On Tue, 03 Jan 2023 16:14:57 +0100, Michael Ralston wrote:
On Wed, 4 Jan 2023 at 02:13, Takashi Iwai tiwai@suse.de wrote:
That's weird. Is snd_usb_audio driver bound with the device at all? That is, does it appear in /proc/asound/cards?
Yes, it's there.
0 [V49 ]: USB-Audio - V49 Alesis V49 at usb-0000:08:00.1-3, full speed 1 [NVidia ]: HDA-Intel - HDA NVidia HDA NVidia at 0xfc080000 irq 154 2 [U192k ]: USB-Audio - UMC404HD 192k BEHRINGER UMC404HD 192k at usb-0000:08:00.1-4, high speed 3 [Generic ]: HDA-Intel - HD-Audio Generic HD-Audio Generic at 0xfca00000 irq 156
Hrm... Try to reload snd_usb_audio module with the dyndbg=+p option, e.g.
# modprobe -r snd-usb-audio # modprobe snd_usb_audio dyndbg=+p
Or you can try to put your own debug printk(); we need to make sure whether it's really the right code you're testing at first.
Takashi