Hi, I'm using KDE Plasma 5.10.5 with Debian Sid. The keyboard of my laptop doesn't work on KDE Plasma after I have connected a USB keyboard. I pressed Ctrl + Alt + F1 (to open tty1) and the keyboard works perfectly (both), but when I switch to tt7 my system plays sound notification like when a device is disconnected and the laptop keyboard stops working again. I must connect the USB keyboard to log in with SDDM. I searched Google but I did not find any solution. When I wrote

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xinput list

, the output of the console is this:

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⎡ Virtual core pointer                          id=2    [master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer                id=4    [slave  pointer  (2)]
⎜   ↳ Logitech USB Receiver                     id=17   [slave  pointer  (2)]
⎜   ↳ Logitech USB Receiver                     id=19   [slave  pointer  (2)]
⎜   ↳ USB USB Keykoard                          id=9    [slave  pointer  (2)]
⎜   ↳ SynPS/2 Synaptics TouchPad                id=13   [slave  pointer  (2)]
⎣ Virtual core keyboard                         id=3    [master keyboard (2)]
    ↳ Virtual core XTEST keyboard               id=5    [slave  keyboard (3)]
    ↳ Power Button                              id=6    [slave  keyboard (3)]
    ↳ Video Bus                                 id=7    [slave  keyboard (3)]
    ↳ Power Button                              id=8    [slave  keyboard (3)]
    ↳ HP Truevision HD                          id=11   [slave  keyboard (3)]
    ↳ AT Translated Set 2 keyboard              id=12   [slave  keyboard (3)]
    ↳ HP WMI hotkeys                            id=14   [slave  keyboard (3)]
    ↳ HP Wireless hotkeys                       id=15   [slave  keyboard (3)]
    ↳ Logitech USB Receiver                     id=18   [slave  keyboard (3)]
    ↳ USB USB Keykoard                          id=10   [slave  keyboard (3)]
    ↳ USB USB Keykoard                          id=16   [slave  keyboard (3)]


And this when I wrote

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xinput --list-props 12

:

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Device 'AT Translated Set 2 keyboard':
        Device Enabled (139):   1
        Coordinate Transformation Matrix (141): 1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
        libinput Send Events Modes Available (259):     1, 0
        libinput Send Events Mode Enabled (260):        0, 0
        libinput Send Events Mode Enabled Default (261):        0, 0
        Device Node (262):      "/dev/input/event0"
        Device Product ID (263):        1, 1


Thanks by any suggestions.