[Bug 77001] Radeon R9 270X GPU lockup and resume failure after all night inactivity [drm,radeonsi]

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=77001

--- Comment #4 from Grzegorz Kowal <custos.mentis at gmail.com> ---
I've got this again. This time with radeon.dpm=0 and power profile set to
"low".

Sometimes when I switch the computer on, it seems that system does not initiate
the GPU properly and monitor stays off. The system loads but with the following
error:

BUG: unable to handle kernel NULL pointer dereference at 0000000000000078
IP: [<ffffffff81337bc3>] radeon_driver_open_kms+0x83/0x200

The full log is attached.

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