Recently I have installed Fedora 25 Linux with KDE Plasma 5.8.5.
Programs running in
konsole or in
xterm do not receive any keyboard input when Alt+H is pressed. All other Alt+H combinations are fine, but Alt+H does nothing. I have searched the keyboard shortcuts in the system settings, but do not see Alt+H bound to any function.
I have tried a different keyboard layout to rule it out as a problem source.
How can I check what is consuming the Alt+H keypress or otherwise debug this issue?
Quick check on the command line (i.e. in a terminal window): press
ctrl-V alt-X, you should see
^[X (i.e. [escape] X). Works for all letters except H on my system.
UPDATE: Some weeks and few software updates later the problem is gone. I think it must have been a bug. The question how to debug such issue remains open.