Hello there,
I have been having odd issue with KDE. I used KDD 5.20 on Debian 11 for few months now in wayland session. Now I switched to X session only to find that shortcut for paste is not working. shift+ins is working, and in console ctrl+shift+v is also functional. But elsewhere not. Mouse copy paste is working fine as well.

When I checked in xev I got this output for ctrl+v

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KeyPress event, serial 40, synthetic NO, window 0x7e00001,
    root 0x188, subw 0x0, time 22295396, (871,323), root:(871,352),
    state 0x0, keycode 37 (keysym 0xffe3, Control_L), same_screen YES,
    XLookupString gives 0 bytes:
    XmbLookupString gives 0 bytes:
    XFilterEvent returns: False

FocusOut event, serial 40, synthetic NO, window 0x7e00001,
    mode NotifyGrab, detail NotifyAncestor

FocusIn event, serial 40, synthetic NO, window 0x7e00001,
    mode NotifyUngrab, detail NotifyAncestor

KeymapNotify event, serial 40, synthetic NO, window 0x0,
    keys:  2   0   0   0   32  0   4294967168 0   0   0   0   0   0   0   0   0   
           0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   

KeyRelease event, serial 40, synthetic NO, window 0x7e00001,
    root 0x188, subw 0x0, time 22295740, (871,323), root:(871,352),
    state 0x4, keycode 55 (keysym 0x76, v), same_screen YES,
    XLookupString gives 1 bytes: (16) ""
    XFilterEvent returns: False

KeyRelease event, serial 40, synthetic NO, window 0x7e00001,
    root 0x188, subw 0x0, time 22295772, (871,323), root:(871,352),
    state 0x4, keycode 37 (keysym 0xffe3, Control_L), same_screen YES,
    XLookupString gives 0 bytes:
    XFilterEvent returns: False


When looking with xev, it shows that when using ctr+v it isn't detecting v as being pressed, rather something is suppressing it. I have tried to remove and place it back but same effect. I am at loss as to why it is happening. if anyone knows reason or where to look please reply.

Also, if it could be solved by just copying over shortcut settings from new user I could do that as well, but I am unsure which configuration files to copy over. But I would be more interested in reason of this issue.

Thanks in advance.

I have deleted khotkeysrc and kglobalshortcutsrc from .config and let KDE generate default one. This solve the issue, I lost my custom shortcuts, didn't try save them before hand, as I didn't had many, anyway.