I have Intel DG45ID board (rev 11) and am using it on my old zebronics 450W cabinet (http://www.zebronics.net/Zeb_Korea.asp), which has only AC-97 front panel audio support.
Earlier i was under impression that this board supports only HD Audio for front panel audio. I got mixed response from intel technical support team when i asked them whether this board supports HD Audio or AC -97 for front panel audio. But i when i tested it with Ms Widows Xp Prof (32 bit) OS the AC-97 front panel audio worked fine without any issue, so i came to know that this board can support AC-97 front panel audio too. While it is known fact that jack detection does not work with AC-97 front panel audio but it is quite workable.
But when i installed Ms Windows 7 64 bit Ultimate N edition os my front panel audio stopped working.
With the assistance of intel technical support team i came to know about the new feature introduced in windows7.
The fact that the ac-97 front panel audio which worked in windows xp and not in windows 7 does not imply there is a problem with hardware or driver, its a windows 7 feature.
Windows 7 does not detect my headpone connected to ac-97 front panel audio module unless i attach a hearphone / speaker to my rear audio panel.
A dead speaker also does the job and only after attaching it windows 7 emits sound in my front panel headphone.
The answer i received from intel technical staff is that as ac-97 does not support jack detection so windows 7 does not detects anything connected to front panel audio. When we connect a speaker to rear panel windows 7 detects it using jack detection and then only determines that a sound device is connected to the system, then it also starts emitting sound on front panel.
If i don't select AC97 Front panel support in IDT audio control software it never shows my front panel headphones as connected.
If i select this option it always show my front panel headphones as connected even after i remove my front panel headphones.
Whether it shows my front panel as connected or disconnected i received sound in my front panel headphone if a sound device is connected to rear panel either working or not working. This seems to be a new features of windows 7.
I am using latest updated windows 7 64 bit ultimate n edition os with latest IDT audio control software 1.0.6224.7
Does any one faced a similar issue?
May be this feature is introduced from vista os.
After a brief search i came to know that since vista os the AC-97 front panel audio is only supported in a compatible and not fully supported as supported by windows xp 32 bit prof os.
Anyway this board DG45ID sound quality is awesome, a HD audio front panel is recommended along with a 8 channel rear sound speakers.
Waiting for your replies...