https://bugzilla.kernel.org/show_bug.cgi?id=210801 --- Comment #2 from Alan Stern (stern@xxxxxxxxxxxxxxxxxxx) --- There are two things you can do to help solve the problem. The first is to use git bisect to find the kernel change which caused the error messages to start appearing. The second is to capture some usbmon traces (see Documentation/usb/usbmon.rst in the kernel source). Comparing a trace from the current kernel with a trace from an earlier kernel where the errors don't appear might provide some clues. -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.