On Tue, Jul 13, 2021 at 10:30:48PM +0200, Hylke Hellinga wrote: > Dear Alan, > > Thank you. > > I've just created the usbmon trace. It's fairly large due to it taking > quite some time before the bug appears. > I'm guessing it also has a lot of output due to the mouse moving x and > y and me typing? > > It can be viewed here: > https://gist.github.com/Simbaclaws/70014d584d96dc0ac4920dffb1996583 > > Sorry for the somewhat late reply. Was helping someone on irc. > > Please let me know if this can help debug the issue. The usbmon trace contains a lot of -71 errors. In general, errors of this type arise because the device's firmware has crashed (apparently not the case here, since the mouse continued to work okay), or because of interference caused by a bad cable or something similar. Perhaps caused by the KVM switch itself. The fact that the log says the mouse connected at full speed rather than high speed also indicates some sort of signal-related problem. Have you tried doing an experiment where you plug the mouse directly into the computer rather than going through the switch? Alan Stern
