Yup.. Same exact problem here.
There's a problem with the HDMI resync when switching back to the computer. I have a 1018 receiver, but it seems to be something that people are seeing with a wide variety of receivers.
I have a better solution (still not great, but better) for fixing this (then logging in/out). All you have to do is change the resolution on the system, it will force the HDMI to resync and restore your sound. I would test it first (from control panel) to make sure it works for you, and if it does, here's how to make it really easy.
Write a batch file that looks like this:
DC -width=1920 -height=1080
DC -width=1776 -height=1000 -apply -force
On the first line, just put any resolution that's supported on your system. On the 2nd line, put the resolution that you want to run. What this will do is quickly switch the system (so fast you won't even see it) to 1920X1080, and then switch it back to 1776X1000 (my custom resolution). The screen will go blank for a second and then come right back WITH sound!
Hope this helps others until the drivers allow us to force sound resync (or disable sound detection and allow us to force sound).
Originally Posted by karrsic
Overall, w/ latest Realtek and ATI drivers (as well as mobo bios updates), my system is pretty stable. I do have a recurring problem I wonder if others' see.
My setup is HTPC -> receiver ->HDTV and
HDCable STB -> receiver -> HDTV both via HDMI.
If I am using the HTPC 5:1 works fine. If I switch over to the cable HD signal 5:1 is fine. If I then switch pack to the HTPC, my sound is gone and even the tab on Realtek HD Audio manager disappears. If I log out/in sound and Realtek panel are restored.
Has to do with the loss of the HDMI signal. I can, for instance, continue to listen to music via the PC while watching the TV without a problem.
Anyone else see this?