Solved No sound through HDMI

[FrankyB]

I have a Gateway MD78oU laptop and it came with Vista but I upgraded to Windows 7 Ultimate 64. After I upgraded I noticed that I no longer have the option of selecting HDMI as a device playback option.

Im Trying to connect to my TV and have the sound come through the TV but it will on playback from the speakers. When I select SPDIF I get no sound at all.

I seen where someone had the same problem here is a link provided
http://www.sevenforums.com/sound-audio/33416-no-audio-coming-out-hdmi.html

Please help me, as I dont want to have to go back to factory just so I can use this function.

Thanks

 

[fireberd]

You have to have the HDMI in the Sound Panel's Playback section so it can be set as the default audio playback device. The first step is to reinstall the Video drivers. Windows 7 uses the same driver as Vista, if Gateway and or the Video manufacturer does not have a Windows 7 driver, use the Vista driver.

 

[FrankyB]

Video drivers, I thought I would need the audio drivers?

I am also a noob when it comes to these things. I tried to download one and it didnt have any effect at all.

Im not too sure I am getting the right drivers.

I went to the Gateway driver download section and it only has 1 option for audio drivers and no video drivers option at all.

 

[fireberd]

Here is the Gateway downloads for this model. It lists the Connexent Audio driver and several different "VGA" video drivers. Gateway Support - Downloads & Support Documents - Notebook / MD Series / MD78

According to the specs this either has an Intel or ATI video (depends on whether it has the basic video which would be the Intel, or an upgraded video with the ATI).

Download the free Speccy program and it will profile your hardware and tell you what video you have.
Speccy - System Information - Free Download

 

[stormy13]

According to the specs this either has an Intel or ATI video (depends on whether it has the basic video which would be the Intel, or an upgraded video with the ATI).

Both of which have the necessary driver for HDMI audio included in the video/VGA driver. The Intel driver has an install Readme in the zip file on how to install the HDMI driver, and the ATI should show it when you install (when installing choose Custom and it will show everything that will be installed, and one of them should be the HDMI audio driver).

 

[FrankyB]

You 2 are helping a great deal and I apologize for being such a noob but I downloaded the Speccy program but I dont know what Im looking for.

Am I looking under graphics or audio, etc?

Here is what graphics says

Mobile Intel(R) 4 Series Express Chipset Family
Memory 1852 MB
Memory type 2
Driver version 8.15.10.1892
Mobile Intel(R) 4 Series Express Chipset Family
Memory type 2
Driver version 8.15.10.1892

This is what audio says

Sound Cards
Conexant High Definition SmartAudio 221
Intel(R) High Definition Audio HDMI
Playback Devices
SPDIF Interface (Conexant High Definition SmartAudio 221)
Speakers (Conexant High Definition SmartAudio 221) (default)



EDIT:

I did it!!

I fixed it by going into the control panel, monitors and Intel chipset and uninstalled, while it was uninstalling I went into playback and it gave me the HDMI option. Once it was done I didnt restart to finish the un-instillation, I let it auto re-install and now its fixed.

Thank You both for helping me so much and Thanks to the other thread I mentioned in my first post or I would have never figured out it was a driver issue. For over a year I couldnt figure out what happened and I just gave up and then I stumbled onto that thread while Googling.

 

[fireberd]

Thanks for the feed back and that it's finally working.

 

[FrankyB]

I + repped both of you.

 

[breezetdk]

Solved, but harder than I thought.

There are several parts that I had to do to get this completely fixed on my Gateway DX4820 that would not play audio through the hdmi port to my HDTV. This may work different for you, but these settings worked after a lot of trial and error. We will be installing the original video drivers, but first.....

First, change Windows automatic updates. I have chosen to let me decide when to download and install them and I receive recommended updates the same way I see important updates.

Second, change device installation settings. Check the no box and choose never install driver software from windows update. They will still show up in windows update, but now you will see them and can decide whether or not to download them. This is very important, because every time you install the original drivers, windows will update with the new drivers and stops it from working as soon as you get it working. Leave the icon choice checked if you want it?

Third, I am not sure yet if this is required, but it, in the beginning, it was for me. Disable realtek hdmi audio in device manager. I have re-enabled afterwards and they coexist. I thought that the realtek driver was removing the intel one, but now I think that windows update was actually removing the intel hdmi driver with the new intel update from windows.

Fourth, download the original video drivers from Gateway and make sure you get the correct ones (intel, ati, 32, 64). Install. Restart one or two times. I had to re-install several times because of the automatic updating issue and a couple of the times aero was turned off. It seemed to do best when I did not remove the original drivers first.

Fifth, select and set as default the Intel HDMI device in the audio playback settings.

Thank you for these posts. I would probably not have figured it out without the information I found here.

Good luck!