[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 #40 from agd5f at yahoo.com  2007-10-04 11:02 PST -------
(In reply to comment #37)
> thus, when switching VTs to the first instance, the radeon driver does
> something right with the hardware... if I only knew what it is exactly :-)
> 

It's probably an ordering thing.  Play around with the ordering of the radeon
register restore.  You may have have to restore the ext tmds regs before
enabling the crtc or the pll or the dvo/fp control regs.  For example in
radeon_output.c::radeon_mode_set(), try swapping the order of
RADEONRestoreDVOChip() and RADEONRestoreFP2Registers().  If that doesn't work,
you might try moving RADEONRestoreDVOChip() into
radeon_crtc.c::radeon_crtc_mode_set() before you restore the crtc registers or
pll registers, etc.


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