Public bug reported:
Under Ubuntu 8.04, brightness control on an asus n20a does not work. The
asus-laptop module is loaded and /sys/class/backlight/asus-laptop/
exists with the following files:
-r--r--r-- 1 root root 4,0K 2008-12-06 01:39 actual_brightness
-rw-r--r-- 1 root root 4,0K 2008-12-06 01:39 bl_power
-rw-r--r-- 1 root root 4,0K 2008-12-06 01:39 brightness
-r--r--r-- 1 root root 4,0K 2008-12-06 00:44 max_brightness
drwxr-xr-x 2 root root 0 2008-12-06 01:39 power
lrwxrwxrwx 1 root root 0 2008-12-06 00:44 subsystem ->
../../../../class/backlight
-rw-r--r-- 1 root root 4,0K 2008-12-06 01:39 uevent
I can echo numbers to brightness, but nothing happens. The gnome-
brightness-applet has no effect, and neither does the xbacklight
utility. However, under Fedora 10, brightness control works just fine.
They use the same kernel version, so I fix should be there...
Please, let me know if I can post additional information (as of now, I'm
upgrading to Jaunty Jackalope to see if this and other issues are fixed
there).
** Affects: acpi (Ubuntu)
Importance: Undecided
Status: New
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on asus n20a, brightness control does not work
https://bugs.launchpad.net/bugs/305643
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