From: bugzilla-daemon@bugzilla.kernel.org
To: linux-bluetooth@vger.kernel.org
Subject: [Bug 193821] New: USB Bluetooth stops working after "usb 2-7: reset full-speed USB device number 5 using xhci_hcd"
Date: Thu, 02 Feb 2017 09:57:44 +0000 [thread overview]
Message-ID: <bug-193821-62941@https.bugzilla.kernel.org/> (raw)
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@vger.kernel.org
Reporter: mail@felixfischer.org
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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next reply other threads:[~2017-02-02 9:57 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-02 9:57 bugzilla-daemon [this message]
2017-02-02 10:01 ` [Bug 193821] USB Bluetooth stops working after "usb 2-7: reset full-speed USB device number 5 using xhci_hcd" bugzilla-daemon
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