HDMI to tv problem

Gingervitis

Hey, I've been having a wee bit of trouble with my new pc and my 32" TV.

I've been using my laptop for the past year or so (Samsung Sens R530, Nvidia 310M) and using a HDMI connection to my LG XCanvas 32" no problem. Just plug it in, windows key + P, connect to projector, bam.

However, I've gotten a new gaming rig: Core i7, 8G, blah blah. The motherboard is an Asus H67 with an HDMI output, and I've also got a Geforce 560 TI, similarly with an HDMI output. I couldn't connect the pc to the tv directly through a VGA cable (worryingly), only through a VGA to DVI adapter. I've downloaded the drivers and utilities for the chipset, installed the Geforce Drivers, but I can't detect the TV? The cable still works perfectly when connected to the Laptop, and I've tried both HDMI outputs, but nothing works. Any idea what I'm doing wrong? Would an HDMI to DVI adapter work?

As an aside, using the VGA cable and the accompanying sound cable causes a buzzing that intensifies whenever I'm playing a game. Is that the cable's fault or is there someway I can rectify that?

Much obliged for any help.

armitage_skanks

Some H67 mobos disable the integrated graphics as soon as you plug in a discrete card.

Don't know if that helps or is relevant for your mobo but in any case for the purpose of troubleshooting I would forget about the integrated GPU, concentrate on getting the Nvidia HDMI output working. Issue may be HDCP related, some TVs arent HDCP compliant.

Gingervitis

In the Nvidia Control Panel settings, this is what I see:

Don't know anything about HDCP, but as the cable works with no problems on my 2 year old laptop with an inferior graphics card, figured there should be another solution. I'll look for a DVI-HDMI adapter.

old_aussie

Isn't HDMI digital, your first png shows analogue detection.

old_aussie

armitage_skanks wrote: »

Some H67 mobos disable the integrated graphics as soon as you plug in a discrete card.

Don't know if that helps or is relevant for your mobo but in any case for the purpose of troubleshooting I would forget about the integrated GPU, concentrate on getting the Nvidia HDMI output working. Issue may be HDCP related, some TVs arent HDCP compliant.

That's for a MoBo that has a PCI-E x 16 slot. Like in a tower not laptop.

the_syco

Gingervitis wrote: »

As an aside, using the VGA cable and the accompanying sound cable causes a buzzing that intensifies whenever I'm playing a game. Is that the cable's fault or is there someway I can rectify that?

See if turning the light for the room, or near the cable, on and off (or off and on)... had this problem before with a scart cable that went from my TV-out to a TV. It shouldn't, but it may...

Gingervitis

old_aussie wrote: »

Isn't HDMI digital, your first png shows analogue detection.

That is the screen when both the dvi-vga cable and the hdmi cable are plugged in to the tv. When I try to connect to a projector, the screen goes blank for a few seconds, then an error message comes up, saying "projector not found".

armitage_skanks

old_aussie wrote: »

That's for a MoBo that has a PCI-E x 16 slot. Like in a tower not laptop.

He is talking about a desktop.

Gingervitis

the_syco wrote: »

See if turning the light for the room, or near the cable, on and off (or off and on)... had this problem before with a scart cable that went from my TV-out to a TV. It shouldn't, but it may...

Worth a shot, but it didn't work. No discernible difference. Some games like LA Noire seem to create a louder buzz. It varies from program to program. The buzz still exists when the pc is turned off. Might just be a crappy connection at the back of the TV or a bad cable.

Forest Demon

Sounds like a ground loop

http://www.audioholics.com/tweaks/connecting-your-system/ground-loops-eliminating-system-hum-and-buzz

If you run the laptop from the battery does the sound go away?

If not then try and unplug everything except the laptop and TV. Sometimes speakers and surround systems are cause the issue. A lot of the time its speakers.

I had the the same issue with an Apple laptop and some speakers. See the section called Breaking the loop in the following link:

http://www.soundonsound.com/sos/nov04/articles/computerproblems.htm

Gingervitis

Forest Demon wrote: »

Sounds like a ground loop

http://www.audioholics.com/tweaks/connecting-your-system/ground-loops-eliminating-system-hum-and-buzz

If you run the laptop from the battery does the sound go away?

If not then try and unplug everything except the laptop and TV. Sometimes speakers and surround systems are cause the issue. A lot of the time its speakers.

I had the the same issue with an Apple laptop and some speakers. See the section called Breaking the loop in the following link:

http://www.soundonsound.com/sos/nov04/articles/computerproblems.htm

It's not the laptop, it's the desktop. Anyway, I'm trying to avoid this issue by getting the HDMI working.

armitage_skanks

Yes you need to stop using the integrated graphics outputs. It will just confuse things. Don't even put a cable in them.

So when you are just using HDMI from the Nvidia GPU, do you get anything at all at bootup? Even a splash screen? And does your TV do anything (usually you can tell when they detect a signal because they bring up an OSD box telling you the resolution etc)

Gingervitis

Ok, so I found the solution. I bought an HDMI to DVI cable and that solved the problem. When I first bought the computer, I couldn't get any video cable to work by plugging it into the motherboard, so clearly, I had to go through the GPU (it worked when I plugged in a VGA to DVI adapter). I just don't understand why the HDMI to HDMI cable didn't work, when the same cable worked on the HDMI input in my laptop...

At least that's solved! Thanks for the help.

yoyo

Gingervitis wrote: »

Ok, so I found the solution. I bought an HDMI to DVI cable and that solved the problem. When I first bought the computer, I couldn't get any video cable to work by plugging it into the motherboard, so clearly, I had to go through the GPU (it worked when I plugged in a VGA to DVI adapter). I just don't understand why the HDMI to HDMI cable didn't work, when the same cable worked on the HDMI input in my laptop...

At least that's solved! Thanks for the help.

If you have a dedicated video card the bios will automatically disable the onboard video (you can't have more than one video card working at the same time unless in SLI/Crossfire etc config), so thats likely why your issue arose

Nick

old_aussie

armitage_skanks wrote: »

He is talking about a desktop.

Sorry, you are correct, I misread the OP's post.

Torqay

yoyo wrote: »

(you can't have more than one video card working at the same time unless in SLI/Crossfire etc config)

Not true. It really depends on the BIOS. And then there are USB graphic adapters that work in addition to the internal GPU.

yoyo

Torqay wrote: »

Not true. It really depends on the BIOS. And then there are USB graphic adapters that work in addition to the internal GPU.

I've never heard of running onboard & dedicated GPU similitaniously, I'm aware some machines support a graphics switching mode to preserve battery life but never heard of running both at the same time

Nick

Torqay

yoyo wrote: »

I've never heard of running onboard & dedicated GPU similitaniously

Sould be no problem with the newer Intel chipsets with FDI.

And then there is Hybrid Crossfire: How to Run a Graphics Card & an Onboard Video Simultaneously

Ages ago, when GPUs did not support multiple monitors, I had a PC with a AGP and a PCI (sans "e") graphics card to use two monitors.