USB Virtual Desktop (Model U170) User Manual
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Troubleshooting
No graphics are displayed on a U170 station.
If there is nothing being displayed on a U170, station check the following:
1. Is the blue light on the U170 on? If not, the device has not yet been enumerated to the
host PC. This could take up to 10-20 seconds if this is the first time connecting.
2. If the blue light is not on, check to make sure the unit is plugged in to a USB 2.0 port. If
connecting to a hub, make sure the hub is powered.
3.
If the display is “gray” it is possible that you have not registered the device and it has
timed out. Run the License wizard. See the section on product registration that appears
earlier in this manual for information.
PC will not boot after attaching U170 virtual desktop.
Some older PCs have difficulty with USB 2.0-composite devices. There are two potential ways
to solve this 1) attach the U170 after booting, 2) try a separate USB PCI card 3) disable legacy
USB support in the BIOS.
U170 will not register.
Run the License wizard, when the system scans and lists all of the connected U170 devices
make sure the serial number of each device is displayed. If not, try unplugging and re-plugging
the U170 device, wait for enumeration and press refresh. In some rare cases, it may be
necessary to unplug the monitor connected to the U170 when registering devices.
Sound does not play.
When setting up multiple U170 devices for the first time, there are MANY items for the host PC
to discover and the host PC may not enumerate all devices correctly the first time. Therefore a
second reboot is advised to ensure that all devices are enumerated properly (this second reboot
is only necessary after new devices are added).
Extended boot time for the OS
When multiple U170 devices are connected to the host PC, the host
PC’s normal boot time will
be extended for each unit added. Remember that the OS and host PC are supporting more
users and additional boot time is required.
For more troubleshooting information, visit the NComputing Knowledge Base in the Support
section of the NComputing website, at
www.ncomputing.com
.
Glossary
Administrator
: a person who is responsible for managing a multi-user computing environment,
such as a local area network (LAN). Administrator responsibilities typically include: installing and
