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ctrl not seen in xev

cn flag
HuO

i use xubuntu 20.04

my hardware is : 700-15ISK Laptop (ideapad) - Type 80RU

One day (maybe after an update, i can't remember) the ctrl button seemed to act strangely, then it suddenly did not work anymore. Using xev i can see no signal is picked up when i press ctrl; what is stranger is that both ctrl buttons seem to create no signal at all in xev. shift button works. i may add that no physical damage is visible on the button, nor when i press it.

I had problems with fr keyboard previously which i recently solved by adding "setxkbmap fr" to my home profile file. But the ctrl button was not working (and still is not working) before I made this (home/.profile) change.

Do you have any idea how to solve this problem ? / as i code on this laptop it really is difficult to code without the ctrl shortcuts.

Any help would be very welcome :)

Have a great day,

bwd

waltinator avatar
it flag
The `Ctrl` key does not send a keystroke for `xev` to detect, it simply clears a bit (`0x40`) in the next letter typed. See `man ascii`.
cn flag
HuO
thanks a lot, indeed it does not solve my problem, but thanks
cn flag
HuO
supplementary question: if ctrl does not send a keystroke for xev to detect, then how could I explain the comment {near the "xev | grep 'keycode'"} on the webpage https://superuser.com/questions/248517/show-keys-pressed-in-linux //// """"state 0x0, keycode 37 (keysym 0xffe3, Control_L), same_screen YES,"""
cn flag
HuO
same question for the output of xev show there https://www.linuxquestions.org/questions/linux-desktop-74/ctrl-key-not-being-recognised-4175584236/
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