On Wednesday 23 March 2005 03:32, Steve Fosdick wrote:
Frustrated that my laptop doesn't have line-in and
that the mic-in is not
very useful (unbalanced, no phantom power) I have finally invested in an
external USB interface, the Tascam US-122.
Unfortunately this doesn't appear to work with my laptop though it works
mostly-ok with my desktop.
Mine works good with desktop and laptop. :-P
The two applications I have tried to use are
jack+ardour and the standard
ALSA aplay. ALSA aplay does work for a while but can stall part way
through playing and then never seems to recover eventually reporting I/O
error.
Jackd will sometimes run for a few seconds without error but soon starts
reporting errors of the form:
delay of 24606.000 usecs exceeds estimated spare time of 23134.000; restart
... delay of 24779.000 usecs exceeds estimated spare time of 23134.000;
restart ... delay of 24781.000 usecs exceeds estimated spare time of
23134.000; restart ... delay of 24741.000 usecs exceeds estimated spare
time of 23134.000; restart ... jackd watchdog: timeout - killing jackd
Yeah, I got this too, sometime back.
I have read the thread on this list "USX2Y rawusb
mode" and have therefore
already tried turning off ACPI and running with nrpacks=4. Turning off
ACPI seemed to make little difference though it did change the interrupt
assignments, while nrpacks=4 seems to have improved things slighly though
not reliable enough to use. Changing the -p option seems to change the
values of time reported above but that's about all. The problem is just
the same for either 44100 or 48000 sample rate.
Did you set the jack-options according to nrpacks=4?
I once tried playing with this option but dropped it as it brought no
advantage for me.
Mine currently works with several different settings, I have attached my
qjackctlrc...
I have tried kernels 2.6.10, 2.6.11, 2.6.11.4 and
2.6.11.5. The 2.6.11
series seems to be closer to working. Anyone please have ideas of what to
try next or what info I could gather than would be useful?
I am using 2.6.11 successfully...
By comparison it works a treat on my desktop PC apart
from one from little
niggle (which also affects the laptop). Sometimes when unplugging the
US-122 the keyboard on the PC locks up. At this point it is usually still
possible to log in over the network and shut the PC down which is
sometimes sucessful and sometimes it hangs somewhere in the shutdown
sequence.
I get this error occasionally on my desktop-system. But as this has two
soundcards I don't need a third very often...
From my laptop,
/proc/interrupts with ACPI on:
CPU0
0: 26742183 XT-PIC timer
1: 7401 XT-PIC i8042
2: 0 XT-PIC cascade
5: 1148549 XT-PIC VIA686A, ohci1394, VIA82XX-MODEM
8: 1 XT-PIC rtc
9: 4 XT-PIC acpi
10: 1218664 XT-PIC eth0, uhci_hcd, uhci_hcd
This could be a problem, I would focus on splitting these up. (And perhaps
disable network while recording.)
Perhaps this helps...
Arnold
--
There is a theory which states that if ever anyone discovers exactly what the
Universe is for and why it is here, it will instantly disappear and be
replaced by something even more bizarre and inexplicable.
There is another theory which states that this has already happened.
-- Douglas Adams, The Restaurant at the End of the Universe