Meanwhile I've updated to Leap 15.2, however, my kernel still has usbcore.quirks=0bda:8153:gk,0424:5807:gk usbcore.autosuspend=-1 splash=silent set. Since I've set these, the problem did not reoccur. However, my usage pattern has also change since Covid: I'm not traveling much any more. The problem seemed to have been related to docking/undocking and/or suspending the system. So, with this in mind, I'm not even sure the results of my tests will be conclusive - even if I remove usbcore.quirks=0bda:8153:gk,0424:5807:gk usbcore.autosuspend=-1. In any case, today is the last day for me this year, so this will have to wait till January. I'll leave the NEEDINFO set.