[Bug 46287] [R600] DVI monitor fails to resume after DPMS off

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=46287

--- Comment #2 from Alex Deucher <agd5f at yahoo.com> 2012-08-15 19:22:30 UTC ---
(In reply to comment #1)
> I'm having similar symptoms on an ATI FirePro 2460, 4 miniDP connectors, 2 DP
> monitors and 2 mDP->DVI adapters w/DVI monitors attached.  DisplayPort-0
> connected via one of the mDP->DVI adapters fails to resume after suspend, but
> the other three monitors come back fine.  Sometimes it is DisplayPort-3
> connected to the other mDP->DVI adapter that doesn't come back instead.
> 
> The difference here is that no amount of LCD power off, remove/reattach DVI
> cable, remove/reattach mDP->DVI adapter will make the screen wake up.  I have
> to do a full system reboot.

What kernel are you running?  Can you try a recent 3.6 snapshot?

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