Bug#324500: mga: G550 Dualhead
Adrian von Bidder wrote:
> * after boot, only one screen is active (same as before). Switching to
> Text mode and back solves this problem.
> * which monitor is seen at which port, and signal for which monitor is
> generated to which port, has apparently been randomly switched around.
>
> My setup is a Hitachi and a BenQ, I usually drive the Hitachi at 1440x1080
> (picture gets very bad at 1600x1200 though it's in the specs...), the BenQ
> at 1280x1024 (TFT, hardware res).
>
> With the xorg.conf below, the best I can get is the BenQ running just fine
> and the Hitachi running at a ghastly 1440x1050 at 60Hz, within the clock
> spec of the BenQ. I could, of course, give the video signal destined for
> the Hitachi to the BenQ but it doesn't like that much. In other words:
> apparently the DDC monitor detection applies to the wrong video output.
> (Is there no option to just tell Xorg to generate 200MHz even though it
> thinks the monitor only does 140MHz?)
>
> Swapping the "Screen 0" and "Screen 1" identifiers gives me variations on
> the same topic, as does physically swapping monitor plugs. But one thing
> stays: the right video signal is never generated for the correct monitor.
>
Fortunately, the upcoming randr 1.2 support for MGA might help for all this.
> Oh, yeah: moving back to just the old mga_drv.so does *not* work, this time,
> so I fear the bug is somewhere deeper in Xorg this time :-/
>
It might be related to the upgrade of xserver-xorg-core 1.3 currently in
unstable. Could you try to downgrade to xserver-xorg-core 2:1.1.1-21
(the one in Etch/stable and testing)?
Brice
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