[Nouveau] [Bug 37922] NV86: too high power usage.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=37922

maximlevitsky at gmail.com changed:

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--- Comment #11 from maximlevitsky at gmail.com 2011-07-29 10:31:42 PDT ---
Created an attachment (id=49725)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=49725)
final trace

Thats it, I found what register write spoiled the work done by trace.
It would seem to me that that is some sort of PFIFO idle mode register, clock
gating or whatever. nouveau sets register 0x400824, PGRAPH.CTXCTL_FLAGS_0 to
0x4000 and spoils things. Now the latest trace or now more correctly set of
register writes undos that register setting. So thats it 3W less while running
normal desktop and compiz.

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