<div>Thank you for your reply.</div><div><br></div><div>What should I be looking for in the frontend log? </div><div><br></div><div>A quick search of the log shows this:</div><div><br></div><div>Jul 5 07:08:24 mythbackend1 mythfrontend[2555]: E CoreContext audio/audiooutputalsa.cpp:211 (SetPreallocBufferSize) ALSA: Error opening /proc/asound/card0/pcm1p/sub0/prealloc: Permission denied. </div>
<div>Jul 5 07:08:24 mythbackend1 mythfrontend[2555]: E CoreContext audio/audiooutputalsa.cpp:213 (SetPreallocBufferSize) ALSA: Try to manually increase audio buffer with: echo 192 | sudo tee /proc/asound/card0/pcm1p/sub0/prealloc</div>
<div>Jul 5 07:08:24 mythbackend1 mythfrontend[2555]: E CoreContext audio/audiooutputalsa.cpp:545 (OpenDevice) ALSA: Unable to sufficiently increase ALSA hardware buffer size - underruns are likely</div><div>Jul 5 07:08:26 mythbackend1 mythfrontend[2555]: I CoreContext mythrender_vdpau.cpp:1675 (CreatePresentationSurfaces) VDPAU: Created 2 output surfaces.</div>
<div><br></div><div>Not sure what that permission problem is. My setup is Mythbuntu 12.04 with MythTV 0.25 on a 3.1 GHz two-core Athlon, 4 GB RAM, GT430, not overclocked. Pretty simple setup.</div><div><br></div><div>Does it matter that I'm not using audio through HDMI? My audio is spdif through toslink cable from the mobo to the receiver/amp. I'm not having any audio problem symptoms. It's just that the video playback of medium to fast panning scenes can be seen to slightly stutter at times. </div>
<div><br></div><div>Also I switched this machine over from Mythbuntu 10.10 with MythTV 0.24 to Mythbuntu 12.04 with MythTV 0.25 last July. I don't remember the system having this video stutter before, but I could be wrong :)</div>
<div><br></div><div>-FBP</div><div><br></div>