I tested with the latest daily version of ubuntu and the problem is solved.
Also, Toshiba released version 1.6 of the BIOS, and this solved the problem for Ubuntu 13.10 This is not an issue anymore. Thank you for your help. ** Changed in: linux (Ubuntu) Status: Incomplete => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1282852 Title: [Toshiba Satellite S55-A5176] Ubuntu 13.10 does not boot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1282852/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs