Package: src:linux Followup-For: Bug #1153143 Same for UMC202HD.
- Debian 13, sway, pipewire, pavucontrol; worked find before upgrading to 6.12.115+deb13.1-amd64 (most probably Linux 6.12.111+deb13-amd64); no manual intervention was needed. - After kernel upgrade: - device listed on pavucontrol, but no playback (or plays without sound) - all usual workarounds tried (restarting services, reconnecting, rebooting, trying out different USB ports, etc.) - works fine if 6.12.111+deb13-amd64 is booted on the same laptop - Works fine on kernel built from the latest source (7.4.0-rc1+), despite containing recent patches related to Behringer devices: commit e88f4749c02fba11c62e880c29d35d254b7e69d0 Author: Takashi Iwai <[email protected]> Date: Mon Oct 19 12:23:38 2026 +0200 ALSA: usb-audio: Avoid applying boot quirk for Behringer UMC204HD commit b5c4823cf3e49b3419a3bc8c6715101e1ac6cc59 Author: Takashi Iwai <[email protected]> Date: Tue Sep 29 14:29:25 2026 +0200 ALSA: usb-audio: Apply boot quirk for Behringer models generically commit 45b5beb60bf7bd41c55ef17f6f2d28b351fad6c0 Author: Sebastian ... Date: Sat Sep 5 14:11:12 2026 +0200 ALSA: usb-audio: Add boot quirk for Behringer CM1A One of the above patches adds a generic quirk for all Behringer devices, and a following patch removes the same workaround for UMC204HD and UMC404HD, but not for UMC202HD. But even with these commits, the kernel built from the upstream source works fine, while I don't think these patches are even part of 6.12.115+deb13.1-amd64 (based on a quick diff of the debian sources; I could be wrong). -- Nandakumar Edamana https://nandakumar.org/
