[mythtv-users] Sound jerkiness with latest RedHat kernel

Craig Longman craigl at begeek.com
Mon Jun 9 23:08:20 EDT 2003


Matt wrote:

>What do you consider "jerky" and "choppy"  ??
>
every second or so the audio stops for a little bit (<1/10 of a second 
perhaps). the video also seems to pause for an equally short period. 
 the problem may only be with one or the other, and then the other one 
just pausing to resync, i'm not sure.  that's what i consider 'choppy'.

>I found the best test is to watch CNN and watch the scroll.  I have now
>noticed that the scroll jerks every 20 - 30 seconds.  I am going to
>recompile a vanilla kernel from kernel.org and see what happens.
>  
>
thats a little different.  i notice minor jerks like that on cnn now 
much less frequently, with the latest experimental + jitter reduction 
code.  it had been much more jerky before that, so much so that i turned 
off the overlay, preferring the odd bit of tearing from the jerking i 
was seeing.  but now i have turned it back on and am pleased.  my system 
still jerks the cnn scroller more that i would like (maybe every 3-5 
seconds), but its way, way better.

that's mytechnical definitions for 'jerky' and 'choppy' at least.  :-)

i also intend on trying a new kernel or two.  i notice someone else 
mentioned that they had problems with both the low-latency and the 
pre-emptive patches, so i might just try one or the other (probably the 
low-latency?) and see if that helps or not.  right now i'm running a 
stock (custom compiled, but nothing out of the ordinary compiled in) 
debian 2.4.20 kernel.

cheers,

    CraigL->Thx();




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