[Bug 87728] Starting X produces a screen of static and GPU lockups (Radeon HD 7870)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=87728

--- Comment #6 from John Steele Scott <toojays at toojays.net> ---
(In reply to Michel Dänzer from comment #5)
> The fix from bug 60879 might help.

Thanks Michel. I tried replacing my radeonsi_dri.so (only) with one built from
the 10.3 branch at 5878e18, which includes the fix for bug 60879. The display
is still grey static, but now there is no "mouse cursor" kind of thing.
Periodically it cycles between static and blank screen. After a couple of
minutes of this, the box locks up hard.

The syslog output is a little different as well. Now I see some lines like: 

Dec 28 10:57:00 kano kernel: [drm:atom_op_jump [radeon]] *ERROR* atombios stuck
in loop for more than 5secs aborting
Dec 28 10:57:00 kano kernel: [drm:atom_execute_table_locked [radeon]] *ERROR*
atombios stuck executing C238 (len 254, WS 0, PS 4) @ 0xC262
Dec 28 10:57:00 kano kernel: [drm:atom_execute_table_locked [radeon]] *ERROR*
atombios stuck executing B798 (len 106, WS 0, PS 8) @ 0xB7ED

which were not there before. I'll attach the full syslog shortly.

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