SDB:ACPI Problems on Medion Laptop MD41700

From openSUSE

Version: 9.1

Symptom

When installing SUSE LINUX 9.1 on a Medion laptop MD41700, the keyboard cannot be addressed. In addition, the system occasionally crashes.

Cause

A wrong ACPI interrupt routing on the laptop causes the problems.

Solution

If you are installing from scratch, select your language from the installation menu by pressing F4. Then insert the following parameter as a boot option:

acpi_irq_balance

The boot parameter is automatically added to the boot loader configuration. You can now proceed with the installation.

Procedure for an Installed System

The system has probably been installed with a disabled ACPI. Although the system basically works, many important functions, such as the temperature or battery charge level readout, are not available.

To activate ACPI, replace the parameter

acpi=off

with:

acpi_irq_balance

in the boot loader configuration. The exact procedure is described in the support database article SDB:Inserting Boot Options Permanently