Desktop Team Integration Squad Updates – Monday 3rd March 2025

[vanvugt]

Hi everyone, below you will find updates from the Desktop team’s Integration squad from the last week. If you’re interested in discussing a topic please start a thread in the Desktop area of Discourse.

Last week’s notes are here: Desktop Team Integration Squad Updates – Monday 24th February 2025

[vanvugt]

• Monday is a state holiday so I’m posting this early…
• Lots of bug triage and user support in Launchpad and upstreams.
• Published a debrief about triple buffering.
• Continued debugging to figure out why fullscreen direct scanout stutters so much when it has less work to do than in compositing. Now seeking input from Intel kernel developers.
• Got the Mutter VKMS tests fix merged upstream in 48.rc.
• Cherry picked the hybrid GPUs regression fix into Mutter 47.6
• Uploaded a BlueZ patch for Noble to resolve the current most popular Bluetooth bug.
• Prepared a Plymouth patch for Noble to help Alfonso. I thought I was the sponsor but it turns out I also need a sponsor.
• Proposed a fix for automated tests timing out in Mutter 48.beta. Fix landed in 48.rc.
• Proposed a fix for a direct scanout segfault in 25.04.
• Drafted a fix for the remaining Debian CI test failure for Mutter 48.beta.
• Proposed a fix for a theoretical frame timing mixup when waking from sleep.
• Xorg touchscreen testing to help a partner.
• Corporate housekeeping.
• Investigating triple buffering fixes to potentially backport to older releases. The only confirmed issue is in GNOME 47 the screen might become frozen during a night light animation (or other static KMS property changes). Pushed a workaround to the triple-buffering-v4-47 maintenance branch. Work still in progress to fix the root cause (also I can’t decide if that’s just a task for 47 or will be needed in 48 too).

[jbicha]

• Uploaded GNOME Shell 48 Beta (and related packages) to Debian Unstable after approval from the Debian Release Team and after Daniel made multiple fixes for the autopkgtests
• Updated several Debian packaged GNOME Shell extensions for GNOME 48. I’d like to stop doing this work myself, but it helped smooth the transition. I don’t plan to do this work for GNOME 49 so if this sounds like something you might want to help us with, find us in August either on OFTC IRC in #debian-gnome or on the mailing list.
   
• Cherry-picked Alessandro’s proposed fix for xdg-desktop-portal-gnome to support using the Papers app for Print Preview instead of only Evince
• Packaged the latest pre-release version of gtk4 4.17/4.18. Sponsored test fixes from Alessandro and a build fix with the newest cpdb-libs from Michael Weghorn.
• Merged NetworkManager 1.52 for Ubuntu 25.04. I had merged a RC build just before Ubuntu 25.04 Feature Freeze.
   
• Uploaded some early GNOME 48 RC updates
• My SRU to update the color emoji font for Unicode 16 in Ubuntu 22.04 LTS and 24.04 LTS was released. This is probably the last color emoji font update for Ubuntu 22.04 LTS unless someone else does the work.
• Miscellaneous other updates