If you have read elsewhere of my increasing disillusionment with
Sony: I now feel they are an overpriced supplier of low quality
PCs. I'll never buy Sony again. It's probably not a surprise that I
have found yet another area where Sony is sub standard compared to
the other (significantly less expensive) laptops we have. Whereas
the Toshibas, Dells and HPs connect to an external monitor and
immediately remember their settings the Sony requires a trawl
through the hardware settings each and every time...
/support/faq/general/sony-vaio-enable-second-monitor.aspx