https://bugzilla.kernel.org/show_bug.cgi?id=216282 Alan Stern (stern@xxxxxxxxxxxxxxxxxxx) changed: What |Removed |Added ---------------------------------------------------------------------------- CC|stern@xxxxxxxxxxxxxxxxxxx | --- Comment #16 from Alan Stern (stern@xxxxxxxxxxxxxxxxxxx) --- The question is which directory or file on that path is missing. From comment 13, it looks like /sys/kernel/debug/usb should exist. Maybe it doesn't have a usbmon subdirectory because the usbmon module hasn't been loaded. If you do: modprobe usbmon it should create that directory and the 2u file within it. -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.