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I have an ASUS UX330U and I am running Ubuntu 16.04.4 on it with xfce as window manager. Sometimes it happens that after suspend the touchpad is not working. The touchpad is working in the login-screen, but after successfull login, no touchpad. Note that this happens only sometimes.

I have tried modprobe -r psmouse and modprobe psmouse without any success.

This is the output of xinput:

⎡ Virtual core pointer                          id=2    [master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer                id=4    [slave  pointer  (2)]
⎜   ↳ ELAN1200:00 04F3:3022 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)]
    ↳ Asus Wireless Radio Control               id=7    [slave  keyboard (3)]
    ↳ Video Bus                                 id=8    [slave  keyboard (3)]
    ↳ Power Button                              id=9    [slave  keyboard (3)]
    ↳ Sleep Button                              id=10   [slave  keyboard (3)]
    ↳ USB2.0 HD UVC WebCam: USB2.0 HD           id=12   [slave  keyboard (3)]
    ↳ Asus WMI hotkeys                          id=14   [slave  keyboard (3)]
    ↳ AT Translated Set 2 keyboard              id=15   [slave  keyboard (3)]

The kernel I am using is, according to the output of uname -r:

4.13.0-45-generic

According to this question, the output of dmesg | grep pnp might be helpful:

[    0.220840] pnp: PnP ACPI init
[    0.221221] pnp 00:01: Plug and Play ACPI device, IDs PNP0b00 (active)
[    0.221404] pnp 00:03: Plug and Play ACPI device, IDs ATK3001 PNP030b (active)
[    0.224220] pnp: PnP ACPI: found 8 devices
[    0.956259] i8042: PNP: PS/2 appears to have AUX port disabled, if this is incorrect please boot with i8042.nopnp

My questions are:

  1. Why does the touchpad stops working sometimes after returning from suspend ?
  2. Why is the touchpad still working in the login screen (in the cases where it is not working after logging in)?

And, of course, I would be happy if someone would tell me how to fix this.

Update 1

The output of apt policy linux-generic-hwe-16.04 is as follows:

linux-generic-hwe-16.04:
  Installed: 4.13.0.45.64
  Candidate: 4.13.0.45.64
  Version table:
 *** 4.13.0.45.64 500
        500 http://de.archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages
        500 http://security.ubuntu.com/ubuntu xenial-security/main amd64 Packages
        100 /var/lib/dpkg/status

Update 2

Since updating to kernel 4.15, I have not experienced the error so far, seems like this has indeed solved the problem (as suggested in the comments).

Alf
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  • Maybe it will work better with the 4.15 kernel. If you simply sudo apt update && sudo apt upgrade it will be installed. Today they uploaded the new major version for 16.04. If you are using a mirror, the repo will be synced later. – Pilot6 Jul 05 '18 at 16:47
  • @Pilot6 I don't get the new kernel version (yet...?), I'll probably have to wait, I guess – Alf Jul 05 '18 at 19:52
  • What does apt policy linux-generic-hwe-1604 show? – Pilot6 Jul 05 '18 at 19:55
  • @Pilot6 updated the question – Alf Jul 05 '18 at 19:58
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    Some people already have the 4.15. It probably didn't reach the German mirror yet. You can switch to the main server to get it. – Pilot6 Jul 05 '18 at 20:00
  • @Pilot6 thanks for the suggestions, I'll wait until tomorrow (some work needs to be done now) and then report if I experience any changes – Alf Jul 05 '18 at 20:05

2 Answers2

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I also faced a similar problem. I noticed that it works after waiting for a about 10 secs or else by locking the screen again and reentering password. I know there exists a better method but this works for me.

Arka Mitra
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  • oh, interesting, so your approach is: (1) log in, touchpad is not working (2) lock screen (3) wait for 10 sec (4) log in, touchpad is now working.

    I will try that the next time and report!

     – Alf Jul 05 '18 at 19:54
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After long scouring forums and blogs, i've finally came to a solution, at least on my Asus box laptop.

With your favorite editor (vim, nano, etc.) open the grub file: sudo vim /etc/default/grub

Add psmouse.proto=bare to the line GRUB_CMDLINE_LINUX_DEFAULT as

GRUB_CMDLINE_LINUX_DEFAULT="psmouse.proto=bare quiet splash" then reflect these changes:

sudo update-grub

and finally reboot.

Found here

Other relevant refs that I hope will help other desperate souls in their search:

petobens
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