See: "Bug: Advanced battery query causes EC hang" http://www.thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_issues
I am going to try upgrading my bios, but this is tricky because it requires windows and I am not running windows. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/992720 Title: [Lenovo E420s] Hitting brightness keys causes machine to lock up To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/992720/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
