X250 trackpad multi finger gestures not working after Sleep

Solution 1:

I have a workaround, hardly a solution. It's taken from the debian wiki about Synaptics Touchpads. Unloading and reloading the psmouse kernel module fixes the problem for me:

sudo modprobe -r psmouse
sudo modprobe psmouse 

Solution 2:

Here (in Post #44) is another workaround mentioned (works great with my X240 and Ubuntu 18.10):

You need to edit your grub file (sudo nano /etc/default/grub) and change the following line
from GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
to GRUB_CMDLINE_LINUX_DEFAULT="quiet splash psmouse.synaptics_intertouch=0" .

Then you need to update grub (sudo update-grub) and reboot your Computer.