[linux-audio-user] further success with tascam us-122

just an update, and a reminder to tascam us-122 users:

make sure acpi is turned off.

i've struggled (off and on) for about half a year to get stable
low-latency performance out of this device (connected to a dell
inspiron 1150). it's been quite frustrating at times - semi-stable
high latency performance, with maddeningly random alsa timeouts -
terribly unstable low latency performance, with jack losing connection
to alsa around 2 minutes after starting.

with acpi and cpuspeed turned off, rtirq and permissions set,
snd-usb-usx2y module loaded with nrpacks=1 parameter set, and using
the hwX,2 hwdep experimental alsa interface, i've been running at
256x2 (11.6 msec) with zero overruns and no audio glitches for about
10 hours now, and am confident enough in the system to take it on
stage.

acpi was the real dealbreaker. based on google searches it's the same
story on windows.

thanks much for all the archived advice i used to get to this point.
i don't recommend the interface, by the way. far cry from the m-audio
pci stuff i'm accustomed to, where i could install the programs and
leave them running for weeks at a time, and everything just worked.
and i never would've bought the thing had i done enough research to
see it only has RCA outputs. still, getting the thing running stably
is a huge step for me - you've no idea how excited i was to get home
from work and see qjackctl's start button still grayed out.

back to learning ardour. pd at some point.

-- 
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