I have a HTPC with an AMD 6570 graphics card - I used to be running the older 12.8 drivers with no problems. I decided to do a clean reinstall of Windows 7 (32-bit), and in this instance installed the latest 13.4 drivers.
I use a HDMI cable output from the 6570 to a Pioneer AVR, which then outputs to my LCD TV (and a 5.1 sound system).
The computer always stays on, no power savings enabled - hard drives are kept powered up etc (it's an older Core2Quad 8300, 4Gb of RAM, 4 HDTV tuners etc that acts as a media centre - i.e. I have xbox 360 extenders in the bedroom that connect to it).
With the 13.4 drivers, if I turn off the TV and AVR (leaving the computer on), when I turn them back on again later... I find I've lost sound. It says the HDMI audio is not connected.
Obviously it IS connected as the damn HDMI video is working! But there's no way to get it to reactivate the sound without rebooting.
I started again from scratch - reinstalled Windows 7 but this time put back on the older 12.8 drivers. That setup works fine, audio doesn't lose connection.
So somewhere after the 12.8 version, HDMI audio output (detection of it being connected) has become broken.
EDIT: Template stuff:
AMD Catalyst Driver Version, and Driver History
Clean install of 13.4 on a freshly formatted SSD (clean Win 7 installation)
Windows 7 (32-bit)
As previously described
Motherboard or System Make & Model
Asus P5B Deluxe/Wi-Fi (Socket 775)
Applications and Games
Windows Media Centre
Intel Core2Quad Q8300 2.5Ghz quad core
System Memory Type & Amount
4Gb (2x2GB) DDR2
Sony 46" LCD TV
In the machine - a 64Gb Crucial M4 SSD, two 2Tb HD's, one 3Tb HD. Two Avermedia twinstar dual HDTV tuners (i.e. two PCI-E cards that are dual tuners).
07:35 AM by