.6.38-8.41+kamal~mjgbacklight3.

lspci
00:00.0 Host bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express Memory Controller Hub (rev 03)
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03)
00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller (rev 03)

lsmod | grep ^i915
i915 515415 3

rodmra@tm4230:/proc/acpi$ ls
ac_adapter battery button event wakeup

rodmra@tm4230:/sys/class/backlight$ ls
intel_backlight

rodmra@tm4230:/sys/class/backlight/intel_backlight$ ls
actual_brightness brightness max_brightness subsystem uevent
bl_power device power type

Thanks.