Touchpad stops working after suspend on a Clevo M55N

Question

simple problem:

Touchpad stops working after suspend in Ubuntu 11.10. It is an annoying problem as I like to use my touchpad together with my mouse for convenience (unless I must use my touchpad because the mouse isn't available).

Can anyone help?

I also posted a comment under this unsolved question for a similar problem in 10.10: Touchpad stopped working after suspend, never woke up again

Laptop make and model: CLEVO M55N.

xinput list in terminal gives:

⎡ Virtual core pointer                      id=2    [master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer                id=4    [slave  pointer  (2)]
⎜   ↳ Genius 2.4G Wireless Mouse and Keyboard   id=11   [slave  pointer  (2)]
⎜   ↳ ImPS/2 Elantech Touchpad                  id=13   [slave  pointer  (2)]
⎣ Virtual core keyboard                     id=3    [master keyboard (2)]
    ↳ Virtual core XTEST keyboard               id=5    [slave  keyboard (3)]
    ↳ Power Button                              id=6    [slave  keyboard (3)]
    ↳ Video Bus                                 id=7    [slave  keyboard (3)]
    ↳ Power Button                              id=8    [slave  keyboard (3)]
    ↳ Sleep Button                              id=9    [slave  keyboard (3)]
    ↳ Genius 2.4G Wireless Mouse and Keyboard   id=10   [slave  keyboard (3)]
    ↳ AT Translated Set 2 keyboard              id=12   [slave  keyboard (3)]

Thanks beforehand.

Answer 1

I also have this bug on 10.04 (at me same Elantech touchpad)! I create script /etc/pm/sleep.d/66my-sleep-resume (66 - a start priority)

#!/bin/sh
case "${1}" in
        hibernate)
        # nothing   
                ;;
        resume|thaw)
        modprobe -r psmouse && modprobe psmouse
                ;;
esac

and now all works.

Answer 2

Unfortunately, there are a lot of reasons why this could happen. A work-around that helped me in some cases is reloading the kernel module responsible for the mouse events:

sudo modprobe -r psmouse
sudo modprobe psmouse

You should also check if using the Fn-Keys makes any difference.

Answer 3

Try this in terminal after resume:

synclient touchpadoff=0

If it works, you can write a script containing this command, and put the script in /etc/pm/sleep.d/.

Answer 4

The Power Manager (dpkg -L pm-utils) is invoked at the beginning and end of your Suspend/Resume. Read man pm-powersave and man pm-suspend. Also read /usr/share/doc/pm-utils/README{,.debugging}.

Some helpful Power Manager script is probably causing your touchpad problem. Either it's not saving/restoring the touchpad state or not reloading a needed module.

Look at dmesg after a reboot, and try to see how your touchpad is initialized. Compare the output of lsmod both post-boot-pre-suspend (when it works) and post-suspend (when it doesn't). If a module is missing from the latter, you're on your way to a solution.

Another debugging technique is to begin in the post-boot-pre-suspend state, and do:

1. touch /tmp/before-time-date
2. Close the Lid and Suspend.
3. Open the Lid and Resume.
4. Find system logs that have changed since step 1:
   find /var/logs -type f -anewer /tmp/before-time-date
5. Look at the last several-to-many lines of each of these files. I use less, and have my favorite settings in an environment variable, $LESS=-XMersj3. so I can do:
   sudo -v;find /var/logs -type f -anewer /tmp/before-date-time -print | xargs sudo less $LESS
   then use less's G (uppercase ) command to get to the end of each file.

Answer 5

Had a similar problem with my wireless USB mouse/ keyboard (Logitech) on (L)ubuntu 12.04 LTS. Mouse cursor was stuck after pm-suspend. unplugging and re-plugging the USB fixed the issue.

Above workaround, creating a script in /etc/pm/sleep.d, sorta worked. had to change the psmouse to hid_logitech.

With different hardware you will have to change the script accordingly, depending on what kernel modules you will need to reload.

/etc/pm/sleep.d/99_fixmouse

#!/bin/sh

case "${1}" in
  hibernate)
    #nothing
    ;;
  resume|thaw)
    modprobe -r hid_logitech
    modprobe  hid_logitech
    ;;
esac

don't forget to do a chmod +x on the above file.