[Bug 72701] Screen freeze when using radeon driver

[bugzilla-daemon at bugzilla.kernel.org]

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

--- Comment #22 from EmanueL Czirai <emanueLczirai at openmailbox.org> ---
In order to avoid any freezes, with the caveat that the DIScrete card won't
ever be turned off (even by # echo 'OFF' >
/sys/kernel/debug/vgaswitcheroo/switch  which would have no effect) I am using:
 radeon.dpm=1 radeon.runpm=1
with the above patch[originally made by  Alex Deucher above in Comment #14 ]
(which I also put here
https://github.com/emanueLczirai/coostomhuston/blob/a3c118ac44b616ebcc049419cc08c4d13ebb44bd/system/lenovo%20z575/OS/manjaro/filesystem%20now/home/emacs/build/kernel/linuxgit/2100_DIScrete_gfx_card_systemfreeze.patch
)

As per our irc conversation, it would seem that maybe the lenovo board requires
some quirk in order to avoid the system freeze and thus I accept the current
workaround. Besides, I always keep my DIS card off from BIOS anyway (the BIOS
Graphics: UDMA setting(instead of Dynamic), does this)

I am thus then giving up on this for now, but I'm always ready to test new
ideas, if any should arise.

Thank you.

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