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

Rich West Rich.West at wesmo.com
Mon Mar 16 23:10:23 UTC 2009

On Mon, 16 Mar 2009 11:49:56 -0400, Rich West <Rich.West at wesmo.com> wrote:
>> 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

Ahh.. sadly, I can only change it to 4x (rather than 8x).  The issue only
seems to show itself when the overlay is up.  :(  I wonder if there is
something there that I can tinker with...


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