[Bug 2080821] Re: Custom caps lock action inconsistent on login screen

[Daniel Edholm]

I'm using regular, vanilla Ubuntu, running bare metal on a laptop.

Apologies for pointing at PAM without knowing, but it was the best I
could come up with.

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https://bugs.launchpad.net/bugs/2080821

Title:
  Custom caps lock action inconsistent on login screen

Status in Ubuntu:
  New
Status in pam package in Ubuntu:
  New

Bug description:
  I have remapped the keyboard's "Caps Lock" button as an extra "Escape"
  button, moving the rare use case of actually needing "Caps Lock" to
  "Shift + Caps Lock". This means that pressing "Caps Lock" anywhere in
  the OS performs whatever "Escape" was supposed to do (apart from
  VSCode, which seems to handle keys separately and differently... but
  that's their problem, not yours). This also translates to the "Caps
  Lock" key on both the laptop's and the external keyboard lighting up
  properly when activated.

  However, at some point I think I locked the computer with "Caps Lock"
  turned on, i.e. the indicator was alight on the keyboard. The
  lockscreen interpreted this, correctly, as "Caps lock = ON". To turn
  it off, I pressed "Shift + Caps Lock". Caps turns off, and I can login
  with my password. Inside the DE, I notice now that the Caps state has
  _not_ shifted, and as such is kept at "Caps lock = ON". I yet again
  press "Shift + Caps lock", which, again correctly, turns Caps lock
  off. I note that the keyboard(s) now have their Caps Lock indicator
  light on, even though my current caps state is "OFF". It seems like
  there are two different systems keeping track of the Caps Lock state,
  and these two can get out of sync.

  System info:
  ```
  ❯ lsb_release -rd
  No LSB modules are available.
  Description:	Ubuntu 24.04.1 LTS
  Release:	24.04
  ```

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