[Bug 19168] xset dpms force off does not turn off LCD backlight

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=19168





--- Comment #10 from Alex Deucher <agd5f at yahoo.com>  2009-05-27 11:03:46 PST ---
(In reply to comment #9)
> The problem on Ibook is that the screen's power is controled by Power
> Management Unit (PMU). There is a module on Linux system. You can control this
> device with /dev/pmu. 
> 
> Do you think radeon driver must control PMU or each desktop power management
> (Powerdevil, GPM...) must control PMU themselves?

I'm not sure what the best solution is.  Adding it to the driver would make it
just work when dpms is used, but most power managers already mess with
backlight to save power, so that should work too.


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