Novell LINUX ENTERPRISE SERVER 10 SP2 - INSTALLATION AND ADMINISTRATION Installation Manual page 544

28.5.4 Troubleshooting
All error messages and alerts are logged in the file /var/log/messages. If you
cannot find the needed information, increase the verbosity of the messages of powersave
using DEBUG in the file /etc/sysconfig/powersave/common. Increase the
value of the variable to 7 or even 15 and restart the daemon. The more detailed error
messages in /var/log/messages should help you to find the error. The following
sections cover the most common problems with powersave.
ACPI Activated with Hardware Support but Functions
Do Not Work
If you experience problems with ACPI, use the command dmesg|grep -i acpi
to search the output of dmesg for ACPI-specific messages. A BIOS update may be
required to resolve the problem. Go to the home page of your laptop manufacturer, look
for an updated BIOS version, and install it. Ask the manufacturer to comply with the
latest ACPI specification. If the errors persist after the BIOS update, proceed as follows
to replace the faulty DSDT table in your BIOS with an updated DSDT:
1 Download the DSDT for your system from
2 If the file extension of the downloaded table is .asl (ACPI source language),
3 Copy the file DSDT.aml to any location (/etc/DSDT.aml is recommended).
526 Installation and Administration
.net/dsdt/index.php. Check if the file is decompressed and compiled as
shown by the file extension .aml (ACPI machine language). If this is the case,
continue with step 3.
compile it with iasl (package pmtools). Enter the command iasl -sa
file.asl. The latest version of iasl (Intel ACPI compiler) is available at
http://developer.intel.com/technology/iapc/acpi/
downloads.htm.
Edit /etc/sysconfig/kernel and adapt the path to the DSDT file accord-
ingly. Start mkinitrd (package mkinitrd). Whenever you install the kernel
and use mkinitrd to create an initrd, the modified DSDT is integrated and
loaded when the system is booted.
http://acpi.sourceforge