Reactivating this because the time has come to buy a new one -- if anyone knows some specific brand/models/configs of *laptops* that bitstream lossless *surround* (i.e., not crippled to 2-channel) audio, please post.
Even today it's not straightforward from reading reviews and specs whether a given laptop does this -- though I am assuming that when Blu-ray and Dolby TrueHD capability are part of the spec, that should mean 'can stream lossless surround audio from its HDMI port'.