Comment 196 for bug 568611

i915.alse_backlight=1 result:
no more hotkeys (full bright, which is always the default)
immediately bright again after lid open (instead of black that I can regulate up with hotkeys)
/sys/class/backlight/ empty (instead of intel_backlight without parameter)
also:
unknown parameter i915.alse_backlight at bootup
screen resolution is much lower

with:
Acer Extensa 5635Z from bug 518002 and comment 190
maverick with patched 2.6.38-9 and xorg-edgers

Thanks