I have a similar problem, though my pc (dell inspiron 14r 5420) is connected to my home theater via HDMI and my HT to my TV via HDMI. I can get my PS3 to play 6channel sound but not my pc. the only HDMI output in it is on the intel graphics(HD4000). it´s a driver issue and can´t be solved by downloading the latest. Nvidia had a similar driver problem but it was sorted out, said that the card was comunicating with the TV directly and providing the supported TV audio formats only they made driver upgrades and it disappeared. if only intel had corrected it already or my pc had the HDMI on the Nvidia card instead of intel´s, I wouldn´t have this problem. Is there a fix such as a specific driver for the case?
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