Hi Jean, On Wed, Oct 23, 2019 at 03:18:59PM +0200, Jean Delvare wrote: > Hi all, > > When my Logitech C270 webcam is plugged in, my kernel log gets filled > with this message: > > usb 3-4.1: reset high-speed USB device number 4 using xhci_hcd > > every 5 seconds. I have the same problem on 3 different Intel-based > computers (different generations), using 2 different webcams, same > brand "same model". > > Is Logitech doing crappy hardware these days, or are we doing something > wrong? Is there any way to know the reason that triggers the reset? Is this before or after the uvcvideo driver gets involved ? One easy way to check is to move the uvcvideo.ko module out of the way so that it doesn't get loaded automatically (or just blacklist it in /etc/modprobe.d/) and then plug the camera. > I would be more than happy to provide any relevant debugging > information if anyone is able to make it stop. As it stands, I must > plug my webcam before using it and unplug it as soon as I'm done, which > isn't exactly convenient. -- Regards, Laurent Pinchart
