Hi all,
I have a super cheap C-Media USB Headphone Set based sound card (it's all over ebay as a guitar-link).
It isn't awful quality wise (I was expecting worse, although it did require a bit of soldering to get it working at all..), so I'm interested in getting it working well, however when I run duplex jackd I have a problem:
With -p64 -n3, approx every minute the recorded audio gets corrupted for about 15 seconds, then it sorts itself out for another minute. I've uploaded an example of the problem with a sine wave input here:
If I change to -p128 -n3 it happens approx every 2 minutes, and it doesn't happen in input only mode from what I can tell.
Has anyone got any thoughts?
Thank you
Pete
Linux version 4.4.0-38-generic (buildd@lgw01-17) (gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.2) ) #57-Ubuntu SMP Tue Sep 6 15:41:41 UTC 2016
/usr/bin/jackd -dalsa -dhw:Set,0 -r48000 -p64 -n3 -s -C -i1
jackd -v
jackdmp 1.9.11
cat /proc/asound/cards
0 [MID ]: HDA-Intel - HDA Intel MID
HDA Intel MID at 0xd7820000 irq 31
1 [NVidia ]: HDA-Intel - HDA NVidia
HDA NVidia at 0xd1000000 irq 16
2 [Set ]: USB-Audio - C-Media USB Headphone Set
C-Media USB Headphone Set at usb-0000:00:1d.0-1.5, full speed
cat /proc/asound/card2/usbbus
002/012
cat /proc/asound/card2/usbid
08bb:2902
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