New: USB Bluetooth stops working after "usb 2-7: reset full-speed USB device number 5 using xhci_hcd"
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: [email protected]
Reporter: [email protected]
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
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[Bug 193821] USB Bluetooth stops working after "usb 2-7: reset full-speed USB device number 5 using xhci_hcd"
https://bugzilla.kernel.org/show_bug.cgi?id=193821
--- Comment #1 from fiskare <[email protected]> ---
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
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