Keyboard and mouse/touchpad lock up waking up from suspend mode

Question

I'm using Ubuntu 22.04.4 LTS. When I wake up the PC from the suspend mode and start typing my password, password box is full of dots (like keyboard is stuck and fills the box with letters) as soon as I hit the first key on my keyboard. When it happens, I can do nothing but putting the computer back to suspend mode via touchscreen (thankfully my notebook has touchscreen function) and wake it up again. Problem only happens if I start typing my password immediately when the login screen appears. If I wait few seconds before typing I have no problems at all.

Wondering why it happens and how to solve it.

Answer 1

I can't duplicate the problem but others have had a similar problem. Check this Arch Linux thread:

• Mouse and keyboard delay or system freeze on boot with DM.

Although a solution isn't posted, steps to find a solution are listed. The most important step is to check the journalctl for error messages.

To show error messages before sign-on, follow the answer in this Ask Ubuntu question:

• https://askubuntu.com/questions/1024648/how-can-i-read-and-capture-error-messages-that-appear-on-the-screen-before-login

Answer 2

Try to disable the switch user function. enter link description here

That usualy solves problems like that.