Quoting Atte André Jensen <atte.jensen(a)gmail.com>om>:
Hi
I have a toshiba laptop with a "HDA Intel" sound card and an Edirol USB
ua-1a sound card.
atte@vestbjerg:~$ lspci | grep -i audio
00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio
Controller (rev 03)
If I run jack through qjackctl, clients can often "mess up" jack esp
when loading heavy stuff. This results in the sound becoming distorted
in a metal-like way. A simple restart of jack seems to resolve this.
Are you running jack at 3 periods/buffer? The Intel cards seem to need
that to be happy.
- Peder