Go Back   Hardware Canucks > PC BUILDERS & TWEAKERS CORNER > Troubleshooting

    
Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old April 4, 2014, 09:09 AM
Rookie
 
Join Date: Jul 2012
Posts: 13
Default Disable video on HDMI?

Hey all,

So I recently upgraded to a 2560x1600 monitor and now I am running into a strange problem. Originally, I was using my TV as my all purpose display and routing everything through my receiver. However, now that I am running a displayport cable for video, I only want to use the HDMI from the graphics card for audio signals only, since they are the highest bit rate.
The computer thinks I am trying to run two different displays, despite only being connected to one monitor, albeit through different inputs. I am pretty certain this causes my GPU to work a little harder.
If anyone knows a way to disable video on HDMI, I'd appreciate it. Otherwise, the only solution would be to run an optical/coaxial cable from my mobo to my receiver, correct?
The only possible solution I've found so far is Windows key + P, which toggles projector settings.

Thanks a lot for the help!
Reply With Quote
  #2 (permalink)  
Old April 4, 2014, 10:55 AM
SugarJ's Avatar
Moderator
F@H
 
Join Date: Jan 2008
Location: Langley, BC
Posts: 6,072

My System Specs

Default

Your best bet is using an optical cable from your motherboard to your receiver. The receiver's DAC is probably better than the one on your GPU anyways. They're fairly inexpensive <$10.
Reply With Quote
  #3 (permalink)  
Old April 4, 2014, 11:00 AM
enaberif's Avatar
Hall Of Fame
 
Join Date: Dec 2006
Location: Calgahree, AB
Posts: 10,582
Default

Quote:
Originally Posted by SugarJ View Post
Your best bet is using an optical cable from your motherboard to your receiver. The receiver's DAC is probably better than the one on your GPU anyways. They're fairly inexpensive <$10.
o.O GPUs use a pass through method to put audio out to the receiver or the audio device it goes through. This is why HDMI through a GPU is so useful for HTPC.
Reply With Quote
  #4 (permalink)  
Old April 4, 2014, 11:12 AM
SugarJ's Avatar
Moderator
F@H
 
Join Date: Jan 2008
Location: Langley, BC
Posts: 6,072

My System Specs

Default

I honestly don't think they just pass through from an external source. There is a decoder on board graphics cards today to embed sound over HDMI, just not a great one. A few years back when HDMI was just becoming available on graphics cards you had to physically run a wire from the card to your motherboard or sound card, then AMD starting embedding them in their cards and Nvidia followed suit.

It's all moot if you're passing digital content as the DAC on the receiver will control the quality of your sound, whether it comes from your GPU or elsewhere.
Reply With Quote
  #5 (permalink)  
Old April 4, 2014, 11:24 AM
Top Prospect
 
Join Date: Jan 2013
Location: Brampton, Ontario
Posts: 56

My System Specs

Default

The only issue is that i.e. Optical can only carry 2.0 LPCM uncompressed or compressed Surround formats, unlike HDMI which I believe can carry uncompressed LPCM surround. This can be problematic for PC games and the like that don't output in DTS or DD.

That said, to be honest I don't have a good solution for. What I've done in my own situation is to use a half-way decent sound card and output over three 3.5mm-RCA cables to the 6CH Analog input on my amp.
__________________
Personal Rig: See System Specs
HTPC: Pentium G3420, MSI H81i, 4GB G-Skill DDR3 1333, PNY Quadro 4000, 400GB Recertified Seagate, 1TB WD Caviar Green, 750GB WD Caviar Blue 2.5", Cooler Master Elite 120 Advanced, Windows 7 x64, 32" Seiki LCD TV, Panasonic SA-HE75 5.1 Reciever
9x Gamer: eMachines eOne - 433 Mhz Celeron, 64 MB RAM, 8MB ATI Rage XL, 6GB HDD, Windows 98se
9x Gamer #2: 500 Mhz Pentium III, 512MB Ram, nVidia Geforce 5600, 20GB HDD, Windows ME
Reply With Quote
  #6 (permalink)  
Old April 4, 2014, 08:23 PM
Rookie
 
Join Date: Jul 2012
Posts: 13
Default Update

Win Key + P does disable the HDMI from sending a video signal, but it also prevents the audio as well.
Will keep looking into this issue as I'm fairly certain the best sound will only come from HDMI. If anyone has further suggestions, they would be much appreciated.
Thanks for all the input so far!

Last edited by Maverix; April 4, 2014 at 08:34 PM. Reason: Incorrect information
Reply With Quote
Reply


Tags
audio , gaming , hdmi , video

Thread Tools
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
Can I output 2x VGA from a video card that has DVI, HDMI, DP? Linus LinusTechTips Q&A 0 October 3, 2011 06:03 PM
[WTB] Nvidia HDMI Video card undeclared Buy/Sell & Trade 1 December 24, 2010 12:12 PM
[WTB] 2 or 4 Gigs of DDR2 ram & video card HDMI yamawho Buy/Sell & Trade 0 July 17, 2010 07:53 AM
HDMI video card Sui HTPC Systems & Software 13 April 4, 2010 10:51 AM
No sound from video card hdmi tcos HTPC Systems & Software 15 April 1, 2009 07:17 PM