I have trouble with the numeric keypad (NumLock keys) being unusable while typing.
While I don't think it's GUI specific, this happens both in Gnome and KDE. Sometimes it works in TTY, other times it fails. If I press the NumLock key nothing happens, and the response is the same.
I cannot use any of the keys except Ins, which repeats text after Backspace is used.
EDIT:
xev output, on NumLock press/release
KeyPress event, serial 33, synthetic NO, window 0x2800001,
root 0x101, subw 0x0, time 389867, (311,217), root:(319,313),
state 0x0, keycode 77 (keysym 0xff7f, Num_Lock), same_screen YES,
XLookupString gives 0 bytes:
XmbLookupString gives 0 bytes:
XFilterEvent returns: False
KeyRelease event, serial 33, synthetic NO, window 0x2800001,
root 0x101, subw 0x0, time 389867, (311,217), root:(319,313),
state 0x10, keycode 77 (keysym 0xff7f, Num_Lock), same_screen YES,
XLookupString gives 0 bytes:
XFilterEvent returns: False
Best Answer
This command worked for me on Linux Mint and Ubuntu using XFCE with a CMStorm keyboard.
For some reason, activating numlock will make the keys move my mouse and deactivating numlock will set the keys to the correct characters. I suppose this is good because now I don't have to enable numlock and I can save a very small amount of electricity.
Source: https://forum.kde.org/viewtopic.php?f=216&t=106658