Hello, I'm seeing the same behavior on my machine. (Dell Inspiron 3847)
Here is the output of the commands you specified above (I have updated the bios to the most recent version, A05): $ sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date A05 08/18/2014 I am able to use the keyboard and mouse on kernel version 3.13.0-24-generic. All newer versions of the kernel are exhibiting the same Xorg behavior. I have also tried disabling numlock on boot, which doesn't resolve the problem for me. ** Changed in: xorg (Ubuntu) Status: Incomplete => New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1330255 Title: Unable to Detect USB Mouse and Keyboard To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1330255/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs