Hi, I have experienced the same behaviour, or a very similar one. I also use KDE, and have a Intel/Nvidia hybrid system. When on Power Save mode (I use Plasma Optimus to switch btw), on the first start of firefox in a session it just displays a frozen image of what was on the screen when I started it. If I kill it and start it a second time it works normally, and also on subsequents starts, until I log out and back in again. This is also happening with the upstream firefox from the link in comment https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1954765/comments/6
Can confirm that switching to Hybrid mode makes the problem go away. If you want me to collect debug information, let me know what you want. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1954765 Title: Firefox instance opens with an unusable window that has the content area filled with the frozen image of the window/desktop image in the background To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1954765/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs