ati xrandr: cannot find crtc for output DVI-0

Alex Deucher alexdeucher at
Thu Sep 13 18:13:21 PDT 2007

On 9/5/07, Jan Dittmer <jdi at> wrote:
> Alex Deucher wrote:
> >>> re-worked.  Do you have any color management or gamma correction
> >>> packages installed that automatically run at start up?  do you still
> >>> get the brightness if you star up a bare X server?
> >> Yes. Synchronization and picture quality on the dvi->vga head seems
> >> much worse than the one on the vga output in general even when
> >> configuring the exacltly same modes. I'll see that I a) dig up a
> >> dvi cable without the 4 extra pins, b) a new adapter and c) a new
> >> vga cable and see if that makes a difference. Otherwise I've a X300
> >> lying around which I could try instead (is that card supported?).
> >>
> With a DVI cable the output looks good. VGA cable bad. What does
> that tell us?

some sort of problem with the DAC apparently.


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