Windows 7 Forums

Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: Windows 7 cannot auto-detect audio I/O

18 Aug 2010   #1
mfaklis

Windows 7
 
 
Windows 7 cannot auto-detect audio I/O

My HP e9280t has a built-in Realtek sound chip with multiple i/o ports. The digital port is a toslink. The analog ports are mini-ports.
The problem is that Windows 7 Ultimate x64 won't auto-select which audio port to use. Realtek tech support told me that Windows specifications allow their driver to output to audio xor digital audio ports. The hardware can do it, but Microsoft won't allow it. Microsoft sounds, TV stations with analog audio tracks, and optical disks with analog audio tracks will play only through the audio output. TV stations with digital audio tracks and DVDs with digital audio tracks can output to the digital toslink port to my Dolby 5.1 receiver/amplifier with up to 5 discrete audio channels. The big problem is that you must manually configure either analog or digiral audio outpout in Windows 7 to match the audio or digital sound track of the source media each time you switch from one to another.

I use media center with a hauppauge 2550 dual tuner. If I watch channel 7 (local ABC analog feed) and switch to channel 7.1 (local ABC digital feed), I must manually reconfigure the Windows sound system to output to the appropriate audio output. At the same time I lose all other windows sounds which will only work through the analog outputs. If I tune back to channel 7, I must again reconfigure windows sound system back to analog. True, I could leave Windows configured for analog audio and not hear the discrete 5.1 audio channels.

The rub is that it's no longer a stereo world. 5.1 and 7.1 is the norm. My old receiver/amplifier doesn't have 7.1, but it can detect whether it is to output mono, stereo, matrixed dolby surround, or digital dolby 5.1. Why can't Windows 7? Why would Microsoft dictate to Realtek that it cannot autodetect and switch outputs, or just output to all outputs so that the external receiver/amplifier select the desired sound source?

I expect a new Microsoft Media Center machine with Windows 7 Ultimate should be able to auto-select audio outputs.

Recommendations are desired.


My System SpecsSystem Spec
.

18 Aug 2010   #2
Aphelion

Windows 7 Home Premium
 
 

Quote   Quote: Originally Posted by mfaklis View Post
My HP e9280t has a built-in Realtek sound chip with multiple i/o ports. The digital port is a toslink. The analog ports are mini-ports.
The problem is that Windows 7 Ultimate x64 won't auto-select which audio port to use. Realtek tech support told me that Windows specifications allow their driver to output to audio xor digital audio ports. The hardware can do it, but Microsoft won't allow it. Microsoft sounds, TV stations with analog audio tracks, and optical disks with analog audio tracks will play only through the audio output. TV stations with digital audio tracks and DVDs with digital audio tracks can output to the digital toslink port to my Dolby 5.1 receiver/amplifier with up to 5 discrete audio channels. The big problem is that you must manually configure either analog or digiral audio outpout in Windows 7 to match the audio or digital sound track of the source media each time you switch from one to another.
What's an optical disk with an analog audio track?

A CD? A CD does not have analog tracks, it has digital tracks except that they are encoded in Stereo.

For it to come out the digital port has nothing to do with anything else except for the fact it's "encoded" at 5.1. The other sources you mentioned are encoded Stereo so they are coming out of the analog output.

Using the Realtek control panel under the Speaker Configuration.... have you tried selecting "Speaker Fill".

This enables Stereo sound to output on a 5.1 system.

Also, make sure you're using a recent Realtek driver.

Ap
My System SpecsSystem Spec
18 Aug 2010   #3
mfaklis

Windows 7
 
 

Good clarification of terminology. Thank you. I have the latest driver HP posted on their site for this machine. Yes, speaker fill is set on, however ...
Stereo CD's, DVD's, MP3's, TV stations, web streams, insist on coming out of the analog stereo mini-plug only. 5.1 encoded DVD's and TV stations insist on coming out of the toslink only. It would appear that speaker fill doesn't send stereo sources to 5.1 speakers on my machine.

I must reconfigure WIn7 audio with the Realtek HD Audio Manager applet and restart media center and/or media player whenver I switch from/to stereo and 5.1 sources.

My receiver's speaker test hits all 6 speakers, but the Realtek applet for 5.1 speaker configuration only hits the front left and front right speakers. The other four remain quiet. When playing a 5.1 source with Realtek's applet using the digital output as the default actually uses all 6 speakers.
My System SpecsSystem Spec
.


18 Aug 2010   #4
Aphelion

Windows 7 Home Premium
 
 

Quote   Quote: Originally Posted by mfaklis View Post
Good clarification of terminology. Thank you. I have the latest driver HP posted on their site for this machine. Yes, speaker fill is set on, however ...
Stereo CD's, DVD's, MP3's, TV stations, web streams, insist on coming out of the analog stereo mini-plug only. 5.1 encoded DVD's and TV stations insist on coming out of the toslink only. It would appear that speaker fill doesn't send stereo sources to 5.1 speakers on my machine.
Ok, you might try the latest driver from Realtek, there's been several improvements I'm sure.

Realtek

Most users are using the drivers directly from the manufacturer. It might take a double install as the first one usually uninstalls the previous driver.

Ap
My System SpecsSystem Spec
Reply

 Windows 7 cannot auto-detect audio I/O




Thread Tools





Similar help and support threads
Thread Forum
Realtek Audio HD Manager does not auto-detect speakers
Hi all, I recently updated my AMD drivers as Civ: Beyond Earth asked me to. Since then, the Audio Manager has not been able to detect the speakers automatically. I regularly plug in and unplug my headset and previously the system would detect it being removed and automatically switch the...
Sound & Audio
Acer Aspire 5515 Windows won't detect audio device.
I installed Windows 7 on my Acer Aspire 5515 Specs: 3gb ddr2 Amd athlon 2650e 1.60ghz Ati x1200 I installed the realtek audio drivers for windows vista from the Acer website, ran them in compatibility mode and still Windows won't detect it. There are also no audio devices shown in the...
Sound & Audio
Auto-detect monitors
Hi, I bought Monitor LED Philips 222EL2SB 21.5 inch 5 ms wide black, and i've connected it to the pc via DVI, 1 problem is that it will not detect my monitor via DVI. Luckily i have an addaptor from DVI to hdmi and this seems to work. The second problem is that whenever i plug anything in the...
Graphic Cards
No auto-detect output for Realteck on Windows 7 device
I really can't say this is solely a Windows 7 (Home Premium 32) issue, but I had to start somewhere. I have two different computers. On the one running Vista 64, it automatically swaps the output to speakers, HDIM connection, headphones, or either of my bluetooth headphones with no problem. On the...
Sound & Audio
Auto-Detect issue
My computer has developed a lag during startup. When the boot process gets to Auto-detecting USB Mass Storage Devices there is a noticeable pause whereas there was none before. It is not consistent, sometimes it happens and then sometimes it doesn't. Is this a problem and what can I do about it? ...
Hardware & Devices
Windows doesn't detect any audio devices: no sound
Hello, my name is Conan. I have installed Windows 7(Ultimate, 64-bits) in 2009, my previous os was Windows XP(32-bit). Although I am really happy with W7 there's something which is a big turn-off. The sound, that is, it hasn't worked on W7 ever since I installed it. It's not the devices that...
Sound & Audio

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 12:08.

Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App