[mythtv-users] MythTV changing 1080p to 1080i

Ken Scales kscales at xplornet.com
Wed Jun 18 19:58:19 UTC 2008

Mark Kendall wrote:
> 2008/6/18 Ken Scales <kscales at xplornet.com>:
>> problem.  Also, under Settings / Appearance / Video Mode Settings, I
>> have "1020x1080" selected under all of: "GUI", "Video Output:", and all
>> "Output:" settings for "Overrides for specific video sizes".  These all
>> seem to be working fine, but in 1080i.
> Make sure the 'Use different video modes for GUI and video' is not checked.
Thanks, Mark. That did the trick.
> Mythtv does not currently differentiate between interlaced and
> progressive modelines. It is presumably accepting the first 1080
> modeline it receives, which happens to be 1080i. If you deselect that
> option, it won't try  to switch the mode in the first place.
Hmm... this is part of what was so puzzling: since this is a recent 
version of the Nvidia driver, there aren't any modelines specified in my 
xorg.conf file.  Just a
  "Modes        "1920x1080_60"
instead.  So I gather there must be some handshaking and communication 
going on between the nvidia driver, xorg, and mythtv that generated the 
1080i mode information.

Anyways, thanks for your quick response:  it now stays at 1080p. Now I 
just need to dig back through all the other info for the optimization 
tips  :-) . (I see Xorg cpu usage periodically cycling between <1% to 
 >84% playing a pvr-150 mpg recording...)

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