[Bug 1762952] Re: Alternative shortcut for layout switching Alt+Shift unexpectedly set by default

[Alkis Georgopoulos]

Hi, this fix caused a regression in ubiquity: LP: #1892014

Ubiquity doesn't put alt_shift_toggle in XKBOPTIONS anymore, so we
cannot switch to e.g. Greek using Alt+Shift, after going through a
normal installation (or even in the live session).

Are users expected to manually run `dpkg-reconfigure keyboard-
configuration` right after a GUI installation of Ubuntu?

E.g. ubuntu-mate-18.04.2-desktop-amd64.iso is affected while 18.04.1
isn't.

Should this issue be resolved in console-setup or in ubiquity?

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to console-setup in Ubuntu.
https://bugs.launchpad.net/bugs/1762952

Title:
  Alternative shortcut for layout switching Alt+Shift unexpectedly set
  by default

Status in console-setup package in Ubuntu:
  Fix Released
Status in gnome-control-center package in Ubuntu:
  Invalid
Status in console-setup source package in Bionic:
  Fix Released
Status in gnome-control-center source package in Bionic:
  Invalid

Bug description:
  [Impact]

  The keyboard-configuration package provides a tool for configuring the
  keyboard via /etc/default/keyboard. However, there are desktop GUIs
  which provide such tools as well, and in the case of gnome-control-
  center it has another idea of what /etc/default/keyboard should
  contain. In short: The different tools don't play well together.

  The proposed upload does not claim to fix all issues with this
  incompatibility. But one of the annoyances is that a pure upgrade of
  the keyboard-configuration package may result in a changed keyboard
  configuration without the user asking for it. The proposed upload does
  address that particular issue on desktop systems.

  [Test Case]

  1. On an Ubuntu 18.04 system, make sure that the contents of
     /etc/default/keyboard is 'the g-c-c style', for instance:

     XKBLAYOUT=se,us
     BACKSPACE=guess
     XKBVARIANT=,

  2. Reboot.

  3. Upgrade to the version of the keyboard-configuration package in
     bionic-proposed.

  => Find that /etc/default/keyboard was not changed through the
  upgrade.

  4. Run the command

     sudo dpkg-reconfigure keyboard-configuration

  => Find that you are now offered to change your keyboard
  configuration.

  [Regression Potential]

  As a result of this upload, and unlike before, no keyboard
  configuration will happen behind the scenes on a desktop system due to
  an upgrade of the keyboard-configuration package. This is the desired
  change, and I can't think of a case when a user would want the
  configuration to be changed without having asked for it.

  [Original description]

  Version: Ubuntu 18.04 Final Beta with default Gnome Shell included in
  18.04

  Steps to reproduce:
  1. Define two keyboard input methods in Settings -> Region & Language -> Input Sources
  2. Open several applications
  3. Observe that application windows can be iterated with Alt + Tab
  4. Once application window iteration was begun with Alt + Tab, try to iterate backwards with Alt + Shift + Tab.
  5. Try to change keyboard input method switching hotkeys in Settings -> Region & Language -> Input Sources -> Options.
  6. Observe that Keyboard shortcut for "Alternative switch to next source" is set to "Alt + Shift" and that keyboard shortcuts can only be changed in Settings -> Devices -> Keyboard -> Keyboard Shortcuts.
  7. Observe that the shortcut for "Alternative switch to next source" is not available for configuration in Settings -> Devices -> Keyboard -> Keyboard Shortcuts.

  Actual state:
  * Performing step 4 does not select the previous app in application switcher but instead changes  keyboard input method.

  Expected state:
  * The shortcut for "Alternative switch to next source" can be changed and / or deactivated in Settings -> Devices -> Keyboard -> Keyboard Shortcuts.

  Notes:
  * The above was working fine in Ubuntu 17.10. I assume "Alternative switch to next source" did not exist in that version of Gnome Shell.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/console-setup/+bug/1762952/+subscriptions