udevd error message on boot: Error calling EVIOCSKEYCODE on device node ... Invalid Argument about eudev HOT 1 CLOSED

Could fix ist myself. Maybe also a solution for people with a similar problem.

solution

For some reasons udev tries to load some keyboard assignments from /lib/udev/hwdb.d/60-keyboard.hwdb which deal with the wlan switch of a Lenovo Idea Pad. Since I have no Idea Pad but some other Lenovo notebook, those keys can't be assigned which causes the error.

Thus I just copied the file /lib/udev/hwdb.d/60-keyboard.hwdb to /etc/udev/hwdb.d/60-keyboard.hwdb and uncommented the particular lines mentioned at the end of the udevadm test call above:

# IdeaPad
evdev:name:Ideapad extra buttons:dmi:bvn*:bvr*:bd*:svnLENOVO*:pn*:*
# KEYBOARD_KEY_0d=rfkill                                 # airplane mode switch (toggle all wireless devices)
# KEYBOARD_KEY_08=f20                                    # micmute
# KEYBOARD_KEY_42=f23
# KEYBOARD_KEY_43=f22

After that, just rebuilt the hwdb-database with sudo udevadm hwdb --update.

Now the warnings on boot are gone. I recognized no other drawbacks, which isn't surprising since the switch does not exist on my notebook.

from eudev.