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Troubleshooting Installation Issues
Installation issues that you may encounter with your LifeSize system typically involve issues
with VGA output, improperly connected cables, or network bandwidth or connectivity. For
information about troubleshooting other issues that users may encounter with LifeSize
systems refer to the LifeSize Video Communications Systems User Guide.
Improperly connected or loose cables are common causes of problems with hardware units.
When investigating a system problem, first inspect all the external controls and cable
connections. Ensure that connections are correct and secure, and that nothing is obstructing
the cables.
Display Issues with VGA Output
Some displays do not support automatic detection of their VGA display capabilities and
LifeSize systems are unable to detect the monitor. The following conditions may occur with
some VGA monitors:
•
Failure to read the Extended Display Identification Data (EDID) of the display.
The system detects the display as VGA, but cannot determine its supported resolutions.
The systems configures the display output to VGA at 1280x768. EDID is a VESA
standard data format that contains general information about a display and its
capabilities, including vendor information, maximum image size, color characteristics,
factory pre-set timings, frequency range limits, and character strings for the display
name and serial number.
•
Failure to detect the display as a VGA device.
The system configures the output to 720p. Most VGA monitors display this signal;
however, the data is not centered and may be tinted green. You must manually
configure the appropriate display as VGA to resolve this issue.
•
The resolution of the display is unsupported.
The system requires displays that support 1280x720 or 1280x768 resolutions. If a VGA
display EDID does not contain one of these resolutions, The system automatically
configures it for 1280x768. Most multi-sync VGA displays can adjust to this resolution
and scale the data to fit the screen, which is typically 4x3. If scaling occurs, the resulting
image may be slightly distorted. For example, a display that only supports 1024x768 will
scale the 1280x768 image causing it to appear narrow. If a display cannot adjust to the
1280x768 resolution, its screen remains blank. The system does not support displays
that do not support 1280x768.
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LifeSize Room Installation Guide
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