The recompiled DSDT is working for me on Ubuntu 12.04. I've upgraded the kernel to 3.5.0-32 and booting nicely.
I just inserted the acpi line in grub.cfg here: acpi /boot/DSDT.aml linux /boot/vmlinuz-3.5.0-32-generic root=UUID=ad28a027-ec44-4c73-b42c-2fdc6e90b6dd ro quiet splash $vt_handoff initrd /boot/initrd.img-3.5.0-32-generic Thanks to Tom and everyone who added support here. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1093217 Title: Ubuntu 12.04/12.10/13.04 10-20min boot delay (From 3.2.0.29->3.8.0.19) [Lenovo IdeaPad Z580] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1093217/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs