Datasheet

“main” (Installation and Administration) — 2004/6/25 — 13:29 — page 373 — #399
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17
Power Management
POWERSAVE_EVENT_BUTTON_LID_CLOSED="screen_saver"
When the lid is closed, the screen saver is activated.
Further throttling of the CPU performance is possible if the CPU load does
not exceed a specified limit for a specified time. Specify the load limit in
POWERSAVED_CPU_LOW_LIMIT and the time-out in POWERSAVED_CPU_-
IDLE_TIMEOUT.
17.5.4 Troubleshooting
All error messages and alerts are logged to /var/log/messages. If you
cannot find the needed information, use the variable DEBUG for power-
save in the file /etc/sysconfig/powersave/common to increase the
verbosity of the messages. Increase the value of the variable to 7 or even
15 and restart the daemon. The error messages in /var/log/messages
will now be more detailed, enabling you to identify the error. The following
items cover the most frequent problems in connection with powersave.
ACPI Activated, Battery States and Buttons 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.
Request 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 http://acpi.
sourceforge.net/dsdt/tables. Check if the file is decom-
pressed and compiled as shown by the file extension .aml (ACPI
machine language). If this is the case, continue with step 3.
2. If the file extension of the downloaded table is .asl (ACPI source
language), it must be compiled with iasl (package pmtools). To do
this, 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.
3. Copy the file DSDT.aml to any location (/etc/DSDT.aml is rec-
ommended). Edit /etc/sysconfig/kernel and adapt the path
to the DSDT file accordingly. Start mkinitrd (package mkinitrd).
373SUSE LINUX Enterprise Server