Re: Onboard Sound problem for INTEL 945GNT



Ghegde wrote:
onboard sound problem for intel 945 board

it is enabled in bios

new drivers installed, and bios is updated


D945GNT - Sigmatel HDaudio (Sigmatel was bought by IDT recently)

http://download.intel.com/design/motherbd/nt/D1406901US.pdf

Is anything connected to the Front Panel Audio connector ?
(Table 19 on page 60. Item F in the picture on page 58.)

In the case of HDaudio, it shouldn't make a difference, if the
HDaudio header is cabled up. Most computer cases have an AC'97
wiring harness, which is not perfect for that 2x5 header and
its HDaudio pinout. The sense return lines get connected to
Port F outputs when that happens. What that could screw up,
is jack detection, but it shouldn't absolutely prevent any
output from showing up on Lineout. What you really want
in a case like this, is to connect only five wires from the
AC'97 computer case audio wiring, to that motherboard header.

In any case, if it was my computer, I would carefully note how
the cable was installed on Item F, and *disconnect* the audio
cable from the motherboard Item F.

For HDaudio, you need the Microsoft UAA driver. Some audio
installers will complain and tell you what to go looking for.
Some installers have a copy of UAA included in the installer.
Usually, you'd get some inkling that there were problems,
from watching what happens when you go to install.

Next stop, is the Intel driver page for D945GNT.
http://downloadcenter.intel.com/filter_results.aspx?strTypes=all&ProductID=2068&OSFullName=Windows*+XP+Professional&lang=eng&strOSs=44&submit=Go%21

Hmmm. They have different solutions, as a function of your
computer case front panel audio wiring type :-)

http://downloadcenter.intel.com/Detail_Desc.aspx?agr=N&Inst=Yes&ProductID=2068&DwnldID=8658&strOSs=44&OSFullName=Windows*%20XP%20Professional&lang=eng

Have a look at the options and select one of the two drivers.
99.999% of all people will be using "Option 1", because
I have yet to hear of a computer case with HDaudio wiring.
They all have some form of AC'97 to date. I'm still
waiting for someone to describe the new pinout in a
USENET posting.

******* Release notes for Intel Option 1 and Option 2 *******
v174 5258 XP - SigmaTel HD audio driver

Multistream capable build, by default the Multi-streaming is disabled.
To enable MS in IAS, check the Multi Zone Enabled box, in StacGUI
check the Enable Redirected Headphone box.

In Single stream mode, the audio system will operate in a traditional way.

When MS is enabled, there will be two “devices.” The front panel will act
as a device, and the rear panel will act as a device. Audio will be copied
to the front when only a rear application is being used, but will only play
out the rear when an additional application is playing out the front. For
example, Skype (when configured for front) will play out the front only (and
record via front), and Media Player will play out the rear while Skype is active.

Builds with AC'97 in the label/title are for use with old or legacy AC'97 FP headers.
Builds wtih HD in the label/title are for use wtih HD front panel headers.
*****************************************************

And in your next posting, describe the onboard sound problem.
Sometimes, if you do an audio test, the Lineout doesn't work,
but some of the Surround channels do. So you could try plugging
in more speakers, and test what is working.

For additional fun, you can try Start:Run and type dxdiag in
the box. That will run the DirectX Diagnostic program. It has
a sound test panel. Your Intel audio package may have a
sound test function as well. My SoundMax software has a test
audio file that comes out of the different speakers, as a
means of showing all the speakers work.

Since I haven't found anything resembling a Sigmatel manual,
I don't really know what functions are available in their
Mixer/SysTray application. I have a Dell driver here, and the
nice thing about the Dell Sigmatel driver R158235, is that
the contents of the installer are unzipped onto the C drive,
so you can look at them. For example sthda.sys would be a
key driver file, while stsystra.exe would have something to
do with the mixer or control panel. Those files are in
the WDM folder. In the Dell HDAQFE folder from that driver,
there is kb835221.exe and qfe.exe, which have something to
do with installing UAA from Microsoft. Since the UAA files
are so small, they are probably only for English localization.

Paul
.