[LAU] jackd: A lot of xruns

[Simon Edwards]

Markus Herhoffer wrote:
>>> This chipset is known to have some problems, try running jackd with
> number of
>>> periods = 3.
>>>
>>> If that doesn't fix it, you might also want to try out the module option
>>> position_fix=1 for the snd-hda-intel module.
> 
> I've set both parameters and now it works without xruns at all. But what
> does "position_fix=1" actually do?

Setting position_fix=1 and jack periods=3 also cleaned up more problems 
running on my Intel chipset based laptop with:

00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High 
Definition Audio Controller (rev 02)

Just quickly looking at the driver source, position_fix appears to 
select one 2 or 3 different methods of managing buffers (or something 
like that).

cheers,

-- 
Simon Edwards             | KDE-NL, Guidance tools, Guarddog Firewall
simon at simonzone.com       | http://www.simonzone.com/software/
Nijmegen, The Netherlands | "ZooTV? You made the right choice."