Some additional information after reading a few threads in forums: The issue seems to be with various Acer Aspire models.
Also, some mention in a thread that disabling acpi during boot fixes the problem (acpi=0). However, that is not a feasible option for laptops. http://ubuntuforums.org/showthread.php?p=3899110#post3899110 Perhaps the problem is with Acer acpi? -- Failure to mount root filesystem, cause unknown https://bugs.launchpad.net/bugs/67256 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs