Touchpad stops working after suspend on a Clevo M55N

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.

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/.

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.

for me on xenial xubuntu xfce and Elantech touchpad this was not working:

modprobe -rv psmouse ;; modprobe -v psmouse proto=imps ;;

sudo gedit /etc/pm/sleep.d/0000trackpad

#!/bin/sh
  case "$1" in
  suspend|hibernate)
     modprobe -rv psmouse ;;
  resume|thaw)
    modprobe -v psmouse proto=imps ;;
esac

dmesg | grep -i touch
[    1.876547] input: ETPS/2 Elantech Touchpad as /devices/platform/i8042/serio1/input/input5
[ 1077.028151] psmouse serio1: Touchpad at isa0060/serio1/input0 lost sync at byte 6

grep -B 5 mouse /proc/bus/input/devices 
   I: Bus=0011 Vendor=0002 Product=000e Version=0000
   N: Name="ETPS/2 Elantech Touchpad"
   P: Phys=isa0060/serio1/input0
   S: Sysfs=/devices/platform/i8042/serio1/input/input5
   U: Uniq=
   H: Handlers=mouse0 event5 
<user>@<xenial>:~$ xinput
   ⎡ Virtual core pointer                       id=2    [master pointer  (3)]
   ⎜   ↳ Virtual core XTEST pointer                 id=4    [slave  pointer  (2)]
   ⎜   ↳ ETPS/2 Elantech Touchpad                   id=11   [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)]
       ↳ WebCam SC-0311139N                         id=9    [slave  keyboard (3)]
       ↳ AT Translated Set 2 keyboard               id=10   [slave  keyboard (3)]

Problem described here

Only Strg + Alt + F1 and back Alt + F7 brings me the cursor back.

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.

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.