Hello this is a fresh install of Ubuntu 20.04 LTS Firefox 8.0 for Ubuntu Canonical - 1.0 my system Acer Aspire 5738PG intel core 2 duo processor T6600 2.2 Ghz, 800MHz FSB ATI Mobility Radeon HD 4570 4gb memory 1tb westren digital drive My problem is the screen flickers with dots black, green, blue, grey everytime I type or move the mouse.(see attached) this only happens inside Firefox notice left side of screenshot. I have uninstalled and just reinstalled same issue, I have uninstalled rebooted and reinstalled same issue. this is a fresh install no addons or extensions. any help would be very helpful.