gdm-50.0

[pierre]

Forgotten when updating to gnome 50...

50.alpha

• Fixed bug where we'd lose track of the user session failure counter
• Added GNOME OS CI
• Special sessions (like GDM, initial-setup) are now loaded from .desktop files rather than being hard-coded into GDM
• Entirely removed X11 support, except for the ability to launch other desktops' X11 sessions with a per-user X server. This means that features like XDCMP and system-wide Xserver are gone, and that GDM's own sessions will always run with Wayland.
• Consequently, we removed the ability to compile GDM without Wayland support
• Introduced a new gnome-headless-session@<username>.service, which makes it easier to start a headless graphical session (i.e. for RDP purposes)
• Merged display and session registration into one step, because the previous approach didn't work right for Wayland. This allowed us to remove workarounds that caused bugs
• Reworked wtmp/utmp/btmp fields to contain more useful values, especially on Wayland and with headless RDP sessions
• Dropped final usages of the gdm/gdm3 user, so distros no longer need to create it for us (GDM now entirely relies on dynamically allocated users)
• Adapted to changes in gnome-shell's systemd unit files, and dropped hard-coded gnome-shell session modes. It's now easier for custom/kiosk sessions to use custom gnome-shell session modes
• Added support for Linux 6.18's new boot_display sysfs attribute, which replaces the boot_vga attribute. These attributes allow GDM to identify the primary GPU, but modern AMD cards cannot use boot_vga because they no longer have VGA support!
• Fixed bug where we failed to propagate some environment variables into the greeter's Pipewire instance

50.alpha.1

• Corrected Git mishap. The 50.alpha tag points at a commit that never made it to the main branch. 50.alpha.1 corrects this. Make sure to look at the changelog for 50.alpha for news about what's new in this release!
• Fixups to the README
• Dropped vistigial udev-dir meson option
• Translation updates

50.beta

• Add support for "unified" authentication mechanism. Histrionically, each authentication method went through its own PAM conversation. Now, we also support running a single PAM conversation that runs multiple authentication methods at once. This requires support from PAM modules like pam_sss
• Introduce debugging for JSON PAM messages via $GDM_DEBUG_JSON_REQUESTS env var
• Re-introduce a timeout while waiting for primary GPU to appear. There are edge cases where there is a GPU (and thus Wayland will work) but none is labeled as primary. Once the timeout expires we stop waiting for the primary GPU and just launch the session on any available GPU.
• Authentication failures caused by PAM services reporting themselves as unavailable are no longer reported as failed authentication attempts. For instance, fingerprint sensor timeouts are reported as a service unavailable error, and we would previously log that as a failed authentication attempt.
• "Service Unavailable" errors from PAM modules are no longer treated as failed login attempts. Most notably, such errors are returned by fprintd whenever the fingerprint sensor times out.
• GDM now tries to shut down the session whenever the PAM worker process crashes
• Partially un-merged the session and display registration steps that were merged in 50.alpha, due to bugs that the change introduced
• Misc. other bug fixes
• Translation updates

50.rc

• Changed remote desktop plumbing (i.e., the CreateRemoteDisplay method) to accept a hostname, so that we can correctly communicate this information to PAM and to wtmp/utpm/btmp.
• Minor performance optimization for $GDM_DEBUG_JSON_REQUESTS
• Translation updates

50.0

• With systemd v260+, remote desktop sessions and local sessions in the background will be granted access to the GPU. This allows remote sessions to have accelerated graphics on distros that restrict the permissions on the GPU's device nodes (i.e. Debian and its derivatives)
• Translation updates

[pierre]

Fixed at 02e8228ff57