SuSE Linux: Version 8.1
You want to control the operation of ACPI. The new ACPI code is already used in SuSE Linux 8.1 and newer versions. The new ACPI code has been adopted because many new computers use ACPI to control their interrupt handling. In addition, the power management of new machines is no longer based on APM, but on ACPI. On the other hand, some old computers might have problems due to an incomplete or unstable ACPI implementation in the BIOS. For more background information, refer to:
http://www.suse.de/en/private/products/suse_linux/i386/acpi.html
Due to the reasons mentioned above, SuSE Linux 8.2 contains several kernel parameters to control the ACPI code:
acpi=off
-- This parameter disables the whole ACPI system. This
may prove very useful, for example, if your computer does not support ACPI or if you think
the ACPI implementation might cause some problems.acpi=oldboot
-- Deactivates the ACPI system almost completely:
only the components required for the boot process will be used.acpi=force
-- Activates the ACPI system even if your computer BIOS is
prior to 2000. This parameter overwrites acpi=off
.pci=noacpi
-- This parameter disables the PCI IRQ routing in the
new ACPI system.The parameters included in SuSE Linux 8.1 are:
acpi=off
-- This parameter disables the whole ACPI system. This
may prove very useful, for example, if your computer does not support ACPI or if you think
the ACPI implementation might cause some problems.acpi=oldboot
-- Deactivates the ACPI system almost completely:
only the components required for the boot process will be used.pci=acpi
-- This parameter activates the PCI IRQ routing of the
new ACPI system. The old IRQ routing is the one normally used for compatibility reasons.
The parameters pci=noacpi
and acpi=force
are not included in SuSE Linux 8.1.
The update kernel available for SuSE Linux 8.1 acts in the same way as the SuSE Linux 8.2 kernel.
When using ACPI on multiprocessor computers, APIC must often be activated, too. This can be done
with the kernel parameter apic
.
These kernel parameters can be activated before the installation by passing them to the kernel at the boot prompt. If you do this before installing, the parameters will be automatically adopted by the boot loader configuration. It is also possible to enter the parameters in the boot loader configuration in YaST2. For more information about YaST2's boot loader configuration, refer to the manual. Further information on ACPI is available on the home page of the ACPI development project (http://acpi.sf.net).
SDB-81_acpi
)