I've seen it referenced a few times on some webpages within the Apple website that Thunderbolt is compatible with HDMI, so was a little shocked to find that the outputted display image being sent from my MacBookPro8,3 through it's Thunderbolt port when in Boot Camp, will not fit properly to my newly acquired external LED display with matching 1080p resolution (that's 1920x1080 resolution being set on MBP and sent to the external display's 1920x1080). This is true despite using the usually last resort and fail safe 'just scan' setting on the external LED display. A good quality Thunderbolt to HDMI version 1.3/1.4 is being used.
The screen does however fit perfectly when in OS X 10.8.3 and only if using the 'just scan' picture mode setting; although strangely not when using '16:9' mode setting, nor 'original' mode setting which I though that it may have done but at least it works with 'just scan' so am happy there.
However in Bootcamp none of the three picture mode settings work and the picture is oversized (and therefore cropped) or too small. This is a REAL pain and the only temporary half resolve is to use one of the zoom mode picture settings which never acquires a perfect fit therefore loosing pixel lines either way from the zoom acting in steps (can't get precise sweet-spot).
Is there a possible fix for this?
It would appear to be the windows support 'drivers' for the Thunderbolt port that may need updating; on the basis that it works ok with 'just scan' setting mode when booted in OS X 10.8.3 but not when booted in Bootcamp (on the same machine, with exact same setup, display, cable, etc.). I believe the necessary information is not being sent out properly from Thunderbolt to HDMI under Bootcamp drivers,
(I'm not interested in using VGA adapter with separate audio leads)
I've already sent this info to the Apple Feedback page, but doubtful this problem/glitch will get addressed. Would be great if Apple does though (won't have to send back new external LED Display, or quit my treasured MacBook Pro).