I have an acer aspire revo connected via HDMI to a 5.1 surround sound system. It uses the nvidia ION graphics chipset.

I can only get it into 2 channel stereo mode, as far as i can tell its supposed to be capable of 8 channel sound.

It has 64bit windows 7, and ive updated the HDMI Audio drivers.


7.1 surround is supported by HDMI but not by ION, every ION mainboard and computer I've found are 6 channel. Make sure your speakers are set to 5.1 under the sound panel in control panel. Also make sure 5.1 speakers are set in the sound card properties, usually realtek.

  • The Realtek sound manager is for the optical out on the front of the revo – Arcath Jan 17 '10 at 10:58
  • Ive swapped to using the optical out and it works fine – Arcath Feb 5 '10 at 9:32

5.1 sound works fine on my Revo with Windows 7 (x86).

and no, 7.1 (to the best of my knowledge) is NOT supported.

  • No idea. I can find any indication of anomolies on the voting, but they could be using sockpuppets. Will take some time later this evening to investigate globally. – BinaryMisfit Jan 17 '10 at 12:52

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