My Dell Vostro 3500 have key Page Up always pressed. Try https://www.keyboardtester.com/ and wait a bit, it start to show Page Up keep pressing. So I want to disable it. (I have removed this key both cover and plastic/rubber) but no luck. So I tried to disable it by software. https://askubuntu.com/questions/245333/getting-character-key-code-mappings-in-ubuntu https://ubuntuforums.org/showthread.php?t=1218221 https://superuser.com/questions/775785/how-to-disable-a-keyboard-key-in-linux-ubuntu Run xev -even keyboard to get keycode pressed. My Page Up key died and I can not pressed it (press not go page up) but randomly keep pressing. Page Down 117, Down 116, Home 110, End 115... I guest Page Up my keyboard is 118. I will update keyboard related problems that I've experienced later. Many interesting behaviors and symptoms. I have replaced about 10 keyboard for many Laptop and PC (always Chinese one since original not available or too expensive). Wi...