Ubuntu

Comment 35 for bug 207473

Same bug here on a XPS M1330.

"blacklist video" fixes the original problem, BUT causes other (more serious) problems: When backlight is dimmed because of idle, the touchpad stops working for a few seconds (and backlight is not dimmed):
psmouse.c: TouchPad at isa0060/serio1/input0 lost synchronization

Is there some other fix (in gnome) for the brightness problem other than "blacklist video"?