Display flickering in Dom0 and menus

Laptop - Acer Aspire A515-51-572Q

Issue - Since install there has been periodic screen flickering, this persists through work spaces and displays, though flickering stops on mouse movement. Then, after a system crash, menus began to flicker with small lines appearing over and around options. How do I discover what is causing this?

Version - RC1

Welcome to the community, @Hemlighet.

I had this problem with RC2. I fixed it by enabling testing repos as described here: Docs

in dom0

sudo qubes-dom0-update --enablerepo=qubes-dom0-current-testing
sudo qubes-dom0-update --enablerepo=qubes-dom0-security-testing

This should fix it…If not do let us know?