Matthew, here are some ideas. First, remove the battery so you can reboot over and over without long waits. If it does not boot faster now maybe it is a different problem.
Now the next thing is to prove the grub acpi command is working. Restart and catch bootup at the grub menu. Then enter the 'e' command and it will list an editable set of steps to be performed for the selected boot entry. Insert the line "acpi /boot/badname.aml" and press F10 to run these steps (and boot). There should be a error for the bad acpi line and a prompt to press key to continue. Press key and let it boot. Now we know that grub tries to process the acpi command. Now do the same thing again, except this time insert the correct filename in the acpi line "acpi /boot/DSDT.aml" and press F10 and let it boot. Once booted, run "dmesg | grep DSDT" and verify the date after INTL is 201000528 (or at least not 20061109). If the date does verify, power down, put the battery back in, reboot and again catch it at the grub menu. Use 'e' to edit the boot sequence and insert "acpi /boot/DSDT.aml" and press F10 to boot. If it boots fast (and works a couple times in a row), then eventually it can be made to work, just need to figure out why grub.cfg changes are not persisting. If the "dmesg | grep DSDT" line did not indicate that the modded table was loaded I'm not sure what to investigate next. Here are things that might be different compared to my system. - BIOS version. On mine, "dmesg | grep Z580" shows "BIOS 5FCN89WW 08/27/2012" - UEFI setting in BIOS setup. On mine, it is set to disabled, which causes another field in the menu and it is set to legacy". Maybe tables cannot be loaded in UEFI without doing something else? -- 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
