Comment # 2 on bug 1195238 from Takashi Iwai

Could you verify whether the old kernels work?  You can try the last 5.14.x TW
kernel in OBS home:tiwai:kernel:5.14 (and home:tiwai:kernel:5.15 for 5.15).
Also OBS Kernel:SLE15-SP4 contains the Leap 15.4 kernel that is also based on
5.14.x.