Public bug reported: https://launchpad.net/malone/bugs/36312 Affects: linux-source-2.6.15 linux-image-2.6.15-19-686 (Ubuntu) Severity: Normal Priority: (none set) Status: Unconfirmed Description: In Toshiba Satellite Pro 4300 (pentium III, copermine, 650MHz) hang at shutdown with 686 kernel. With 386 kernel it's fine. Perhaps APM/ACPI problem?