I'm currently running 14.04 beta on a Lenovo Thinkpad Twist (s230u). As the OS boots into the login screen, the built-in mouse and keyboard are disabled. The touch screen remains active, however.

I've found a way around this: using the touch screen I reboot the system. As it boots for the second time, the keyboard is functional. The mouse however remains inactive until i log in.

I've experienced the same issues on 13.10. Any help is appreciated. Thnx!

2 Answers 2


There is a bug in several Linux distributions with keyboard/trackpad recognition.

You can fix with this line to /etc/default/grub

GRUB_CMDLINE_LINUX="i8042.nomux=1 i8042.reset"

Then update grub file with sudo update-grub

Check this link for details (this is for Mint distro, but same issue).


I had the same problem but found a solution by changing my BIOS settings of my Lenovo Flex 15 Easypad. I had to change the BIOS-setting "UEFI optimized for Windows 8" (was preinstalled on this laptop, I erased it and installed Lubuntu 14.04) to "Other OS". That did the trick for me.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.