Thanks for the bug report. Please check that your Mesa version is at least 26.0.8-1ubuntu0.3 in case this has any relation to bug 2152207.
Otherwise this sounds like it could be related to improvements coming in Mutter 51.0 (Ubuntu 26.10), so keep an eye on that too. ** Tags added: amdgpu multigpu nvidia resolute -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2163790 Title: [Wayland][Multi-GPU] External HDMI monitor on NVIDIA dGPU suffers from severe mosaic artifacts/flickering when AMD iGPU is selected as Primary GPU (Reverse-PRIME DMA-BUF sync issue) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/2163790/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
