20.04 Mouse click and keyboard unresponsive

Question

Before logging in, I can move the mouse to top right and select power off or reboot. But after logging in, no click, either right or left, is effective.

The keyboard does not accept input after logging in, except for Ctrl+Alt+F3.

I can get to a terminal via Ctrl+Alt+F3 to issue commands.

Any suggestions on what I might try to fix this issue? I am lost.

See whether it is due to the account by creating a new account and see if this issue persists in a fresh account. — vanadium, Jul 25 '20 at 06:28
Check here: https://askubuntu.com/questions/1033767/keyboard-not-working-after-update-to-18-04 — vanadium, Jul 25 '20 at 09:56
And eventually also here: https://stackoverflow.com/questions/60105862/laptop-keyboard-not-working-properly-ubuntu-18-04 — vanadium, Jul 25 '20 at 09:56
sudo apt-get install xserver-xorg-input-all at CTRL-ALT-F3 did not change behavior — user2443507, Jul 25 '20 at 17:19
I also did this same command after booting to root from grub - problem not fixed — user2443507, Jul 25 '20 at 17:21
Yes, I tried all of the above but no luck. I was desperate and re-installed the OS. — user2443507, Nov 08 '20 at 19:48

score 2 · Answer 1 · answered Oct 24 '20 at 15:52

2

Replace the screen saver

I experienced something similar on Xubuntu LTS 20.04 with the keys of my Logitech K400 Plus wireless touch keyboard becoming unresponsive after a while except for console switching with Ctrl+Alt+F1..F6.

As it turned out, the buggy xfce4-screensaver was kicking in. I replaced it with the more reliable xscreensaver.

$ sudo apt remove xfce4-screensaver
$ sudo apt install xscreensaver

I would suggest replacing your current screensaver with xscreensaver.

answered Oct 24 '20 at 15:52

Serge Stroobandt

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Thank you Serge, that was exactly my problem too. So I removed xfce4-screensaver. Why would I not install xscreensaver? Anyhow, I can confirm that this is a good solution, with the background Xubuntu 20.04, kernel 5.4.0-52-generic, fresh install without any added software, installed and updated today, on Asrock B550 with AMD 4650G. – Wiebe van der Worp Oct 29 '20 at 11:01

Wiebe van der Worp · Answer 2 · 2020-11-05T12:26:30.070

Remove the screensaver

In addition, the Xubuntu mailinglist offered an alternative, i.e. not using a screensaver at all. The steps are:

sudo apt remove xfce4-screensaver

Next, disable start on login of xfce4-screensaver: In Xubuntu it is Whisker > Settings > Session and Startup > [] Screensaver (launch screensaver and locker program)

Finally:

xfce4-screensaver-command --exit

It also should be noted that turning off a screensaver involves setting power manager, turning display power management on (yes, not off) and move the sliders to never blank.

20.04 Mouse click and keyboard unresponsive

2 Answers2

Replace the screen saver

Remove the screensaver

Linked