Comment # 32
on bug 68235
from Alexandre Demers
(In reply to comment #31) > Created attachment 85989 [details] [review] [review] > testing patch > > Try this patch independent from any other patches. It forces the engine and > memory clocks of all performance levels within a power state to the lowest > level. If it works, then try and comment out either the sclk part or the > mclk part and see if either helps. That should help us narrow down whether > it's a mclk problem or an sclk problem. Running with the patch works fine over a vanilla kernel 3.12-rc1. The following works also fine: // if (pl->sclk > 25000) // pl->sclk = 25000; if (pl->mclk > 15000) pl->mclk = 15000; Which means sclk is working properly. However, the opposite results in a blank screen before I can even get at the login screen. It seems mclk is the problematic part.
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