[Bug 72701] Screen freeze when using radeon driver

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=72701

--- Comment #5 from Alex Deucher <alexdeucher at gmail.com> ---
(In reply to klod from comment #4)
> Just a few questions:
> 
> 1. - What are "PX" and "non-PX" cards?

PX = PowerXpress.  PX systems are laptops with two GPUs, an integrated and a
discrete GPU.

> 
> 2. - Aren't these going to disable power management in my GPU? What's the
> difference between applying those and using "radeon.runpm=0" in grub? 
> 

It does not disable power management.  It only disables the special handling
for PX systems which gets incorrectly applied to non-PX systems in certain
cases.  When you apply the patches you shouldn't need to add the radeon.runpm=0
option.  If radeon.runpm=0 fixes the issue, so should the patches.

> 3. - How can I apply those? 
> 

If you are using git:
git am <patch file>

Otherwise:
patch -p1 -i <patch file>

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