Troubleshooting monitor or video problems
Use this information to resolve monitor or video problems.
Blade servers contain a video controller. Blade servers send video signals to the
BladeCenter S chassis midplane, which routes the signal to the advanced
management module. When a cKVM card is installed in the blade server, the video
signal is sent to the advanced management module over the internal Ethernet
chassis network.
For local video, the advanced management module outputs the video signal to the
physical RGB connector on the back of the advanced management module. For
remote video, the advanced management module redirects the video signal over
TCP/IP to a Java-based remote control session.
Some IBM monitors have their own self-tests. If you suspect a problem with your
monitor, see the documentation that comes with the monitor for instructions for
testing and adjusting the monitor.
Blade servers send video signals to the BladeCenter S chassis midplane, which
routes the signal to the advanced management module. When a cKVM card is
installed in the blade server, the video signal is sent to the AMM over the internal
Ethernet chassis network.
IBM continually updates the support Web site with tips and techniques that you
can use to resolve any problems that you may be having with the BladeCenter S
system. Go to the BladeCenter support search Web site at http://www.ibm.com/
systems/support/supportsite.wss/search?brandind=5000020 to see if any service
bulletins have been generated. In the Search field, enter the following terms:
monitor, video, 8886, and retain. In addition, see the product information for the
specific blade server for more troubleshooting information.
Local and remote video not working
If both the local and remote video is not working, make sure that the controls are
adjusted correctly, the monitor is connected the advanced management module,
and the KVM is owned by a blade server that supports KVM.
Problem
Nothing appears on either the local video or the remote video.
Investigation
Perform these steps to resolve the problem:
1.
Make sure that the blade server support video (for example, the IBM
BladeCenter JS20 and JS21 blade servers do not support video.
2.
Verify that the monitor is turned on, and that the brightness and contrast
controls are adjusted correctly.
3.
Verify that the monitor is connected to the advanced management module.
4.
Verify that the KVM is owned by a blade server that supports KVM, and that
the blade server is powered on.
5.
Reseat the monitor cable.
6.
Replace the monitor.
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BladeCenter S Type 7779/8886: Problem Determination and Service Guide
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