I think the issue here is that you've discovered the software renderer by choosing a dtoverlay value that wasn't supported.
So yes it's a bug, but not one we plan on devoting any time to. ** Summary changed: - Graphical flashes on a raspi 4 + Graphical flashes on a raspi 4 when software rendering is forced ** Changed in: xorg-server (Ubuntu) Importance: Undecided => Low ** Changed in: mesa (Ubuntu) Importance: Undecided => Low -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1911030 Title: Graphical flashes on a raspi 4 when software rendering is forced To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/1911030/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
