====== USB ======


=====  HC died; cleaning up =====

<code>
[936017.115917] usb 5-2.2.1.3: USB disconnect, device number 31
[936022.267823] xhci_hcd 0000:07:00.3: xHCI host not responding to stop endpoint command
[936022.283651] xhci_hcd 0000:07:00.3: xHCI host controller not responding, assume dead
[936022.283681] xhci_hcd 0000:07:00.3: HC died; cleaning up
[936022.283722] usb 5-2: USB disconnect, device number 2
[936022.283728] usb 5-2.2: USB disconnect, device number 3
[936022.283732] usb 5-2.2.1: USB disconnect, device number 15
[936022.283864] usb 6-2: USB disconnect, device number 2
[936022.284557] usb 5-2.2.1.2: USB disconnect, device number 29
[936022.285014] usb 5-2.2.1.4: USB disconnect, device number 37
</code>

[[https://bbs.archlinux.org/viewtopic.php?id=236536]]


<code bash>
echo -n "0000:07:00.3" | tee /sys/bus/pci/drivers/xhci_hcd/unbind 
sleep 1
echo -n "0000:07:00.3" | tee /sys/bus/pci/drivers/xhci_hcd/bind 
</code>