[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 #14 from Alex Deucher <agd5f at yahoo.com> ---
Created attachment 85578
  --> https://bugs.freedesktop.org/attachment.cgi?id=85578&action=edit
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.

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