When the laptop (Dell Vostro 15) wakes from suspend the mouse cursor can be moved with the touchpad at the login/lock screen, but once back in to the session does not move it. At this point plugging in an external USB mouse works fine. The touchpad works after a reboot, until suspending.
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1 Answer
Reloading the touchpad / mouse driver after resuming from suspend works in most cases.
Run sudo -H gedit /lib/systemd/system-sleep/touchpad
Copy and paste in these lines:
#!/bin/bash
if [[ $1 == post ]]; then
modprobe -r psmouse
modprobe psmouse
fi
Save the file and exit.
Now make it a program by setting the execution bit:
chmod a+x /lib/systemd/system-sleep/touchpad
You will need to reboot for changes to take effect.
answered Oct 13, 2018 at 21:23
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This didn't help (I'd actually tried before manually rmmod and modprobing psmouse). But now, after another restart, it is working again. I believe some update was installed as well, so perhaps some transient kernel issue that was fixed? Commented Oct 14, 2018 at 7:11
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This issue went away after an update. Not sure of its actual cause. Commented Oct 14, 2018 at 7:16
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I should have put into the answer a reboot may be necessary for changes to take effect but I didn't fully research that part of the answer. Let me know if it is still broken after next suspend. Thanks. Commented Oct 14, 2018 at 15:48
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2This solution did not work for me. Ubuntu 18.04 with "SYNA8004:00 06CB:CD8B Touchpad", Lenovo X1 Carbon Gen 7. I get snappy touchpad behavior after resuming from hibernation.– SaTaCommented Sep 27, 2019 at 3:30
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@SaTa You need to reboot for changes to take effect. Also hibernation often brings a host of new problems not found with suspend/resume. Commented Sep 27, 2019 at 10:35