In my case, I traced the issue to the keyboard-configuration package
postinst script, which ends up calling 'setupcon --force --save' which
in turn calls 'kbd_mode -u'
To reproduce:
sudo apt install --reinstall keyboard-configuration
setupcon documentation states:
"--force Do not check whether we are on the console. Notice that you can be
forced to hard-reboot your computer if you run setupcon with this option and
the screen is controlled by a X server."
It looks like the checks to avoid this behavior while a graphic
environment is active don't work in the context of the installer.
** Also affects: console-setup (Ubuntu)
Importance: Undecided
Status: New
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Touch seeded packages, which is subscribed to lightdm in Ubuntu.
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:
New
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...
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/console-setup/+bug/1508146/+subscriptions
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