ACPI Problem with Mythbuntu 8.10

[Kloensch]

Binary package hint: acpi

Hello,
I have problems to get work Acpi on mythbuntu 8.10. I did everything like it is written on this page: http://www.mythtv.org/wiki/ACPI_Wakeup. By entering cat /proc/driver/rtc I get (Initiate manually ):
rtc_time : 15:11:42
rtc_date : 2009-06-21
alrm_time : 15:02:03
alrm_date : ****-06-21
alarm_IRQ : no
alrm_pending : no
24hr : yes
periodic_IRQ : no
update_IRQ : no
HPET_emulated : no
DST_enable : no
periodic_freq : 1024
batt_status : okay

The problem is that my system doesn´t wake up. As you can see, the alarm date is in the past an I think that this is the problem to solve.
Motherboard MS-7104 ver 3.2
Thanks