So, I just update the BIOS Update to the Version 1.17, thanks for the hint ;) , and now it works! :) Ubuntu 64-Bit boots without any Problems and it seems, that all Functions are working.
But i think i have one little Bug detected. If i want to restart Ubuntu, it hangs bevor Ubuntu should shut down. ** Changed in: linux (Ubuntu) Status: Confirmed => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/990110 Title: [Lenovo L420] System will not boot Precise installer kernel To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/990110/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs