My monitor uses a display port cable and works fine, but sometimes I like to hook my tv up to the HDMI plug and extend the desktop to it, but the HDMI port seems to work intermittently. Works fine then it won't work. I thought I had it figured out by changing the HDMI input selection on the tv and then switching it back to the one it's plugged into, worked a few times doing this now nothing. Most recently I wanted to see what would happen if I only used the HDMI port on boot, well the tv shows the mobo post and then as soon as it gets to windows loading screen it throws a no signal code on the TV. Any help would be appreciated, thanks.

I think the cable is okay, it works with the intel hdmi out on the mobo, but the image quality is a lot better with my gpu. It's not a huge deal but sometimes i feel like using my tv. I have some other cables i could try but this cable is 20 feet and don't feel like moving my rig or tv at the moment.

I tried another cable I found and it works but it can't really configure this room to work with a short cable.

HeavyHemi

daniel0
I tried another cable I found and it works but it can't really configure this room to work with a short cable.

You need to get a longer High Speed HDMI cable. Monoprice is pretty good.
 
https://www.monoprice.com/product?p_id=15431

Or perhaps an hdmi balun setup over cat6. Can go very long distance with those.

 
It's almost never a corrupt driver install.
 
This is a signal issue like Hemi already concluded above, get a better cable.

IGP's are often able to establish a handshake on a cable that a add-in board can't.
 
Either cards are less tolerant to noise/snr or IGP hdmi ports filter it better.
HeavyHemi might have an idea whats up there but it is something i've personally noticed with long cables.

squall-leonhart
IGP's are often able to establish a handshake on a cable that a add-in board can't.
 
Either cards are less tolerant to noise/snr or IGP hdmi ports filter it better.
HeavyHemi might have an idea whats up there but it is something i've personally noticed with long cables.

I'm not sure this (IGP being more stable) is true as as I expect most IGP are not running at 4K. It's driving 4K where we are having issues. And I suspect the issue is with cables. We've even seen this to some extent with DP at 4K. This could all be related to cable manufactures trying to pinch pennies. Almost without exception a cable resolves the issue, unless you've got a defective port. 

squall-leonhart
Well, we don't know what IGP op has, so we can't rule out 4k there just yet.
 
. . . and sharp is already manufacturing a 8k screen - nobody is ready for this.

True. But the most important thing the OP posted was "I tried another cable I found and it works but it can't really configure this room to work with a short cable."
So he's fine, with a shorter cable which rules out the driver. Hopefully his GPU works with the longer cable. Everyone should be giddy that manufactures are driving resolution.  If we can't have
'Will it run Crysis' with a game driving innovation, resolution increasing is an analog.

squall-leonhart
But will it run Star Citizen ;)

I've not paid (figuratively and literally) any attention to it other than what I've gleaned from the few arguments I've read.   Who knows maybe eventually...or not. ;)

Sajin

HeavyHemi

Sajin

squall-leonhart
 
It's almost never a corrupt driver install.
 
This is a signal issue like Hemi already concluded above, get a better cable.

Well the op said his cable works fine with the igpu. Reinstalling the driver isn't going to hurt anything. The problem may be coming from the hdmi output on the gpu itself.

Also, his igpu is probably running at a lower resolution, and a shorter cable works...so hey it's the cable confirmed already by the OP.

And his 20 foot cabled worked intermittently. One test with a short cable proves nothing. More testing needs to be done.

Well sure.  It could be the GPU which I acknowledge by saying I hope the new cable works.  We can eliminate the driver right?  Anything else we can rehash?