The problem of correct operation of the additional keyboard is quite common on nix platforms. Users faced with such a task sometimes drive themselves into a dead end, sinning on the "curvature" of the latest version of the distribution kit, although the solution to the problem lies on the surface.
Necessary
Operating system of the Linux family
Instructions
Step 1
The most susceptible to this disease are fresh distributions (alpha and beta versions), mainly Debian-based systems, namely Ubuntu and Linux Mint. First of all, you need to find out the reason for disabling the additional keyboard, because she could not do it without permission.
Step 2
Test the operation of the NumLock keyboard buttons in different applications, games, as well as the console (standard and virtual). Pay attention to its use in games, you need to assign actions to the buttons used (from 1 to 9). Do not be afraid to assign all buttons, the setting can always be returned to its original form.
Step 3
With a working NumLock, the keys should function in applications such as "Standard Calculator", Gedit and Internet browsers (programs that work with this type of keyboard directly). To launch the virtual console, use the keyboard shortcut Ctrl + alt="Image" + T, and for the usual Ctrl + alt="Image" + F1 (F1-F6).
Step 4
If the problem persists in all of the programs listed above and there is a chance that the keyboard might not work, then you have activated the Mouse Pointer Control from the Keyboard feature. To cure this disease is simple, just press the Ctrl + Shift + NumLock key combination again.
Step 5
To avoid subsequent attempts to accidentally press these keys, you need to go to the "System" menu and select the "Keyboard" item from the "Parameters" list. In the window that opens, go to the "Mouse buttons" tab, uncheck the item "Allow the pointer to be controlled from the keyboard." Now this problem will no longer bother you.
Step 6
In some cases, you may need to reboot the system or just restart the "x" (x-server). To do this, press the key combination Ctrl + alt="Image" + Backspace.
