[mythtv-users] Can't adjust contrast, brightness etc in Mythtv .20
mythtv at tsaiberspace.net
Wed Jan 17 08:01:03 UTC 2007
On Tue, Jan 16, 2007 at 07:40:37PM -0800, Bruce Markey wrote:
> 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.).
> This used to be a common question a couple years ago. It reads the
> current value then adds or subtracts 655. However, at some point, it
> stopped being able to get the current value unless X had the "v4l"
> module loaded. Make sure you have:
> Section "Module"
> Load "v4l"
> in your /etc/X11/xorg.conf or whatever file is used for your
> X configuration.
This didn't do anything for me, either.
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