Asus M50SA ubuntu 8.04 environment

1. Audio path:
i. Add the content listed as below in the bottom of /etc/modprobe.d/alsa-base content.

options snd-hda-intel model=haier-w66

Then reboot, that will fix the problem of the sound playback still out from speaker when plugging a headphone.

ii. Turn on "Front" in Kmix. That will fix there is no sound playback out from headphone problem. By the way, the quantum value of "Front" & "PCM" are involved in the sound quantum.

2. Backlight Control

Use the below command to set the backlight brightness.

$ sudo echo 15 > /sys/devices/platform/asus-laptop/ls_level