[Bug 72701] Screen freeze when using radeon driver

[bugzilla-daemon@bugzilla.kernel.org]

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

--- Comment #20 from EmanueL Czirai <somelinuxbugs@riseup.net> ---
Created attachment 143031
  --> https://bugzilla.kernel.org/attachment.cgi?id=143031&action=edit
sloppy patch try

I modified your previous patch slightly(because some hunks failed and
compilation error), but still doesn't handle the case when runpm=1 only when
runpm=-1  but regardless I wanted to test it and just as expected it doesn't
work(system locks up still) and I'm realizing it's because vgaswitcheroo is
doing the turning OFF of the DIS card and since this is why it freezes anyway,
I guess the problem is in the vgaswitcheroo not being able to turn off DIS
without crashing (just like amd mobility does on Windows).
 Too tired, can't keep my eyes open, but I'll try to find out more about it in
the morning. :)

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