[mythtv-users] M2NPV, nvidia/X11 settings
Mark A. O'Neil
mark.a.oneil at Dartmouth.EDU
Tue Apr 3 15:14:38 UTC 2007
I have finally reached the tweaking stage of my new MythTV backend.
The system is based on an ASUS M2NPV-VM with 2 GB ram and a 2.6 GHz
64bit CPU with tons of HD space, a PVR-150 and a PVR-500; all stuffed
into a Silverstone case with a silent Silverstone 500W PS. All
running on FC6 (2.6.20-1.2933), the latest ivtv, lirc, nvidia driver,
and the stable .20 MythTV base. This all is displayed via a Panasonic
Before getting started with my question, the Silverstone case with
the stock fans runs wicked cool - even overloaded with drives. I am
thinking of adding a heat sink/fan to the second nvidia bridge chip
as it seems to be the only 'hot' chip in the box at the moment.
So here is the problem - and I think - this is less a 'problem' and
more a configuration issue - either for the on board nvidia 6150 or
the recording profile.
Simply put: playback of the desktop and recorded video is fuzzy,
viewable, but slightly fuzzy, while playback from DVD or DVD-on-
Harddrive media is awesome. This is the case using any of the outputs.
I think the issue is resolution interpolation...either at the
hardware/video level, the recording profile, or both. Though I am
thinking it is more hardware than MythTV profiles, as the desktop
itself displays fuzzily - perhaps nvidia/x11 settings are the place
The projector has a native resolution of 1280x720 and I cannot get
the 6150 to output that nor can I seem to raise the scan rate much
above 50 even though I have NTSC set in the bios etc....
PS: regarding my previous issue with channels not being available/
snowy - let's just say that one should not assume that their cabling
is good just because it was the last time it was used - test it first!
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