Re: [LAU] KMS and xruns

2009/9/13 Dominic Sacré <dominic.sacre@email-addr-hidden>

> On Friday 11 of September 2009 23:22:16 Ray Rashif wrote:
> > OK the bug is here:
> > https://bugs.freedesktop.org/show_bug.cgi?id=23739
> >
> > A driver bug, not KMS. Be awesome if more people could confirm.
>
> I've noticed the same problem with the latest Intel driver versions. It
> doesn't seem to be an issue when running a realtime kernel, but with a
> normal kernel the effect on JACK is pretty bad, especially when using
> FFADO. Even very large JACK period sizes don't really help.
>
> For now I went back to driver version 2.7.1, which still let you choose
> between UXA and EXA (the latter has been removed in 2.8). UXA has the
> problems you describe, EXA doesn't. I'll try to gather some more
> information on this and add it to your bug report.
>
>
> Dominic
>
>
Awesome, thanks.

Yes, UXA and the developers are mostly sure as well, that it's probably the
new method of buffering when drawing. As such, I was told to try:

Option "SwapbuffersWait" "false"

This only decreases the amount of xruns it seems. Events like switching on
or off compositing will trigger a burst of xruns.

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Received on Sun Sep 13 16:15:01 2009