This is one of the wackiest and weirdest problems I have ever encountered. My keyboard was working absolutely fine untill yesterday on Ubuntu 13.04. However, when I boot to Ubuntu today, I suddenly find that all the keys work, but I have to press and keep on holding them for about a second for them to work.

• This behavior is true for all the keys except for Num Lock, Caps Lock and Scroll Lock keys, the indicator for them on my keyboard lights up as soon as I press those keys.




• The keyboard works fine at the login screen where I put my password.




• The keyboard also works normally if I use the Guest session instead of my normal user account.




• I have not done any key-remappings and using the standard English (US) keyboard layout.




• I have fiddled around with the settings for Keyboard in System Settings, but to no avail.




• I have Windows 7 as dual-boot and the keyboard works perfectly well on it.

Why am I facing such a behavior and how to normalize this?

PS: Using Logitech Classic Keyboard K100 (USB Model).