Mythtv playing way to fast using DRM VBlank ioctl

Greg Stark gsstark at mit.edu
Thu Mar 30 12:19:40 PST 2006


"Alex Deucher" <alexdeucher at gmail.com> writes:

> On 30 Mar 2006 11:58:59 -0500, Greg Stark <gsstark at mit.edu> wrote:
> >
> > I'm still having trouble getting mythtv running displaying on my R350 Radeon.
> > I've defeated the bogus mergedfb dot clocks with an LD_PRELOAD hack but now I
> > have a new problem.
> 
> Once again if you are using mergedfb the drm vblank won't work for you
> on crtc2 since it only applies to the first crtc.  AFAIK, there's no
> drm support for vblank on crtc2.

It's sounding like my life would be much simpler if I could just get dual head
working. But it doesn't work on the stock drivers where only one output gets a
signal.

So I just tried the March 30 snapshot and neither monitor gets a signal. Plus
as a bonus when I go back to merged frame Xv no longer works properly either.

Should I just start binary searching over the snapshots to find one that
works? Is there anyone else out there with an RV350 card in dual monitor
mode that can point me to a working snapshot?

-- 
greg




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