error after fresh instalation ubuntu 16.04

Question

I had an error on my ubuntu 16.04 LTS. Because i installed year ago or more i decide to reinstall it. But even now after updates is doing the same problem. After login to new session if I try to touch with mouse the icons bar all disappear ...even the right up corner with date and start disappear for few second.If i move mouse in the middle they stay in place. Was fine after fresh installation but last night i run updates and now is the same problem like before . If anyone have idea what is going on here, i will really appreciate a little help. i have a video of what is going on but I don't know where to post it.. Thank you

Answer 1

Sangre Sani sent me this fix (from my post, Ubuntu 16.04 Jan 3 2018 update causing screen/access issues - there is another answer there as well but I didn't use it) and it seems to work:

The solution that worked for me

sudo add-apt-repository ppa:paulo-miguel-dias/pkppa
sudo apt-get update && sudo apt-get upgrade
sudo reboot

That updated the mesa thing to the newer version and the problem is fixed!