Mesa 1:25.1.1-1 was the culprit for me and many others.
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Dear all, This morning, after the usual system upgrade, I experienced a system hang during boot — right before the desktop environment was supposed to start. Using a live distro and chroot, I inspected the recent updates and noticed mesa among them: [2025-05-22T09:36:45+0200] [ALPM] upgraded mesa (1:25.0.5-1 -> 1:25.1.1-1) Here’s an excerpt from the boot log: gnome-session-binary\[...] WARNING: Application 'org.gnome.Shell.desktop' failed to register before timeout gnome-session-binary\[…e class='quote' data-post="1" data-topic="71674">
It is looking like the new Mesa update is causing problems mostly with nVidia systems…refer to: So far there have been reports with nVidia systems (including hybrid systems) & Tigerlake Intel being affected. I would recommend upgrading with caution. So far, Gnome & KDE have been affected. Asking everyone to post: lspci | grep 'VGA' or inxi -G Or both. Thank You!