Help wanted: ACPI and serial ports

Help wanted: ACPI and serial ports

[Jean-François Rameau]

Hi everybody,

I'm facing a weird problem with a motheboard from 
http://www.flytech.com/product-18.html / B79 model.

I'm using a 2.4.22 kernel.

The PC must power off once a day and then restarts some hours after 
using the RTC Power On bios feature.
Problem: if RTC Power On is up, PC never stops (it reboots immediately 
after the power off call). If I turn off RTC power on feature, the PC 
stops and power is off.
Looking at dmesg, I see ACPI: Interpreter disabled.

So I tried to set acpi=force on kernel's command line: curiously, the 
kernel loads a asus_acpi module.
Problem: if asus_acpi is loaded, and RTC Power On is up, the PC never 
stops. If a remove the module, that's OK: the PC stops and power is off.

Seeems to be OK, no ?

The PC uses 4 serial ports: if I set acpi=force, I can't use serial port 
3 and 4 anymore, even using setserial call.

Is there something I can do to track the problem ?

Regards,

jean-françois


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