[mythtv-users] PVR350 Ghost/multiple Images
Scot L. Harris
webid at cfl.rr.com
Fri Oct 7 21:21:25 UTC 2005
On Fri, 2005-10-07 at 15:50, Keith R wrote:
> I'm trying to get mythtv up on my new install and am running into
> issues with the tv-out of my PVR-350 displaying all graphical
> boot and X images with ghosting or what looks like the same image
> multiple times on the screen.
> During the initial install I got X as well as the video for mythtv
> up and working fine. When I rebooted the server this problem
> I loaded the saa7127 module with the test image after all this and
> it came up alright. In addition, I completely powered off both
> the TV and the computer with that hope that perhaps some memory
> "buffer thing" was corrupt and need to be cleared.
> I then rebooted the machine after commenting out all the ivtv
> modules. I loaded the ivtv modules manually (in the same order as
> would have been done during my initial boot that worked
> successfully) and still have the same issue with the ghost images.
In the slave backend I built recently I saw some severe ghosting, of
magnitude that would make it unwatchable.
I found that in this particular system for some reason the settings for
dnr_temporal would default to 8. Setting this value to 0 resolved the
ghosting problem for me.
/usr/bin/ivtvctl -d /dev/video0 -c dnr_temporal=0
You can look at all of those settings using:
I ended up putting this in rc.local so it gets reset during boot up.
What is funny is that my master backend with a PVR-350 never had this
problem. That system defaults to 0 in all those options.
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