[Bug 1508146] Re: Alt+left/right arrows switch between tty consoles (Gnome Shell vanishes), cannot disable

[Samuel thibault]

*** This bug is a duplicate of bug 520546 ***
    https://bugs.launchpad.net/bugs/520546

Is there really any reason why keyboard-configuration.postinst passes
--force to setupcon?

In Debian we do this in the Debian installer because it is running
within a bterm and thus can't detect it's running on the Linux console.
But we never do this for an installed system. Apparently Ubuntu took
that code snipped and dropped the check for being running within the
Debian installer, and thus erroneously run with --force when DISPLAY is
empty (typically from unattended upgrades and such), with the resulting
observed effects of this bug report.

I guess Ubuntu wants to apply the attached patch

** Attachment added: "proposed fix"
   https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1508146/+attachment/5227479/+files/patch

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https://bugs.launchpad.net/bugs/1508146

Title:
  Alt+left/right arrows switch between tty consoles (Gnome Shell
  vanishes), cannot disable

Status in console-setup package in Ubuntu:
  Confirmed
Status in gdm3 package in Ubuntu:
  Confirmed
Status in gnome-shell package in Ubuntu:
  Confirmed
Status in kubuntu-meta package in Ubuntu:
  Confirmed
Status in lightdm package in Ubuntu:
  Confirmed
Status in mutter package in Ubuntu:
  Confirmed

Bug description:
  I'm used to using alt+left/right arrow to navigate back and forward in
  web browsers and elsewhere (nautilus)...  But on this fresh install of
  Ubuntu Gnome 15.10 beta, it seems to try and switch me between tty
  consoles (the ctrl+alt+f1 ones).  But it's not listed as one of the
  shortcuts in the "keyboard" menu, so I don't know how to disable it...

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