https://bugs.freedesktop.org/show_bug.cgi?id=72710
Harald Judt h.judt@gmx.at changed:
What |Removed |Added ---------------------------------------------------------------------------- Summary|rv635: resume fails |rv635: resume from | |hibernation the second time | |fails
--- Comment #3 from Harald Judt h.judt@gmx.at --- 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.