Desktop Team Updates - Monday 7th February 2022

[vanvugt]

Triple buffering

• Finally fixed the atomic KMS (Wayland) multi-monitor problem. It’s a pre-existing bug in mutter.
• Redesigned frame scheduling to resolve a year-long debate about dynamic scaling.
• Fixed a resource leak on shutdown.
• Fixed warnings emitted during monitor power saving modes.
• Retested: Intel, DisplayLink, Raspberry Pi, amdgpu, nouveau, nvidia-470 (EGLStreams), nvidia-510 (GBM), LLVMpipe, Wayland, X11, multi-monitors, power saving modes.
• I see performance improvement with every driver but major improvements (doubling frame rates) on Intel GPUs and Raspberry Pi. AMD and Nvidia users may still see similar benefits wherever they are unable to maintain full frame rate at present.
• Feature complete.

Everything else

• Answered lots of bugs in Launchpad and upstreams (backlog stats here).
• Investigating alternatives to mutter frame skip fix !2121.
• Sidetracked by a jammy kernel regression that seems to only affect my desktop.
• Landed a small fix in gnome-shell 42.
• ISO testing on various laptops.