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Problems sending laptop video/sound to HDTV via HDMI-HDMI connector

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Old 02-13-2012, 06:30 PM   #1  
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Default Problems sending laptop video/sound to HDTV via HDMI-HDMI connector

Hi:

I am trying to send the audio and video from a laptop to an HDTV.

I am trying to play a DVD on the laptop and display it on the HDTV.

I have 2 similar scenarios with similar problems.



Scenario 1:

Laptop 1: HP dv6500z using Windows Vista 32-bit Home Premium

HDTV: Sony Bravia KDL-40V4100 (Display resolution: 1920 x 1080)

I have an HDMI-HDMI cable running from the output HDMI jack on the laptop

to the input HDMI jack on the HDTV.

The video displays fine, but I get no audio through the HDTV speakers.

The laptop's Sound Control Panel is set by default to the laptop's internal speakers.

With the HDTV attached to the laptop, I see an SPDIF interface listed in the Sound

Control Panel. If I set the SPDIF Interface as the default, I still do not get audio

through the HDTV's speakers, even after starting things over, using the new settings.

Somehow, I was able to play a YouTube videeo just fine, with controllable audio

on the HDTV, but couldn't do it at a later time, using a differnt YouTube video.

Why isn't there an HDMI Device/Interface listed in the Sound Control Panel ?

Am I missing a software update ?





Scenario 2:

Laptop 2: HP G60-533CL using Windows 7 , 64-bit Home Premium

HDTV: Sony Bravia KDL-40V4100 (Display resolution: 1920 x 1080)

I have an HDMI-HDMI cable running from the output HDMI jack on the laptop

to the input HDMI jack on the HDTV.

The video displays the message,

"Unsupported signal: Please check device output",

and, I don't get any audio through the HDTV speakers.

The laptop's Sound Control Panel is set by default to the laptop's internal speakers.

With the HDTV attached to the laptop, I see an HDMI device listed in the Sound

Control Panel. If I set the HDMI device as the default, I still do not get audio or video

through the HDTV, other than the "error message" listed above, even after starting

things over, using the new settings.





I looked in the HDTV's Owner's Manual, and it talks about having to change its

Picture Mode to Custom, its Wide Mode to Full, and its Display Area to Full Pixel.

I have not yet had time to try this.



I am also having the same audio problem when sending the HDMI signal from the

HP dv6500z laptop to a Sony Bravia KDL-32S2010 HDTV. (Display resolution: 1366 x 768).

I get the video signal just fine, but no audio signal from the HDTV



Any ideas on how I can get the DVD audio/video signals to the HDTV for these scenarios?

I have read many similar/related "problems" via Google, but in have not been able to make things work. Here's one:

en.kioskea.net/faq/9422-hooking-up-laptopto-hd-tv-with-hdmi-cable


Thanks for your feedback, in advance.


DaleB
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Old 02-13-2012, 06:41 PM   #2  
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The unsupported video is just that - you are trying to send a resolution to the TV that the TV doesn't support. You'll need to stick with a standard ATSC resolution (1080/720/etc), or you'll need to check the TV manual for what PC resolutions are indeed supported by the TV.

If you don't see HDMI as an audio output in Windows, then either the laptop doesn't send audio over HDMI, or you need to visit the manufacturer's support website and check to see if there are drivers for HDMI audio. Checking the laptop manual(s) will also be helpful.
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Old 02-13-2012, 06:51 PM   #3  
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Why wouldn't audio be sent over HDMI ?
Isn't audio part of an HDMI signal (viz, a signal that can be sent over HDMI) ?

Thanks...
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Old 02-13-2012, 09:56 PM   #4  
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Quote:
Originally Posted by dale.brandt View Post
Why wouldn't audio be sent over HDMI ?
Isn't audio part of an HDMI signal (viz, a signal that can be sent over HDMI) ?

Thanks...
It is but... because it is possible that the monitor or HDTV that is being connected to uses DVI with a HDMI to DVI cable. In that case (usually the default for PCs) the HDMI audio is disabled. Try going into the Control Panel and setting up the sound playback to a HDMI Digital Audio as default.
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Old 02-14-2012, 09:36 AM   #5  
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I didn't see any info on what video card he has on the laptops. It's a different solution for ATI or nVidia or even Intel and if it's onboard or discrete.
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Old 02-14-2012, 02:21 PM   #6  
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Hi:
The HP dv6500z latop has an NVIDIA Control Panel (access it by right-clicking in a blank artea of your Desktop). I see parameters than can be set relative to video (like when you are in a Monitors/Video Control Panel: e.g., setting which screen is primary, and which screen is secondary), but don't see anything relative to audio (or audio being sent via HDMI from a laptop).
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Old 02-14-2012, 02:32 PM   #7  
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If it's nVidia, then it has to be SPDIF, but your audio card/onboard has to be connected by SPDIF to the video card for HDMI output. I really don't have that kind of expertise with laptop setups and not sure if they can integrate onboard video and audio but that connection is the source of your problem.
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Old 02-16-2012, 08:19 AM   #8  
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Some of the early laptops with a HDMI connector did not allow for audio via the HDMI port. It appears yours is one of those. The 8400GT video does not handle audio. In the desktop PC card versions a jumper from the spdif connection on the sound card or motherboard to the video card is required for audio via the HDMI port.
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Old 03-02-2012, 07:51 PM   #9  
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In Win 7 you have to go to the bottom left of the screen and click on the speaker icon. Select the bottom entry on the list. It gives you a list of possible sound sources select HDMI. Multiple selections possible.
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Old 03-02-2012, 09:37 PM   #10  
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Quote:
Originally Posted by ceh4702 View Post
In Win 7 you have to go to the bottom left of the screen and click on the speaker icon. Select the bottom entry on the list. It gives you a list of possible sound sources select HDMI. Multiple selections possible.
Bottom right, right click, select playback devices.
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