(In reply to Markus Kolb from comment #22) > The crash problem still exists in Takashi's development kernel. OK, thanks. Have you tested the recent upstream kernel (e.g. 5.7.x) at all? It's find in OBS Kernel:stable repo. http://download.opensuse.org/repositories/Kernel:/stable/standard/ If it moved already to 5.8.x, the latest 5.7.x kernel is found in my kernel archive repo OBS home:tiwai:kernel:5.7, http://download.opensuse.org/repositories/home:/tiwai:/kernel:/5.7/standard/ Ubuntu's bug report mentioned that the bug disappeared after 5.7.x, so this should have been confirmed in our side, too.