[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 #32 from agd5f at yahoo.com  2007-10-04 07:38 PST -------
(In reply to comment #31)
> right now I'm using the following intialization sequence, which does set the
> enable bit only after everything else as been set:
> 

does it work properly?

> 
> btw, I've noticed an interesting behaviour with the radeon driver using the
> code above when going to sleep by "pbbcmd sleep" (I need so switch to a text-vt
> before doing so, otherwise when doing this from within X11 the powerbook will
> perform some kind of power-off... I'm not sure yet, whether to file this
> against Xorg or rather against the linux kernel :-/); anyway there are two
> scenarios:
> 

I'm not familiar with "pbbcmd sleep" unfortunately.

> 
> ...seems as if Xorg is able to restore some setup/initialization it saved
> before going to sleep?

well, the driver saves all the regs it touches when it starts up and then
restores those regs when you switch VTs or quit X.  We don't save/restore the
ext TMDS regs yet (they get left as set by the driver), but I suppose we
should.


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