Daniel James wrote:
> Hi Dave,
>
>> The mic input for the HDA produces only howling static, no matter
>> if the mixer is set to dock, external, or internal mic. IIRC there's
>> a switch for this chipset that alters the function on the hardware
>> input jack
>
> I heard of that with HDA's, the problem is to do with the analogue
> loopback in the mixer I think.
Hi Daniel,
Alas, there is no loopback channel in the mixer. More research needed....
>
>> My UA25 can't seem to perform reliably with less than 23 msecs
>> latency. I've tried what I think has been every combination of
>> numbers, but it will produce an xrun stream instantly once I bring
>> the settings to a lower latency.
>
> I'd suggest running it at 48000 Hz with 3 periods per buffer as the
> benchmark. USB devices seem to like that best.
>
Thanks, Daniel, that seems to work a charm. I'm now at 8 msecs latency
with 0 xruns with these settings in Jack:
-R -n128 -r48000 -p3
Timeout is 1000, max ports is 128, priority is 70. Very nice now. :)
Btw, there was one other piece of bad news I forgot to report.
Apparently Hardy does the same thing as Intrepid when it comes to hal
polling. I had to run these commands to disable the polling every 2 seconds:
hal-disable-polling --device /dev/sdb
hal-disable-polling --device /dev/scd0
No more polling. If you see your hd light flashing every6 2 seconds,
check with htop and see if HAL is doing its thing.
Best,
dp
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