I tried the new 2.6.28-rc2, which did not work. Then I tried 2.6.25.19, which worked with ACPI, but only some times. About every second time he hangs at the same point where the current Ubuntu 8.10 kernel does. But sometimes he boots and acpi seems to work.
I attached output of dmesg when booting succeeded with 2.6.25.19.
I tried the new 2.6.28-rc2, which did not work. Then I tried 2.6.25.19, which worked with ACPI, but only some times. About every second time he hangs at the same point where the current Ubuntu 8.10 kernel does. But sometimes he boots and acpi seems to work.
I attached output of dmesg when booting succeeded with 2.6.25.19.