[Bug 68235] Display freezes after login with kernel 3.11.0-rc5 on Cayman with dpm=1

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=68235

--- Comment #16 from Alexandre Demers <alexandre.f.demers at gmail.com> ---
(In reply to comment #14)
> Created attachment 85578 [details] [review]
> disable various dpm features
> 
> I would suggest disabling various dpm features and see if you can narrow
> down which, if any, help.  This patch disables just about everything.
> 
> ni_dpm_force_performance_level(rdev, RADEON_DPM_FORCED_LEVEL_AUTO) is what
> actually sets the dynamic performance switching into motion.  Prior to that
> the hw is locked into the low performance level.  I sounds like there is
> some bad parameter that is causing a lock up when the smc enables state
> switching.
> 
> Separate from the patch can you also try changing the
> ni_dpm_force_performance_level(rdev, RADEON_DPM_FORCED_LEVEL_AUTO) call in
> ni_dpm_set_power_state() to low (RADEON_DPM_FORCED_LEVEL_LOW) or high
> (RADEON_DPM_FORCED_LEVEL_HIGH) rather than auto?  See if you still get a
> lock up.

I'll try it later today.

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