Arch Linux

Please report this upstream: https://github.com/xkbcommon/libxkbcommon/issues

I can't reproduce this, at least in GNOME, with Qt's xcb backend. This might be something very specific to your settings, e.g. the exact configured keymap.

I can confirm, same issue is here. However pretty weird, because have two box with almost the same config, but only one is failing.

Checked:
Environment variables - not found relevant difference.
Dconf (using gnome) - not found relevant difference.
Trolltech conf, etc - not found relevant difference.
/etc - not found relevant difference.

Failing qt apps eg: doublecmd, flacon, telegram, keepassxc

But on the box where I'm facing this issue, qemu is installed, and installed brltty as auxiliary package... Perhaps?

I also have two boxes and I'm facing the problem only on one of them. Might it be a multilib issue? (The multilib repo is enabled only on the box that faces the problem, and perhaps that's the case of the previous comment as well?)

Same here, three seemingly identical installations, one of them (macbook 2013) shows this behaviour.

Maybe try running an application with XKB_LOG_LEVEL=debug XKB_LOG_VERBOSITY=10 and then compare between a working and a broken setup.

Possible additional step to reproduce: set the xkb option "numpad:mac". Removing this option allowed qt apps to receive keyboard input (this is with a standard pc keyboard model, us layout).

I'm having similar problems (errors relating to keymap compilation) but not in Qt/KDE. The problems for me occur in AwesomeWM, Rofi, and Kitty. Here is the output when I run "env XKB_LOG_LEVEL=debug XKB_LOG_VERBOSITY=10 rofi":

xkbcommon: DEBUG: Include path failed: /home/andrew/.config/xkb (No such file or directory)
xkbcommon: DEBUG: Include path failed: /home/andrew/.xkb (No such file or directory)
xkbcommon: DEBUG: Include path failed: /etc/xkb (No such file or directory)
xkbcommon: DEBUG: Include path added: /usr/share/X11/xkb
xkbcommon: WARNING: /usr/share/X11/locale/en_US.UTF-8/Compose:5079:46: this compose sequence is a duplicate of another; skipping line
xkbcommon: WARNING: /usr/share/X11/locale/en_US.UTF-8/Compose:5081:48: this compose sequence is a duplicate of another; skipping line
xkbcommon: WARNING: /usr/share/X11/locale/en_US.UTF-8/Compose:5083:48: this compose sequence is a duplicate of another; skipping line
xkbcommon: WARNING: /usr/share/X11/locale/en_US.UTF-8/Compose:5087:47: this compose sequence is a duplicate of another; skipping line
xkbcommon: WARNING: /usr/share/X11/locale/en_US.UTF-8/Compose:5089:46: this compose sequence is a duplicate of another; skipping line
xkbcommon: WARNING: /usr/share/X11/locale/en_US.UTF-8/Compose:5097:48: this compose sequence is a duplicate of another; skipping line
xkbcommon: WARNING: /usr/share/X11/locale/en_US.UTF-8/Compose:5101:46: this compose sequence is a duplicate of another; skipping line
xkbcommon: WARNING: /usr/share/X11/locale/en_US.UTF-8/Compose:5103:46: this compose sequence is a duplicate of another; skipping line
xkbcommon: WARNING: /usr/share/X11/locale/en_US.UTF-8/Compose:5107:45: this compose sequence is a duplicate of another; skipping line
xkbcommon: WARNING: /usr/share/X11/locale/en_US.UTF-8/Compose:5110:46: this compose sequence is a duplicate of another; skipping line
xkbcommon: DEBUG: created compose table from locale en_US.UTF-8 with path /usr/share/X11/locale/en_US.UTF-8/Compose

(process:25700): X11Helper-WARNING **: 10:14:51.685: Failed to get Keymap for current keyboard device.

And "env XKB_LOG_LEVEL=debug XKB_LOG_VERBOSITY=10 kitty":

xkbcommon: DEBUG: Include path failed: /home/andrew/.config/xkb (No such file or directory)
xkbcommon: DEBUG: Include path failed: /home/andrew/.xkb (No such file or directory)
xkbcommon: DEBUG: Include path failed: /etc/xkb (No such file or directory)
xkbcommon: DEBUG: Include path added: /usr/share/X11/xkb
[096 10:17:00.101497] [glfw error 65544]: Failed to compile XKB keymap
GLFW initialization failed

It would be nice if someone who is affected could git bisect between xkbcommon-1.1.0 and xkbcommon-1.2.0 to find the bad commit.

From 1.1.0+1+g40c00b4, qt is broken for me (w/ "setxkbmap -option numpad:mac"). https://github.com/xkbcommon/libxkbcommon/commit/40c00b472144d1684d2fb97cafef39ef59f21b28

Thanks, I can reproduce it now. https://github.com/xkbcommon/libxkbcommon/issues/229