Bug 193821
| Summary: | USB Bluetooth stops working after "usb 2-7: reset full-speed USB device number 5 using xhci_hcd" | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | fiskare (mail) |
| Component: | Bluetooth | Assignee: | linux-bluetooth (linux-bluetooth) |
| Status: | NEW --- | ||
| Severity: | normal | ||
| Priority: | P1 | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Kernel Version: | Opensuse Tumbleweed 4.9.6-1-default #1 SMP PREEMPT x86_64 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: | dmesg with 'echo "module btusb +mfp" > /sys/kernel/debug/dynamic_debug/control' | ||
I already reported the bug to bugzilla.suse.com, but I haven't got an answer in two weeks https://bugzilla.suse.com/show_bug.cgi?id=1020664 |
Created attachment 253871 [details] 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