[Bug 16799] hibernate broken on radeon with latest libdrm git

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=16799





--- Comment #5 from Michel Dänzer <michel at tungstengraphics.com>  2008-07-21 23:46:24 PST ---
(In reply to comment #4)
> (In reply to comment #2)
> > Weird... when you say hibernate you mean suspend to disk, right?  The sequence
> > there should be:
> >   1) server & driver do LeaveVT
> 
> Should that disable vblank interrupts?

Possibly, but with only GDM, there shouldn't be anything waiting for vblank.

> > Does the radeon X driver do any pre/post modeset ioctl calls?  

Sure... on each modeset as well as across LeaveVT/EnterVT.

(Of course, only if the driver was built against libdrm headers with modeset
ioctl definitions)

> > Also on resume does it re-enable vblank interrupts?

Yes. But if I'm reading the initial report correctly, the problem occurs at
suspend time.

FWIW, suspend to RAM still works fine for me.


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