@devil: Thanks for the new testbuild!
First, my external sound card seemed to work even after a reboot, but after a few reboots it failed again.
I suspected a hardware-issue, but it works flawlessly on an Ubuntu-installation on another partition of the same box. Too bad. It fails with pulseaudio and pipewire.
Bus 006 Device 010: ID 0499:172f Yamaha Corp. Steinberg UR22C
I've even installed the newest firmware of the external soundcard, but without success.
[ 43.901569] pulseaudio[2885]: segfault at fffffffffffffff8 ip 00007f66e5a310d7 sp 00007ffe48bcf1e0 error 5 in libasound.so.2.0.0[7f66e5a23000+8d000]
[ 44.516116] pulseaudio[4859]: segfault at 50 ip 0000000000000050 sp 00007ffe847e5928 error 14 in pulseaudio[55aaaf7bf000+5000]
[ 45.252028] pulseaudio[4863]: segfault at 1cc ip 00007f88daecbcba sp 00007fff33024050 error 4 in libasound.so.2.0.0[7f88daea6000+8d000]
[ 45.987212] pulseaudio[4867]: segfault at 1cc ip 00007f1be9a7ccba sp 00007fff32a7aff0 error 4 in libasound.so.2.0.0[7f1be9a57000+8d000]
[ 46.756049] pulseaudio[4871]: segfault at 1cc ip 00007fb31de09cba sp 00007fff62914d50 error 4 in libasound.so.2.0.0[7fb31dde4000+8d000]
[ 47.491113] pulseaudio[4875]: segfault at 50 ip 0000000000000050 sp 00007ffd5e81c8c8 error 14 in pulseaudio[55ccb7ec3000+5000]
There are more error messages, but no more kernel oops:
dmesg | grep -i "error\|warn\|fail\oops"
[ 1.173228] usb 4-1: device descriptor read/64, error -71
[ 1.402268] usb 4-1: device descriptor read/64, error -71
[ 1.526313] iwlwifi 0000:03:00.0: Direct firmware load for iwlwifi-cc-a0-63.ucode failed with error -2
[ 1.741295] usb 4-1: device descriptor read/64, error -71
[ 1.971206] usb 4-1: device descriptor read/64, error -71
[ 2.874225] usb 4-1: device not accepting address 4, error -71
[ 3.401209] usb 4-1: device not accepting address 5, error -71
lsusb
Bus 007 Device 002: ID 17ef:3072 Lenovo USB3.0 Hub
Bus 007 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 006 Device 004: ID 8087:0029 Intel Corp. AX200 Bluetooth
Bus 006 Device 003: ID 06cb:00bd Synaptics, Inc. Prometheus MIS Touch Fingerprint Reader
Bus 006 Device 009: ID 17ef:306f Lenovo ThinkPad Dock USB Audio
Bus 006 Device 010: ID 0499:172f Yamaha Corp. Steinberg UR22C
Bus 006 Device 008: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 006 Device 007: ID 17ef:3073 Lenovo
Bus 006 Device 006: ID 045e:00db Microsoft Corp. Natural Ergonomic Keyboard 4000 V1.0
Bus 006 Device 005: ID 17ef:3078 Lenovo USB Billboard
Bus 006 Device 002: ID 17ef:3073 Lenovo USB2.0 Hub
Bus 006 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 004 Device 006: ID 058f:9540 Alcor Micro Corp. AU9540 Smartcard Reader
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 002: ID 04f2:b6d0 Chicony Electronics Co., Ltd Integrated Camera
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub