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alsa-project / alsa-lib

The Advanced Linux Sound Architecture (ALSA) - library
GNU Lesser General Public License v2.1
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xone mixer #303

Closed molli1312 closed 1 year ago

molli1312 commented 1 year ago

Having a few problems with the Xone32c though not sure if this is an ALSA issue or general USB stack problem.

It's a USB soundcard that is supposed to have 4 inputs and 4 outputs. It seems to have 2 USB configurations (bNumConfigurations : 0x2). When plugged in, bConfigurationValue is 0x1 and only 2 inputs and 2 outputs show up. Change this value to 0x2 and it shows up (as it should) as 4 inputs and 4 outputs.

I can change the bConfigurationValue with this udev rule, or with a `echo 2

/sys/bus/usb/devices/1-1.4/bConfigurationValue`:

This has all been working OK on Ubuntu 20.04 running kernel 5.4.0-33-generic. However, I just updated to 5.4.0-37-generic and now there is only a single USB configuration (bNumConfigurations : 0x1) and bConfigurationValue can't be changed to 0x2:

perexg commented 1 year ago

This is tracker for the alsa-lib package. The upstream kernel issues are tracked at https://bugzilla.kernel.org (only latest kernels, please). For 5.4.0 - you may discuss your problem with the distribution support. It's really an old kernel.