https://bugzilla.kernel.org/show_bug.cgi?id=206471 Bug ID: 206471 Summary: Connecting Yi 4K+ to Tthinkpad T495, "usb usb2-port3: Cannot enable. Maybe the USB cable is bad?" Product: Drivers Version: 2.5 Kernel Version: 5.4.18-050418-lowlatency #202002051737 SMP PREEMPT Wed Feb 5 22:52:51 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux Hardware: x86-64 OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: USB Assignee: drivers_usb@xxxxxxxxxxxxxxxxxxxxxx Reporter: lucas.vacek@xxxxxxxxx Regression: No Created attachment 287255 --> https://bugzilla.kernel.org/attachment.cgi?id=287255&action=edit Output of cat /sys/kernel/debug/usb/usbmon/2u I can reproduce the same problem on 5.5.2 and 5.4.3 as well. When connecting Yi 4K+ camera to USB port on Thinkpad T495 I get following error: [ 6376.553655] usb usb2-port3: Cannot enable. Maybe the USB cable is bad? [ 6377.441641] usb usb2-port3: Cannot enable. Maybe the USB cable is bad? [ 6377.441714] usb usb2-port3: attempt power cycle [ 6378.641657] usb usb2-port3: Cannot enable. Maybe the USB cable is bad? [ 6379.529678] usb usb2-port3: Cannot enable. Maybe the USB cable is bad? [ 6379.529752] usb usb2-port3: unable to enumerate USB device [ 6408.857408] usb usb2-port3: Cannot enable. Maybe the USB cable is bad? [ 6409.745778] usb usb2-port3: Cannot enable. Maybe the USB cable is bad? [ 6409.745843] usb usb2-port3: attempt power cycle [ 6410.945496] usb usb2-port3: Cannot enable. Maybe the USB cable is bad? [ 6411.833866] usb usb2-port3: Cannot enable. Maybe the USB cable is bad? [ 6411.833940] usb usb2-port3: unable to enumerate USB device [ 6598.002122] usb usb2-port3: Cannot enable. Maybe the USB cable is bad? [ 6598.890212] usb usb2-port3: Cannot enable. Maybe the USB cable is bad? [ 6598.890275] usb usb2-port3: attempt power cycle [ 6600.090213] usb usb2-port3: Cannot enable. Maybe the USB cable is bad? [ 6600.978772] usb usb2-port3: Cannot enable. Maybe the USB cable is bad? [ 6600.978825] usb usb2-port3: unable to enumerate USB device There is no problem when connecting other devices to the USB ports, there is no problem when I connect the camera to USB ports on dock station. If I try to connect the camera to the laptop via USB-C nothing happens. The camera works fine when connected to other PCs too (Thinkpad T420 running Ubuntu 14.04 and another PC with Windows 7). I am attaching output of `cat /sys/kernel/debug/usb/usbmon/2u` when connecting the camera ot the USB port (file "usbmon_fail"). Hope this helps, I'm happy to provide further assistance in debugging. -- You are receiving this mail because: You are watching the assignee of the bug.
