[SRU] New upstream release 3.36.3

[Iain Lane]

[ Description ]

We should ship the stable update for gdm3

    - Always use separate session bus for greeter sessions
    - Chrome remote desktop fix
    - Don't hardcode path to plymouth
    - Fixes for when GDM isn't started on its configured initial VT (bug 1845801)
    - keyutils has a .pc file so use it
      This runs dbus-run-session, so the binary needs to be available
    - User switching fix

We have a GNOME MRE so upstream's fixes don't need to be explicitly verified.

[ QA ]

Test:

1. Regular login
2. Auto-login
3. Fast user switching
4. X and Wayland
5. Launching different sessions

[ Regression potential ]

It's the program which logs you in to your session - the consequences could be severe up to and including nobody being able to log in using gdm.

[Chris Halse Rogers (raof)]

Hello Iain, or anyone else affected,

Accepted gdm3 into focal-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/gdm3/3.36.3-0ubuntu0.20.04.1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed-focal to verification-done-focal. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-focal. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

[Ubuntu SRU Bot (ubuntu-sru-bot)]

All autopkgtests for the newly accepted gdm3 (3.36.3-0ubuntu0.20.04.1) for focal have finished running.
The following regressions have been reported in tests triggered by the package:

systemd/245.4-4ubuntu3.2 (amd64, s390x, ppc64el)

Please visit the excuses page listed below and investigate the failures, proceeding afterwards as per the StableReleaseUpdates policy regarding autopkgtest regressions [1].

https://people.canonical.com/~ubuntu-archive/proposed-migration/focal/update_excuses.html#gdm3

[1] https://wiki.ubuntu.com/StableReleaseUpdates#Autopkgtest_Regressions

Thank you!

[Iain Lane (laney)]

Looks to me like the systemd-fsckd test is just busted on focal since 2020-08-13 :(

[jeremyszu (os369510)]

I'd some verification on this ticket.

[Steps]

1. Install an Ubuntu image (5.6.0-1027 kernel)
2. sudo apt upgrade
3. enable focal-proposed
4. sudo apt install gdm3
5. reboot

[Test scenarios]

* With attaching nVidia graphic P2000:
(NVIDIA Corporation GP106GL [Quadro P2000] [10de:1c30])

** using nouveau as graphic driver:

1. Regular login
 - Login as "u" through X: PASS
 - Login as "u" through Wayland: PASS

2. Auto-login
 - Auto-login as "u" through X: PASS
 - Auto-login as "u" through Wayland: PASS

3. Fast user switching
 - Login as "u" throuh X: PASS
 - Switch from "u" to "uu" through X: PASS
 - Switch from "uu" to "uuu" through Wayland: PASS
 - Switch from "uuu" to "uuuu" through Wayland: PASS
 - Switch from "uuuu" to "u": PASS
 - Switch from "u" to "uu": PASS
 - Switch from "uu" to "uuuu": PASS
 - Switch from "uuuu" to "uuu": PASS

4. X and Wayland
 - Not sure the test cases, please review the above test cases whether covering this case.

5. Launching different sessions
```
$ loginctl
SESSION UID USER SEAT TTY
      1 1001 u seat0 tty2
     15 1000 uu seat0 tty3
     17 1002 uuu seat0 tty4
     19 1003 uuuu seat0 tty5
     39 1005 uuuuuu seat0 tty7
     44 1004 uuuuu seat0 tty6
     49 1001 u pts/5
```

** using nvidia (from nvidia-driver-440) as graphic driver:

1. Regular login
 - Login as "u" through X: PASS

2. Auto-login
 - Auto-login as "u" through X: PASS

3. Fast user switching
 - Login as "u" throuh X: PASS
 - Switch from "u" to "uu" through X: PASS
 - Switch from "uu" to "uuu" through X: PASS
 - Switch from "uuu" to "uuuu" through X: PASS
 - Switch from "uuuu" to "u": PASS
 - Switch from "u" to "uu": PASS
 - Switch from "uu" to "uuuu": PASS
 - Switch from "uuuu" to "uuu": PASS

4. X and Wayland
 - nvidia is blocking Wayland.

5. Launching different sessions
```
$ loginctl
SESSION UID USER SEAT TTY
      1 1001 u seat0 tty2
     10 1001 u pts/1
      4 1000 uu seat0 tty3
      6 1002 uuu seat0 tty4
      8 1003 uuuu seat0 tty5
     c1 125 gdm seat0 tty1
```

* Without attaching graphic card:
(Intel Corporation Device [8086:9bc5] using i915)

1. Regular login
 - Login as "u" through X: PASS
 - Login as "u" through Wayland: PASS

2. Auto-login
 - Auto-login as "u" through X: PASS
 - Auto-login as "u" through Wayland: PASS

3. Fast user switching
 - Login as "u" throuh X: PASS
 - Switch from "u" to "uu" through X: PASS
 - Switch from "uu" to "uuu" through Wayland: PASS
 - Switch from "uuu" to "uuuu" through Wayland: PASS
 - Switch from "uuuu" to "u": PASS
 - Switch from "u" to "uu": PASS
 - Switch from "uu" to "uuuu": PASS
 - Switch from "uuuu" to "uuu": PASS
 - Switch from "uuu" to "uuuuuu" (X): PASS
 - Switch from "uuuuuu" to "uuuuu" (Wayland): PASS

4. X and Wayland
 - Not sure the test cases, please review the above test cases whether covering this case.

5. Launching different sessions
```
$ loginctl
SESSION UID USER SEAT TTY
     12 1005 uuuuuu seat0 tty7
     15 1004 uuuuu seat0 tty8
     17 1001 u pts/3
      4 1001 u seat0 tty2
      5 1000 uu seat0 tty3
      7 1002 uuu seat0 tty4
      9 1003 uuuu seat0 tty5
```

[Launchpad Janitor (janitor)]

This bug was fixed in the package gdm3 - 3.36.3-0ubuntu0.20.04.1

---------------
gdm3 (3.36.3-0ubuntu0.20.04.1) focal; urgency=medium

  [ Iain Lane ]
  * New upstream release (LP: #1894874).
    - Always use separate session bus for greeter sessions
      This runs dbus-run-session, so the binary needs to be available
    - Chrome remote desktop fix
    - Don't hardcode path to plymouth
    - Fixes for when GDM isn't started on its configured initial VT (LP:
      #1845801)
    - keyutils has a .pc file so use it
    - User switching fix
  * debian/{control,gbp.conf}: Update for ubuntu/focal & upstream/3.36.x

  [ Simon McVittie ]
  * Add Depends on dbus, for dbus-run-session
  * Update symbols file.
    This ignores a change to private symbols: gdm_find_display_session_for_uid
    isn't declared in a public header, and nothing in Debian/Ubuntu seems to
    call it.

 -- Iain Lane <email address hidden> Tue, 08 Sep 2020 18:01:39 +0100

[Brian Murray (brian-murray)]

The verification of the Stable Release Update for gdm3 has completed successfully and the package is now being released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.