I recently received this motherboard: Intel D845GVAD2. It has STAC9750 audio codec onboard, but it's not working. The line out is dead silent, ADC works, computer behaves normally otherwise. If I play something back, there is a little crosstalk of this material onto the line-in recording. So, it doesn't look like a software problem to me, or does it?
The front_audio jumper block has the documented pins shorted except "Mic Bias <-> +5V". I didn't risk putting a jumper over those contacts, because if the markings are right, only the mic jack would be affected anyway.
What gives?
WonderSlug
Jun 29 2008, 11:23
According to this Intel support link:
http://support.intel.com/support/motherboa...b/cs-015831.htmQUOTE
Front Panel Audio Connector/Jumper Block
This connector has two functions:
With jumpers installed, the audio line out signals are routed to the back panel audio line out connector.
With jumpers removed, the connector provides audio line out and mic in signals for front panel audio connectors.
The table below describes the two configurations of this connector/jumper block.
CAUTION
Do not place jumpers on this block in any configuration other than the one described in the table below. Other jumper configurations are not supported and could damage the Desktop Board.
Jumper Setting Configuration
1 and 2
3 and 4
5 and 6
9 and 10 Audio line out signals are routed to the back panel audio line out connector.
No jumpers installed Audio line out and mic in signals are available for front panel audio connectors.
So, if your motherboard is configured this way, you'd need to use the back panel audio connectors.
I intend to use only the jacks on the rear ATX panel.
Mobo arrived with jumpers over
1 and 2
5 and 6
9 and 10.
3 and 4 was not connected and although "other jumper configurations are not supported", I am reluctant to attempt shorting these pins. 5V to ground is no joke.