ati xrandr: cannot find crtc for output DVI-0

Alex Deucher alexdeucher at gmail.com
Mon Aug 27 12:41:03 PDT 2007


On 8/27/07, Jan Dittmer <jdi at l4x.org> wrote:
> Alex Deucher wrote:
> >> Hmmm... I haven't seen this myself, but I does remind me of a similar
> >> problem we had years ago, that may have resurfaced with all the
> >> refactoring of the driver.  I'll see if I can dig up what the solution
> >> was.
> >
> > I think perhaps disp_merge_cntl or disp2_merge_cntl is programmed
> > wrong, (although I can't see how).  Can you dump the values of those
> > regs using radeontool from git?
> >
> > e.g.,
> > radeontool regmatch DISP_MERGE_CNTL
> > radeontool regmatch DISP2_MERGE_CNTL
>
> After some grepping and patching:
>
> $ sudo ./radeontool regmatch DISP2_MERGE_CNTL
> DISP2_MERGE_CNTL (0d68) 0x00000000
> $ sudo ./radeontool regmatch DISP_MERGE_CNTL
> DISP_MERGE_CNTL (0d60)  0xffff0000

hmmm... those look fine.  does the problem persist at depth 16?

Alex



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