[Bug 76483] [NV50, bisected, RFC patch] xset dpms force {on, off} does not work over DP

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=76483

--- Comment #3 from Karl Schendel <schendel-zf86OBlHRo2+XT7JhA+gdA@public.gmane.org> ---
I think I'm seeing this too.  Mac Pro (2009) with GT120 (G96/NV50) and 24 inch
Apple Cinema display via MDP connection.  powersave blanking used to work in
3.6.3 which was the last kernel I used (opensuse 12.3 otherwise).  Now it does
nothing in opensuse 13.1 which has 3.11.10, also notwork with a 3.14.1 kernel. 
X thinks that it's turned off the display (according to xset q) but nothing
happened.

I would be happy to test a fix if and when a trial is ready.  I have all sorts
of trouble with nouveau on this hardware so I suspect it's not a common setup. 
:-)
Fortunately, recent versions seem pretty good other than the lack of powersave.

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