[Bug 1710637] Re: Input falls through to gdm3 and terminates the session on Ctrl+C

[Iain Lane]

k, here's a program.

If the bug is what I think it is then this should print K_OFF when
everything is good and K_UNICODE when it's bad. You can also run it with
BREAK or FIX to break/fix your system too.

Perhaps if you suffer from this bug you could run this very frequently
so you catch as soon as it changes, and then try to work out what you
were doing to make it flip over.

** Attachment added: "kbd.c"
   https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1710637/+attachment/4952124/+files/kbd.c

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

Title:
  Input falls through to gdm3 and terminates the session on Ctrl+C

Status in console-setup package in Ubuntu:
  Fix Released
Status in gdm3 package in Ubuntu:
  Incomplete
Status in gnome-shell package in Ubuntu:
  Incomplete
Status in mutter package in Ubuntu:
  Incomplete

Bug 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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