FN, Cursor and numeric keypad keys not working on Ubuntu 18.04

[twjanes]

The main alpha and numeric keys work fine but that is all.
Observing the output of tests/events shows

`//Pressed 1
0000000f to 1 at 19.541: Key 0x0031 Scancode 0x000a (1) (1) (with no mods) was pressed
00000010 to 1 at 19.547: Character 0x00000031 (1) input
00000011 to 1 at 19.672: Key 0x0031 Scancode 0x000a (1) (1) (with no mods) was released
//Pressed <ESC>
Error: Invalid scancode
00000012 to 1 at 21.521: Key 0xffffffff Scancode 0x0009 (UNKNOWN) (with no mods) was pressed
Error: Invalid scancode
00000013 to 1 at 21.718: Key 0xffffffff Scancode 0x0009 (UNKNOWN) (with no mods) was released
Error: Invalid scancode
00000014 to 1 at 21.723: Key 0xffffffff Scancode 0x0009 (UNKNOWN) (with no mods) was released
Error: Invalid scancode
//Pressed <FN_1>
00000015 to 1 at 23.766: Key 0xffffffff Scancode 0x0043 (UNKNOWN) (with no mods) was pressed
Error: Invalid scancode
00000016 to 1 at 23.924: Key 0xffffffff Scancode 0x0043 (UNKNOWN) (with no mods) was released
Error: Invalid scancode
00000017 to 1 at 23.930: Key 0xffffffff Scancode 0x0043 (UNKNOWN) (with no mods) was released
//Pressed <UP>
_Error: Invalid scancode
00000018 to 1 at 25.549: Key 0xffffffff Scancode 0x006f (UNKNOWN) (with no mods) was pressed
Error: Invalid scancode
00000019 to 1 at 25.635: Key 0xffffffff Scancode 0x006f (UNKNOWN) (with no mods) was released
Error: Invalid scancode
0000001a to 1 at 25.640: Key 0xffffffff Scancode 0x006f (UNKNOWN) (with no mods) was released
//Pressed <KeyPad 5>
Error: Invalid scancode
0000001b to 1 at 27.894: Key 0xffffffff Scancode 0x0054 (UNKNOWN) (with no mods) was pressed
Error: Invalid scancode
0000001c to 1 at 27.980: Key 0xffffffff Scancode 0x0054 (UNKNOWN) (with no mods) was released
Error: Invalid scancode

This is on a Dell laptop with US keyboard. I have also tried a UK full size keyboard.

Tim.

[twjanes]

Here is a workaround, I don't think this is a correct fix, the comments indicate this table should only be the printable chars not all, but it seems to work for me. I do not know enough about X11 keyboard handling to give a correct fix.

In x11_init.c sdd the following to the table in CreateKeyTables()

            else if (strcmp(name, "ESC") == 0) key = GLFW_KEY_ESCAPE;
            else if (strcmp(name, "FK01") == 0) key = GLFW_KEY_F1;
            else if (strcmp(name, "FK02") == 0) key = GLFW_KEY_F2;
            else if (strcmp(name, "FK03") == 0) key = GLFW_KEY_F3;
            else if (strcmp(name, "FK04") == 0) key = GLFW_KEY_F4;
            else if (strcmp(name, "FK05") == 0) key = GLFW_KEY_F5;
            else if (strcmp(name, "FK06") == 0) key = GLFW_KEY_F6;
            else if (strcmp(name, "FK07") == 0) key = GLFW_KEY_F7;
            else if (strcmp(name, "FK08") == 0) key = GLFW_KEY_F8;
            else if (strcmp(name, "FK09") == 0) key = GLFW_KEY_F9;
            else if (strcmp(name, "FK10") == 0) key = GLFW_KEY_F10;
            else if (strcmp(name, "FK11") == 0) key = GLFW_KEY_F11;
            else if (strcmp(name, "FK12") == 0) key = GLFW_KEY_F12;
            else if (strcmp(name, "UP") == 0) key = GLFW_KEY_UP;
            else if (strcmp(name, "DOWN") == 0) key = GLFW_KEY_DOWN;
            else if (strcmp(name, "LEFT") == 0) key = GLFW_KEY_LEFT;
            else if (strcmp(name, "RGHT") == 0) key = GLFW_KEY_RIGHT;
            else if (strcmp(name, "INS") == 0) key = GLFW_KEY_INSERT;
            else if (strcmp(name, "DELE") == 0) key = GLFW_KEY_DELETE;
            else if (strcmp(name, "TAB") == 0) key = GLFW_KEY_TAB;
            else if (strcmp(name, "BKSP") == 0) key = GLFW_KEY_BACKSPACE;
            else if (strcmp(name, "CAPS") == 0) key = GLFW_KEY_CAPS_LOCK;
            else if (strcmp(name, "RTRN") == 0) key = GLFW_KEY_ENTER;
            else if (strcmp(name, "LFSH") == 0) key = GLFW_KEY_LEFT_SHIFT;
            else if (strcmp(name, "RTSH") == 0) key = GLFW_KEY_RIGHT_SHIFT;
            else if (strcmp(name, "LCTL") == 0) key = GLFW_KEY_LEFT_CONTROL;
            else if (strcmp(name, "LALT") == 0) key = GLFW_KEY_LEFT_ALT;
            else if (strcmp(name, "SPCE") == 0) key = GLFW_KEY_SPACE;
            else if (strcmp(name, "RALT") == 0) key = GLFW_KEY_RIGHT_ALT;
            else if (strcmp(name, "RCTL") == 0) key = GLFW_KEY_RIGHT_CONTROL;
            else if (strcmp(name, "PGUP") == 0) key = GLFW_KEY_PAGE_UP;
            else if (strcmp(name, "PGDN") == 0) key = GLFW_KEY_PAGE_DOWN;
            else if (strcmp(name, "HOME") == 0) key = GLFW_KEY_HOME;
            else if (strcmp(name, "END") == 0) key = GLFW_KEY_END;
            else if (strcmp(name, "NMLK") == 0) key = GLFW_KEY_NUM_LOCK;
            else if (strcmp(name, "KPDV") == 0) key = GLFW_KEY_KP_DIVIDE;
            else if (strcmp(name, "KPMU") == 0) key = GLFW_KEY_KP_MULTIPLY;
            else if (strcmp(name, "KPSU") == 0) key = GLFW_KEY_KP_SUBTRACT;
            else if (strcmp(name, "KPAD") == 0) key = GLFW_KEY_KP_ADD;
            else if (strcmp(name, "KPEN") == 0) key = GLFW_KEY_KP_ENTER;
            else if (strcmp(name, "KPDL") == 0) key = GLFW_KEY_KP_DECIMAL;
            else if (strcmp(name, "KP0") == 0) key = GLFW_KEY_KP_0;
            else if (strcmp(name, "KP1") == 0) key = GLFW_KEY_KP_1;
            else if (strcmp(name, "KP2") == 0) key = GLFW_KEY_KP_2;
            else if (strcmp(name, "KP3") == 0) key = GLFW_KEY_KP_3;
            else if (strcmp(name, "KP4") == 0) key = GLFW_KEY_KP_4;
            else if (strcmp(name, "KP5") == 0) key = GLFW_KEY_KP_5;
            else if (strcmp(name, "KP6") == 0) key = GLFW_KEY_KP_6;
            else if (strcmp(name, "KP7") == 0) key = GLFW_KEY_KP_7;
            else if (strcmp(name, "KP8") == 0) key = GLFW_KEY_KP_8;
            else if (strcmp(name, "KP9") == 0) key = GLFW_KEY_KP_9;

[elmindreda]

This is very similar to the solution being worked on in #1598, which should hopefully resolve this issue as well.

[elmindreda]

This should be fixed now with the work merged for #1598.