https://bugzilla.kernel.org/show_bug.cgi?id=193821 Bug ID: 193821 Summary: USB Bluetooth stops working after "usb 2-7: reset full-speed USB device number 5 using xhci_hcd" Product: Drivers Version: 2.5 Kernel Version: Opensuse Tumbleweed 4.9.6-1-default #1 SMP PREEMPT x86_64 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Bluetooth Assignee: linux-bluetooth@xxxxxxxxxxxxxxx Reporter: mail@xxxxxxxxxxxxxxxx Regression: No Created attachment 253871 --> https://bugzilla.kernel.org/attachment.cgi?id=253871&action=edit dmesg with 'echo "module btusb +mfp" > /sys/kernel/debug/dynamic_debug/control' Every time usb gets reset the bluetooth device stops working dmesg: [19352.497648] usb 2-7: reset full-speed USB device number 5 using xhci_hcd [19357.757569] Bluetooth: hci0 command 0x0804 tx timeout Most of the time i can reset and fix this with and bluetooth works till next usb reset. # modprobe -r btusb && modprobe btusb Sometimes this doesn't help (I get the same timeout again). Then this ususally helps: # echo -n "0000:00:14.0" | tee /sys/bus/pci/drivers/xhci_hcd/unbind && sleep 2 && echo -n "0000:00:14.0" | tee /sys/bus/pci/drivers/xhci_hcd/bind" Then bluetooth works again till the next usb reset. I don't know why the usb reset happens in the first place. Hardware: Thinkpad T440s (Intel Core i5-4200U) In the attached dmesg output the first reset with 'echo "module btusb +mfp" > /sys/kernel/debug/dynamic_debug/control' enabled happens at [ 5507.237892] usb 2-7: reset full-speed USB device number 5 using xhci_hcd -- You are receiving this mail because: You are the assignee for the bug. -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
