i have no more problems with edgy and the problem with dapper appears to have been related to the fact that it was a luks encrypted drive
** Changed in: acpi-support (Ubuntu) Status: Needs Info => Rejected -- hibernation begins to resume again after 1 minute of working https://launchpad.net/bugs/37186 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs