I figured out Inspiron 6400 fc5
- Inspiron 6400 (Intel HDA card)
- fc5 stock kernel
- Ardour2 from svn
- jack from svn
- qjackctl from svn
When I started, I could not get low latency and had many xruns.
After consulting the web (and a particularly helpful friend), here is what finally fixed the problems:
1) start snd-hda-intel from modprobe.conf with the following sequence:
alias snd-card-0 snd-hda-intel
options snd-card-0 index=0
options snd-hda-intel index=0 position_fix=1
This signifies that there is no position fix
2) Without the position_fix argument, the "auto" option is implied
3) I didn't try the other options found through /sbin/modinfo snd-hda-intel (because I didn't understand what they meant and I was too lazy to find out).
Boy, Ardour2 is a nice looking project, Kudos!