I am facing the same issue with Intel HD Graphics 520 [Skylake GT2]. On switching to Ubuntu Wayland, the artifacts are gone.
** Attachment added: "Fuzzy artifacts on startup" https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/1864778/+attachment/5361807/+files/Screenshot-20200427143519-1557x796.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1864778 Title: Intel Drivers Artifacts after Mesa-Dev Update To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/1864778/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs