Owners Manual

NOTE: There is no loss in functionality.
Red Hat Enterprise Linux 6.1 stops responding when iDRAC6 is
reset
Description Red Hat Enterprise Linux 6.1 stops responding when iDRAC6 is reset on PowerEdge systems.
Cause This issue occurs due to the USB error handling code.
Known issues in Red Hat Enterprise Linux 6.2
Red Hat Enterprise Linux 6.2 displays a no DIMM labels error
message in the /var/log/messages log le
Description After Red Hat Enterprise Linux 6.2 installation, the OS event log (/var/log/messages) contains the following
errors:
edac: edac-ctl: Error: No dimm labels for Dell Inc.
NOTE: This does not have any impact on functionality.
Cause The admin utility edac-ctl displays the error message when the model numbers of the systems are not populated in
the /etc/edac/labels.db le.
Red Hat Enterprise Linux 6.2 displays MCE error message
in /var/log/messages and dmesg log les
Description
Red Hat Enterprise Linux 6.2 64-bit systems may display Machine Check Exception (MCE) errors during a thermal
event when the power budget is set in iDRAC.
The following error message is displayed in the /var/log/messages log le and the dmesg log le:
[Hardware Error]: Machine check events logged.
This issue is also seen in Red Hat Enterprise Linux 6.1.
Workaround A x will be available in a later Red Hat Enterprise Linux update.
Cause The thermal interrupt handler triggers the error messages.
Add-on cards display biosdevname names instead of eth names
Description
For systems with SMBIOS version 2.5, the add-on cards display the biosdevname names instead of the eth
names.
Workaround Disable the biosdevname utility by typing the following command to the kernel command line parameter:
biosdevname=0.
26 Installation instructions and important information