I have had a Toshiba Advanced Port Replicator III plus with my Toshiba Tecra A7 for over a year and everything was fine. Recently, the external monitor (Viewsonic VP2030b) quit working when the laptop is docked in the port replicator.
I can plug the monitor directly into the laptop and it works, but when I dock the laptop the external monitor says "no signal".
I've been through a series of diagnostics on resolution etc with Toshiba tech support, to no avail.
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