Users Guide

Important Information

The latest update to Red Hat Enterprise Linux 5 is Update 10. It provides fixes for certain issues found in the previous

releases and supports the Dell OpenManage components.

A few modes and components that are not supported are listed below:

• Hibernation and sleep (S3, S4) mode is not supported on Dell systems.

• FCoE on Broadcom 57810 is not supported on Red Hat Enterprise Linux 5.

• PERC S100 and S300 RAID controllers are not supported with Red Hat Enterprise Linux. For more information,

see the knowledge base article 19840 at redhat.com.

General Issues

DKMS Missing File common.postinst Message Displayed

Description

The warning /usr/lib64/dkms/common.postinst does not exist, is displayed

during installation of the DKMS driver rpm, when Library MACRO used in the specification file

expands to /usr/lib64. The file common.postinst is available in /usr/lib/dkms.

Workaround Create symbolic link for the file common.postinst in the/usr/lib/dkms directory.

Cause The warning is caused because the library MACRO used in the DKMS specification file

expands to /usr/lib64.

IPMI Commands May Result In High Processor Utilization

Description On PowerEdge systems that are managed through IPMI, the kipmid thread may consume high

processor resources when you issue IPMI commands to the BMC.

Workaround

Set the option kipmid_max_busy_us to the ipmi_si driver module.

This option can be set by creating a file ,/etc/modprobe.d/ipmi.conf with the following line and

reloading the ipmi_si module:

options ipmi_si kipmid_max_busy_us=300

KVM Switches May Cause Video Issues During Installation

Description Certain keyboard, video, and mouse (KVM) switches do not pass the proper Display Data

Channel (DDC) information to the video subsystem, often providing wrong information to the X

Window system regarding monitor capabilities.

Workaround Connect the monitor directly into the system while installing the operating system and

configuring X Window.