[Bug 72710] rv635: resume from hibernation the second time fails

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=72710

Martin Peres  changed:

   What|Removed |Added

 Status|NEW |RESOLVED
 Resolution|--- |MOVED

--- Comment #5 from Martin Peres  ---
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[Bug 72710] rv635: resume from hibernation the second time fails

[bugzilla-dae...@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=72710

--- Comment #4 from Michel Dänzer  ---
Is there any way you can get more information about the panic on resume, e.g.
via a serial console or netconsole or some suspend/hibernate specific debugging
mechanism?

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[Bug 72710] rv635: resume from hibernation the second time fails

[bugzilla-dae...@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=72710

Harald Judt  changed:

   What|Removed |Added

Summary|rv635: resume fails |rv635: resume from
   ||hibernation the second time
   ||fails

--- Comment #3 from Harald Judt  ---
Status update: After updating to 3.18.1 vanilla and booting with radeon.dpm=0,
suspend/resume now works reliably.

Hibernating/resuming still fails, but only and always on the second cycle, the
first cycle seems to work fine now:
1) Boot with radeon.dpm=0 (radeon.dpm=1 seems to have its own stability
troubles)
2) hibernate
3) resume
4) hibernate
5) resume => kernel panic after loading pages (counting from 0% to 100%).

It seems the kernel panics when trying to switch back to the X screen.

Unfortunately, I am for some reason no longer able to boot with a 3.6/3.7
kernel (maybe because of an udev problem), so I cannot bisect - and I am not
sure any 3.6 kernels worked reliably before because I remember it had issues
too.

I've tried to suspend/resume between the hibernation cycles, but that does not
change anything; hibernate/resume will still fail on the second resume attempt.

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