[Bug 72701] Screen freeze when using radeon driver

[bugzilla-daemon at bugzilla.kernel.org]

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

EmanueL Czirai <emanueLczirai at openmailbox.org> changed:

           What    |Removed                     |Added
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 Attachment #143031|0                           |1
        is obsolete|                            |

--- Comment #21 from EmanueL Czirai <emanueLczirai at openmailbox.org> ---
Created attachment 157401
  --> https://bugzilla.kernel.org/attachment.cgi?id=157401&action=edit
updated sloppy patch to kernel 3.18-rc4

Doesn't freeze(works) with(kernel params):
radeon.dpm=1 radeon.runpm=1
radeon.dpm=0 radeon.runpm=1
(but this doesn't turn off the DIScrete card)
sudo cat /sys/kernel/debug/vgaswitcheroo/switch
0:IGD:+:Pwr:0000:00:01.0
1:DIS: :DynPwr:0000:01:00.0
# echo 'OFF' > /sys/kernel/debug/vgaswitcheroo/switch
has no effect

Freezes system with:
radeon.dpm=0 radeon.runpm=-1
(what I tested, freezes system in about 10 seconds after boot)

Without this patch:
Tested to freeze, only when:
# echo 'OFF' > /sys/kernel/debug/vgaswitcheroo/switch
with:
radeon.dpm=1 radeon.runpm=0
radeon.dpm=0 radeon.runpm=0

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