[Bug 10418] Powerbook DVI out only works when booted with monitor attached

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=10418





------- Comment #36 from hvr at gnu.org  2007-10-04 09:04 PST -------
(In reply to comment #31)
> a) going to sleep with Xorg running -> ok
> 1. switching from DVI dual-head Xorg session to text VT
> 2. pbbcmd sleep
> 3. waking up again
> 4. switching back to Xorg session
> -> external DVI output still fine 
> 
> b) going to sleep without Xorg running -> not ok
> 1. terminating working dual-head Xorg session and switch to text VT
> 2. pbbcmd sleep
> 3. waking up again
> 4. starting new Xorg session
> -> external DVI output still fine

I just tried a third variant, in order to verify the suspicion that the ati
driver is able to restore some context necessary to enable proper DVI-out:

c) going to sleep with Xorg running...
1. switching from DVI dual-head Xorg session to text VT
2. inducing suspend-to-ram with "pbbcmd sleep"
3. waking up again
4. starting a new 2nd Xorg instance ("X :2")
5. switching back to the first Xorg session (-> colors ok)
6. switching to the 2nd Xorg instance (-> colors bad!)
7. switching back to the first Xorg session (-> colors still ok)

-> external DVI output still fine with Xorg instance kept over suspend, but
off-color with Xorg instance started right after wakup from console...

...any ideas?


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