[mythtv-users] MythTV frontend + XVMC + AGP?

Rich West Rich.West at wesmo.com
Mon Mar 16 15:49:56 UTC 2009


> For me a working solution was to go into bios and set my agp bus speed
> to 1x and I might have played with another option in the bios agp
> settings. Sorry but cant check it atm. I am using xvmc to decode both
> 1080i and 720p on a AthlonXP clocked at 2 ghz. Only thing I see is an
> occasional glitch in the audio, usually on loud material but it may be
> related to my piping digital audio out to my receiver via optical
> cable and not about xvmc at all. 

Really?  Hrmm.. cool...now that is something to try.  You have me
curious now.. :) What's the specs of your install?  I was trying F10 +
XvMC + Nvidia 6200 AGP 512MB (driver ver 100.14.11)+ 1GB RAM. 

The *only* problem I was having was with the Nvidia driver.  Anything
greater than 100.14.11 would still allow me to enable XvMC, but the
overlays (like when you pause or skip) would spike the CPU usage and
cause everything to stutter like crazy until the overlay faded away. 
Supposedly, that was due to a bug that showed up in the drivers after
100.14.11.  It would be awesome if you have a workaround that I can
replicate. :)

As an aside, the reason I upgraded from F8 to F10 was because I started
seeing stuttering in MythVideo when viewing DVD ISO's.  I initially
thought it had to do with a mismatch of Mythtv installs between my FEs
and my BE.  I found out last night, after rolling one FE back to F8,
that the problem I was seeing with MythVideo was NFS related.  Backing
the NFS server down to 2.6.24 (matching the kernel version of the FE),
the stuttering went away.  So.. I guess there is some incompatibility
that was introduced in the latest kernel with regard to NFS. :(  Argh.


Anyhow, I'll still try your suggestion.  I'd love to go to F10 with this
configuration.. and it kills me that it works wonderfully under F8, but
I cannot upgrade to F10 without HD playback issues (only with the overlay).

Thanks!
-Rich


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