Welcome to FT!
I get the feeling that Thales in-seat power cannot supply power to more power-hungry laptops.
Out of interest, what is the wattage of your laptop charger? This may tell you the reason.
I haven't had any problems with my ULV laptop (one of the small Sony thing) or MacBook Air but both are far from power-hungry.
Last edited by LTN Phobia; Oct 20, 2013 at 10:22 am