Wakes from suspend immediately when bluetooth device disconnected

My laptop which used to suspend OK most of the time started having problems last week. Perhaps due to a faulty cable. I created a bash script which suspends and resumes faster than before and more reliably.

Use this command:

sudo -H gedit /lib/systemd/system-sleep/custom-xhci_hcd

Copy and paste the following into the editor:

#!/bin/bash

# Original script was using /bin/sh but shellcheck reporting warnings.

# NAME: custom-xhci_hcd
# PATH: /lib/systemd/system-sleep
# CALL: Called from SystemD automatically
# DESC: Suspend broken for USB3.0 as of Oct 25/2018 various kernels all at once

# DATE: Oct 28 2018.

# NOTE: From comment #61 at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/522998

TMPLIST=/tmp/xhci-dev-list

# Original script was: case "${1}" in hibernate|suspend)

case $1/$2 in
  pre/*)
    echo "$0: Going to $2..."
    echo -n '' > $TMPLIST
          for i in `ls /sys/bus/pci/drivers/xhci_hcd/ | egrep '[0-9a-z]+\:[0-9a-z]+\:.*$'`; do
              # Unbind xhci_hcd for first device XXXX:XX:XX.X:
               echo -n "$i" | tee /sys/bus/pci/drivers/xhci_hcd/unbind
           echo "$i" >> $TMPLIST
          done
        ;;
  post/*)
    echo "$0: Waking up from $2..."
    for i in `cat $TMPLIST`; do
              # Bind xhci_hcd for first device XXXX:XX:XX.X:
              echo -n "$i" | tee /sys/bus/pci/drivers/xhci_hcd/bind
    done
    rm $TMPLIST
        ;;
esac

Then save the file and exit gedit.

Mark the script as executable using:

sudo chmod a+x /lib/systemd/system-sleep/custom-xhci_hcd

Now your suspend/resume problems should go away. If not hopefully someone else posts their solution.

Could be kernel bug 200039. Removing the btusb module would help in that case (rmmod btusb). If that is the case you could indeed load/unload the kernel module via a sleep script, much as the one posted here.