[mythtv-users] Can't adjust contrast, brightness etc in Mythtv .20

Robert Tsai mythtv at tsaiberspace.net
Wed Jan 17 00:18:31 UTC 2007

On Tue, Jan 16, 2007 at 04:16:38PM -0800, Robert Tsai wrote:
> On Tue, Jan 16, 2007 at 06:07:04PM -0600, Randy Ferrill wrote:
> > When I hit the F key and try to adjust birghtness , contrast , etc
> > it changes to a -1 and won't change.
> > 
> > PVR-250 and Nvidia Geforce 4MX card, FC5 and Mythtv .20.
> > 
> > I searched the archive and found 1 posting but no answer or replies
> I see the same thing. A few weeks ago I traced this problem down to a
> failure in VideoOutputXv::SetPictureAttribute; one of the X or Xv
> calls is failing.
> The caller TV::DoChangePictureAttribute does not check for the
> sentinel "-1" return value; hence you see "-1" in your OSD.
> I don't know why the X/Xv calls are failing. Too many things have
> happened since this was last working (distro/X.org upgrade, kernel
> upgrade, NVidia driver upgrade, etc.).

If it matters:

- AMD64
- NVidia FX5200, v9746 (also with a few prior versions)
- Linux (also with
- Ubuntu Edgy Eft

I think things were working with Dapper Drake.


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