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PowerChute Business Edition does not communicate on Redhat 5.0, 5.1, 5.2, and 5.3 with Xen virtualization software installed.

Issue:
PowerChute Business Edition does not communicate on Redhat 5.0, 5.1, 5.2, and 5.3 with Xen virtualization software installed.

Product Line:
PowerChute Business Edition

Environment:
Redhat 5.0, 5.1, 5.2, and 5.3 with Xen virtualization software installed

Cause:
Xen virtualization software installed, PCBE cannot communicate with the UPS because Xen opens the comm ports. Once open, PCBE can not use them for serial communications.

Solution:

If Xen is uninstalled or disabled, PCBE should have no issue with serial communications. Or, Prior to installing PowerChute, verify that a COM port is available. If a COM port is not available, you need to modify your Xen settings in /boot/grub/grub.conf. Refer to the Virtualization Guide for Red Hat Linux for more information on how to modify the Xen settings:
http://www.redhat.com/docs/manuals/enterprise/RHEL-5-manual/Virtualization-en-US/index.html