[Bug 1875062] Re: [20.04] Keyboard layout not enabled immediately during installation when typing username/password

[Benjamin Drung]

Thanks to Nicolas Mouart and Dag Bjerkeli for analyzing the problem. I
could easily reproduce/simulate the problem:

Bug report
==========

Tested on Ubuntu 21.10 with virt-manager. Created a virtual machine and
selected "Ubuntu 21.04" as OS (which uses machine type pc-q35-6.0) and
changed the video to virtio with 3D acceleration. Used jammy-desktop-
amd64.iso from 2022-04-05.

* Install Welcome -> Try Ubuntu (keep English as language)
* Install Ubuntu 22.04 LTS
* Welcome -> Continue (keep English as language)
* Keyboard Layout -> Change to German (Neo 2), but other layouts will work too -> Continue
* Updates and other software -> Continue
* Installation type -> select what you want -> Install now
* Where are you? -> Continue
* Open a terminal and run:
```
sudo udevadm trigger
```

and boom. They keyboard layout changed back to English.

ubiquity sets /etc/default/keyboard when you select a keyboard layout,
but does not change the keyboard set in GNOME.

Workaround
==========

Before installation: Open Settings -> Keyboard -> Input Sources -> Add
(plus sign) your keyboard layout to the input sources. Then select your
keyboard layout in the keyboard selector.

Fix
===

gnome-session settings should be changed when a keyboard layout is
selected in ubiquity.

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https://bugs.launchpad.net/bugs/1875062

Title:
  [20.04] Keyboard layout not enabled immediately during installation
  when typing username/password

Status in Release Notes for Ubuntu:
  Fix Released
Status in ubiquity package in Ubuntu:
  Confirmed
Status in ubiquity source package in Focal:
  Triaged
Status in ubiquity source package in Hirsute:
  Won't Fix

Bug description:
  During a fresh install of Ubuntu 20.04, selecting Norwegian keyboard
  is provided and keys are responding correctly at that stage. But later
  when entering user information the keyboard setting is wrong.

  It looks like it have fallen back to English keyboard-layout.
  I failed to log in after my first install, so a new attempt I tried to write some special letters in the name field, and noticed that I got the wrong characters for the key.

  The install is done in VMware workstation 15.

  In the attached screendump, the characters (';[":{) after my name
  should have been (æøåÆØÅ) that is norwegian characters.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: ubiquity (not installed)
  ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30
  Uname: Linux 5.4.0-26-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  Date: Sat Apr 25 19:27:41 2020
  InstallCmdLine: file=/cdrom/preseed/ubuntu.seed initrd=/casper/initrd quiet splash --- maybe-ubiquity
  InstallationDate: Installed on 2020-04-25 (0 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
  SourcePackage: ubiquity
  Symptom: installer
  UpgradeStatus: No upgrade log present (probably fresh install)

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