On Wed, 2025-04-23 at 18:17 +0200, Jocelyn Falempe wrote:
> On 23/04/2025 18:01, Adam Williamson wrote:
> > On Wed, 2025-04-23 at 11:43 -0400, Neal Gompa wrote:
> > > On Wed, Apr 23, 2025 at 11:42 AM Adam Williamson
> > > <adamw...@fedoraproject.org> wrote:
> > > > 
> > > > On Tue, 2025-04-22 at 11:51 +0200, Jocelyn Falempe wrote:
> > > > > Hi,
> > > > > 
> > > > > I've packaged 3 userspace consoles, on my copr repository for Fedora.
> > > > > They can replace fbcon (The default kernel-based console), have more
> > > > > features (like scrolling) and are more secure as they run in 
> > > > > userspace.
> > > > > 
> > > > >    * Kmscon: https://copr.fedorainfracloud.org/coprs/jfalempe/kmscon/
> > > > >    * Cage/foot or Gnome-kiosk/Ptyxis:
> > > > > https://copr.fedorainfracloud.org/coprs/jfalempe/Userspacevt/
> > > > 
> > > > Do they use xkb keyboard layouts and configuration? Or kbd?
> > > 
> > > The Wayland ones will use xkb. kmscon probably still uses kbd.
> > 
> > then for the love of god can we switch to a wayland one yesterday? :P
> 
> Kmscon uses xkbcommon, so probably xkb too.
> 
> > 
> > (but on a serious level, how does configuring keyboard layout / input
> > method work if all you have is a compositor and a terminal app?
> > presumably read from a file...has the format and location been
> > standardized?)
> 
> systemd has the localectl command to do that, it also generates a file 
> /etc/vconsole.conf which has the keymap information.

Hmm, but this is still problematic. localectl can *set* both console
(kbd) layouts and a xkb layouts, but AFAIK like it only ever writes a
kbd layout name to /etc/vconsole.conf . It has a ridiculous lookup
table for converting between the two on various operations - so it can
try to set a 'matching' xkb configuration for whatever kbd layout is
specified in vconsole.conf - but this is buggy and restricted. This
whole mess is what I would like to kill. I would love to get to a
situation where we *only* care about xkb layouts, and that's the config
we write.

> 
> When trying with Gnome-kiosk or Kwin, the layout is automatically 
> configured (I use dvorak, and it was already setup without any interaction).
> For Kmscon, you need to edit the file /etc/kmscon.conf.
> And for Cage + foot, I've done a workaround, to read the configuration 
> from /etc/vconsole.conf with [1], and export the XKB_DEFAULT_LAYOUT 
> variable.
> I can probably do the same for kmscon, or read directly 
> /etc/vconsole.conf in kmscon.
> 
> [1] 
> https://gitlab.com/kdj0c/userspacevt/-/blob/main/cagefootvt/usr/libexec/cagefootvt/wait_tty.sh?ref_type=heads#L11

I suspect if you try this on a Russian install, you will find you can't
type any ASCII characters.
-- 
Adam Williamson (he/him/his)
Fedora QA
Fedora Chat: @adamwill:fedora.im | Mastodon: @ad...@fosstodon.org
https://www.happyassassin.net



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