Can't inject mouse mapping at Fedora KDE

[Ransei422]

I have installed newest version of the software

sudo dnf install input-remapper
Updating and loading repositories:
Repositories loaded.
Package "input-remapper-2.1.1-6.fc43.noarch" is already installed.

Nothing to do.

• Fedora 43 KDE Wayland

After clicking "Apply" in my remapped mouse settings I'm getting this error and I'm not able to apply the settings - it says "Starting injection..." and there it stops

Loading group "Logitech USB Receiver"
Loading preset "Mouse"
Loading preset from "/home/suomi/.config/input-remapper-2/presets/Logitech USB Receiver/Mouse.json"
Loading preset "Mouse"
Loading preset from "/home/suomi/.config/input-remapper-2/presets/Logitech USB Receiver/Mouse.json"
Traceback (most recent call last):
  File "/usr/lib/python3.14/site-packages/inputremapper/gui/user_interface.py", line 254, in <lambda>
    "clicked", lambda *_: self.controller.start_injecting()
                          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/lib/python3.14/site-packages/inputremapper/gui/controller.py", line 673, in start_injecting
    if not self.data_manager.start_injecting():
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/lib/python3.14/site-packages/inputremapper/gui/data_manager.py", line 569, in start_injecting
    if self._daemon.start_injecting(self.active_group.key, self.active_preset.name):
       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3.14/site-packages/pydbus/proxy_method.py", line 102, in __call__
    raise error
  File "/usr/lib/python3.14/site-packages/pydbus/proxy_method.py", line 97, in __call__
    result = instance._bus.con.call_sync(*call_args)
gi.repository.GLib.GError: g-io-error-quark: GDBus.Error:unknown.PicklingError: Can't pickle local object <class 'ctypes.CDLL.__init__.<locals>._FuncPtr'> (36)
read loop for /dev/input/event24 stopped
WARNING: HandlerDisabled entry failed: "nothing connected to <bound method RecordingToggle._on_gtk_toggle of <inputremapper.gui.components.editor.RecordingToggle object at 0x7f3f11d97770>>"
WARNING: HandlerDisabled exit failed: "nothing connected to <bound method RecordingToggle._on_gtk_toggle of <inputremapper.gui.components.editor.RecordingToggle object at 0x7f3f11d97770>>"

(input-remapper-gtk:35251): Gtk-CRITICAL **: 20:53:53.731: gtk_main_quit: assertion 'main_loops != NULL' failed

Journal

Nov 02 20:53:22 fedora python3[35251]: detected unhandled Python exception in '/usr/sbin/input-remapper-gtk'
Nov 02 20:53:22 fedora abrt-notification[38667]: Process 35251 (input-remapper-gtk) of user 0 encountered an uncaught gi.repository.GLib.GError exception
Nov 02 20:55:24 fedora sudo[40442]:    suomi : TTY=pts/1 ; PWD=/home/suomi/Desktop ; USER=root ; COMMAND=/usr/sbin/dnf install input-remapper
Nov 02 20:56:11 fedora sudo[40743]:    suomi : TTY=pts/1 ; PWD=/home/suomi/Desktop ; USER=root ; COMMAND=/usr/sbin/input-remapper-gtk
Nov 02 20:56:11 fedora audit[40743]: AUDIT1123 pid=40743 uid=1000 auid=1000 ses=3 subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 msg='cwd="/home/suomi/Desktop" cmd="input-remapper-gtk" exe="/usr/bin/sudo" terminal=pts/1 res=success'
Nov 02 20:56:12 fedora pkexec[40779]: root: Executing command [USER=root] [TTY=/dev/pts/2] [CWD=/home/suomi/Desktop] [COMMAND=/usr/sbin/input-remapper-control --command start-reader-service]
Nov 02 20:56:12 fedora input-remapper-service[1179]: Loaded config from "/home/suomi/.config/input-remapper-2/config.json"

python -VV
Python 3.14.0 (main, Oct  7 2025, 00:00:00) [GCC 15.2.1 20250924 (Red Hat 15.2.1-2)]

[noja11]

I have a similar issue on Bazzite - but I can't find the logs. App just says "Starting Injection..." in the lower right corner with a caution triangle beside it.

[MartyrKomplx]

Was working in Fedora 42, after upgrading to Fedora 43 it stopped working. Uninstalled, then reinstalled.

Seeing same issues in the terminal described above when running, and then when trying to apply a config, I get this:

Traceback (most recent call last):
File "/usr/lib/python3.14/site-packages/inputremapper/gui/user_interface.py", line 254, in
"clicked", lambda *_: self.controller.start_injecting()
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/usr/lib/python3.14/site-packages/inputremapper/gui/controller.py", line 673, in start_injecting
if not self.data_manager.start_injecting():
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/usr/lib/python3.14/site-packages/inputremapper/gui/data_manager.py", line 569, in start_injecting
if self._daemon.start_injecting(self.active_group.key, self.active_preset.name):
~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.14/site-packages/pydbus/proxy_method.py", line 102, in call
raise error
File "/usr/lib/python3.14/site-packages/pydbus/proxy_method.py", line 97, in call
result = instance._bus.con.call_sync(*call_args)
gi.repository.GLib.GError: g-io-error-quark: GDBus.Error:unknown.PicklingError: Can't pickle local object <class 'ctypes.CDLL.init.._FuncPtr'> (36)

[ClementNerma]

I guess the issue is related to the KDE Plasma 6.5 upgrade? Didn't have that problem with 6.4 at least...

[MartyrKomplx]

I guess the issue is related to the KDE Plasma 6.5 upgrade? Didn't have that problem with 6.4 at least...

Something Fedora-specific. I hopped over to my CachyOS (multi-booting, installed just last night) that I'm playing around with, it also has KDE Plasma 6.5.1 but is running Input Remapper with no issues.

[sezanzeb]

Probably same issue as #1196 and #1163

2.2.0 is released with the fix, now it needs to be made available in fedora

[sezanzeb]

(If it is, please close this issue)

[FlipperFlopper99]

the rpm package isn't updated yet, and using alien to convert it from .deb doesn't work either

[Sensenman1]

It works for me now on fedora KDE 6.5 with the standart dnf package

[FlipperFlopper99]

What version of the package are you on? It might have updated. I'll check

[FlipperFlopper99]

Its updated and should work now

Run Sudo dnf update