adding "noapic nolapic" to the kernel boot options in /boot/grub/menu.lst seems to solve the following problems for me:
complete system freeze / lockup / crash when: - closing the laptop lid - pressing either FN+UP or FN+DOWN - unplugging the power supply (changing to battery power) my grub entry: ------------- title Ubuntu, kernel 2.6.17-10-generic root (hd0,1) kernel /boot/vmlinuz-2.6.17-10-generic root=/dev/sda2 ro splash notsc noapic nolapic initrd /boot/initrd.img-2.6.17-10-generic quiet savedefault boot my system: Dell Inspiron 640m / E1405 Core 2 Duo T7200 Intel 945GM -- Notebooks freezes after closing lid or pressing some FN key combination https://launchpad.net/bugs/65027 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
