id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
23214	gdm-50.0	pierre	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"	enhancement	closed	normal	13.1	BOOK	git	medium	fixed