Disabling AHCI mode for the sata hard drive in the BIOS Setup was necessary to get suspend/hibernate working on my Fujitsu-Siemens Amilo Si 1520. But it only worked with the 386 kernel (2.6.15-23-386).
With the 686 kernel it either behaves as aliet's machine, or only locks the screen (not hangs it, the kind of lock you type your password to release). -- Black screen after suspend to ram with acpi https://launchpad.net/bugs/47622 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
