I tried updating my Fedora 34 kernel from-
5.11.17-300
to
5.12.14-300
and it no longer recognises my XMOS USB device:
$ cat /proc/asound/cards
0 [ALSA ]: bcm2835_alsa - bcm2835 ALSA bcm2835 ALSA 1 [vc4hdmi0 ]: vc4-hdmi - vc4-hdmi-0 vc4-hdmi-0 2 [vc4hdmi1 ]: vc4-hdmi - vc4-hdmi-1 vc4-hdmi-1 4 [H20 ]: USB-Audio - HU300 HiFi 2.0 Yunyue Audio HU300 HiFi 2.0 at usb-0000:01:00.0-1.3, high speed
So, device number 4 is missing with the 5.12.14-300 kernel.
Given that the rpi4 is not yet supported, whom should I tell about this apparent bug, please?
:D