Audio interface causing "xhci_hcd ... WARN: buffer overrun event" messages

[Bob Ham <rah@settrans.net>]

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Hi there,

I'm trying to get an Arturia AudioFuse 16Rig audio interface working
under Linux.  During loading of snd-usb-audio and when trying to play
through the interface, the kernel spews a whole bunch of messages like so:

[ 1667.208402] xhci_hcd 0000:00:14.0: WARN: buffer overrun event for
slot 3 ep 2 on endpoint
[ 1667.216585] xhci_hcd 0000:00:14.0: WARN: buffer overrun event for
slot 3 ep 2 on endpoint
[ 1667.224778] xhci_hcd 0000:00:14.0: WARN: buffer overrun event for
slot 3 ep 2 on endpoint

When trying to play, there is nothing from the audio outputs on the
interface and aplay reports:

$ aplay -D hw:CARD=Audio,DEV=0 output.wav
Playing WAVE 'output.wav' : Signed 32 bit Little Endian, Rate 48000 Hz,
Channels 10
aplay: pcm_write:2127: write error: Input/output error

I don't really know anything about XHCI so I was wondering if someone
could advise me on what might be causing the error messages?


I followed some instructions from this list⁰ on enabling logs and traces
which might help shed some light.  Here is the kernel log (which
includes some debugging statements I added):

  https://settrans.net/~rah/misc/xhci-kernel-log.txt

And here is the contents of /sys/kernel/debug/tracing/trace which
unfortunately looks empty, I'm wondering if the instructions I followed
are still valid?

  https://settrans.net/~rah/misc/xhci-kernel-trace.txt


Thanks,

Bob Ham


⁰https://lore.kernel.org/linux-usb/?t=20190409143433


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