Acer aspire 8920 hdmi audio & onkyo TX-SR608

Hello,

I own a Acer aspire 8920 running windows vista

Connected to onkyo TX-SR608 with a hdmi cable and the audio is intermittent. It works for the first few minutes upon startup and then the onkyo TX-SR608 loses the hdmi signal.

I have also connected a PS3 to the onkyo but this works fine.

I believe all the acers drivers are uptodate - I downloaded and installed the latest drivers for the sound card and acer audio management software from the acer website last night.

Any feedback would be greatly appreciated - thanks very much!