I know this question has been asked before, but I want to see if anyone has a better solution than the one I have. I am using a Thinkpad 440p, previously with Ubuntu 18.04, currently with Ubuntu Mate 18.04. I've had this issue with elementary os and mint. When my computer suspends and I start it up again, the scrolling no longer works. The solution I found was to modprobe -r psmouse and modprobe psmouse. This fixes it instantly and I wrote a script to do it but I have to run the script everytime I resume from suspend. I was just wondering if anyone has a permanent solution.
After some digging I used a combination of your solution and this answer.
On Ubuntu 18.04, I placed the following script in
/lib/systemd/system-sleep/psmouse-refresh. This reloads the module after suspend.
#!/bin/bash # $1 is the state (pre or post)-sleep if [[ $1 == post ]]; then modprobe -r psmouse modprobe psmouse fi
make it executable
chmod +x /lib/systemd/system-sleep/psmouse-refresh
The above worked for me using...
modprobe -r usbhid modprobe usbhid
This should be the accepted answer, just with caution that just removing
usbhidwould disable all externally (usb) connected keyboards. That's why using && is important Apr 18, 2021 at 9:52
I tried a few workarounds. Following worked for me.
/etc/default/grub parameters as:
GRUB_CMDLINE_LINUX_DEFAULT="psmouse.synaptics_intertouch=0 quiet splash" GRUB_CMDLINE_LINUX="i8042.reset i8042.nomux i8042.nopnp i8042.noloop"
After this run:
sudo update-grub sudo reboot
For testing the workaround: Put your system to sleep using following command:
sudo systemctl suspend
Turn on the system and verify the mouse scroll wheel if it works.
Thanks a lot for this answer! It solved both the scrolling issue and also the issue described in askubuntu.com/questions/1159957/…– PhotonAug 14, 2021 at 16:37