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[Bug 1710637] Re: Input falls through to gdm3 and terminates the session on Ctrl+C after udevadm trigger is executed under wayland

 

Ok, I'm opening the tasks for Xenial and Trusty, and we can decide
exactly where it makes sense to do the SRU for these changes.

Plus, I understand maybe it was still reproducible in some form on
bionic, so it this should be revisited in general.

** Also affects: console-setup (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Also affects: mutter (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Also affects: gnome-shell (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Also affects: gdm3 (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Also affects: systemd (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Also affects: console-setup (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Also affects: mutter (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Also affects: gnome-shell (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Also affects: gdm3 (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Also affects: systemd (Ubuntu Trusty)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1710637

Title:
  Input falls through to gdm3 and terminates the session on Ctrl+C after
  udevadm trigger is executed under wayland

Status in Snappy:
  Won't Fix
Status in console-setup package in Ubuntu:
  Fix Released
Status in gdm3 package in Ubuntu:
  Invalid
Status in gnome-shell package in Ubuntu:
  Invalid
Status in mutter package in Ubuntu:
  Invalid
Status in systemd package in Ubuntu:
  Invalid
Status in console-setup source package in Trusty:
  New
Status in gdm3 source package in Trusty:
  New
Status in gnome-shell source package in Trusty:
  New
Status in mutter source package in Trusty:
  New
Status in systemd source package in Trusty:
  New
Status in console-setup source package in Xenial:
  New
Status in gdm3 source package in Xenial:
  New
Status in gnome-shell source package in Xenial:
  New
Status in mutter source package in Xenial:
  New
Status in systemd source package in Xenial:
  New

Bug description:
  = Test Cases =

  Test Case 1:
  - Login under Wayland (session Ubuntu)
  - Open a terminal
  - snap install gimp
  - Wait until installation finishes successfully
  - In the terminal window press CTRL+C

  Result:
  - Expected: ^C is displayed in the terminal and the prompt is at the start of a new line
  - Actual: The session is terminated and the login screen is displayed

  Test Case 2:
  - Login under Wayland (session Ubuntu)
  - Open a terminal and type the following command:
    $ sudo udevadm trigger
  - In the terminal window press CTRL+C

  Result
  - Expected: ^C is displayed in the terminal and the prompt is at the start of a new line
  - Actual: The session is terminated and the login screen is displayed

  = Original Description =

  Multiple times a day I find myself without a session after hitting
  Ctrl+C in a terminal, it seems the input falls through the
  Ubuntu/GNOME session and to gdm, which itself decides to terminate.

  Even worse, when this happens, you can briefly see your login password
  in plaintext in the virtual terminal. You can see the password however
  long you want if you stop the gdm service when this happens.

  I don't have a good way to reproduce, but it seems locking the session
  with a keyboard shortcut, subsequently unlocking it, maybe suspending,
  at some point brings this behaviour into the picture, until the
  session dies with a Ctrl+C.

  ProblemType: Bug
  DistroRelease: Ubuntu 17.10
  Package: gdm3 3.24.2-1ubuntu9
  ProcVersionSignature: Ubuntu 4.11.0-13.19-generic 4.11.12
  Uname: Linux 4.11.0-13-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl zcommon znvpair
  ApportVersion: 2.20.6-0ubuntu5
  Architecture: amd64
  CurrentDesktop: GNOME
  Date: Mon Aug 14 15:54:34 2017
  InstallationDate: Installed on 2016-05-06 (464 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
  SourcePackage: gdm3
  UpgradeStatus: Upgraded to artful on 2017-07-19 (25 days ago)

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