Why doesn't Ubuntu respond to left click?

Question

ubuntu

Good afternoon, I just downloaded Ubuntu 16.04 LTS today, and there was a problem, after about 5 minutes of use, some problem occurs, and the system simply does not respond to the left click! I put another mouse, everything is the same, I put the mouse in another computer, everything works! What is the problem? And the keyboard, right click and the wheel works!

Answer 1

Look at the dmesg and syslog logs

Answer 2

I would also look at Xorg.log - it's more likely that this is an X glitch.