IOGear GCS1722 User Manual page 31

Symptom
Cannot switch ports Keyboard is incompatible with
by pressing [Scroll Scroll Lock invocation.
Lock] twice
Monitor does not Some graphics cards are incompatible
display after KVM with cable set hot plugging.
cable set is hot
plugged.
When switching Monitor is new or this is the first time
ports, the monitor installation.
does not display.
The PC's EDID has not passed through
to the monitor when switching ports.
Possible Cause
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Power off all devices on the installation; power off the switch; confirm
all KVM cables are properly connected; power on the switch; power
on the computers
Power off all devices on the installation; power off the switch; confirm
all KVM cables are properly connected; power on the switch; power
on the computers
Switch ports again and wait two or more seconds for the PC's EDID
to pass to the monitor.
Use the [d] hotkey to invoke Video
DynaSync one more time or switch
to another PC to reconnect the switch. See HSM Summary Table,
page 21.
Action