I have the same issue, and am not booting with noacpi. Attaching the requested files.
** Attachment added: "hald-addon-acpi-debug-logs.tar.gz" http://launchpadlibrarian.net/9733039/hald-addon-acpi-debug-logs.tar.gz -- hald-addon-acpi[5115]: segfault at 0000000025c831f8...error 4, 2.6.22-9 kernel acpi segfault https://bugs.launchpad.net/bugs/130221 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