https://bugzilla.kernel.org/show_bug.cgi?id=212955 --- Comment #1 from Alan Stern (stern@xxxxxxxxxxxxxxxxxxx) --- Something else you can do is to collect and attach a couple of usbmon traces under a 5.12 kernel: a working trace (device attached to a USB-3 port) and a non-working trace (device attached to a USB-2 port). Comparing them might show where the problem is. In addition, before plugging in the device you should enable USB dynamic debugging by doing: echo 'module usbcore =p' >/sys/kernel/debug/dynamic_debug/control and then afterwards attach the relevant parts of the dmesg logs. -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.
