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HDMI 5m works , but has green lines when I add a 1.5m extention

Last response: in Graphics & Displays
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August 13, 2013 9:31:56 AM

So here is the situation:

HDMI 5m + extention 1.5m = green lines all over screen
HDMI 1.5m + extention 1.5m = works
HDMI 5m = works

What is the problem?

Best solution

August 13, 2013 9:40:24 AM

Likely, it is signal loss on the longest combination (5m+1.5m) because of the connector. A single, longer cable should do the trick.
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August 13, 2013 9:41:03 AM

The problem is the length and the extension chord.
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August 14, 2013 6:21:52 AM

7.5m worked, thx!
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August 14, 2013 2:54:25 PM

Oh my god.

So, I used my new 7.5m cable happily, then I replaced my 4850 with 7950 3gb card. Now my 7.5m cable doesn't work any more. Tested it with my laptop, also doesn't work.

My 7.5 cable ONLY worked with my old card. WHAT THE HELL :( 
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August 14, 2013 3:43:58 PM

You may need to reload the hdmi drivers.
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August 14, 2013 3:48:17 PM

I tried installing drivers again while HDMI cable was connected, nothing. TV is visible on my PC as one of my screens now, but doesn't get the signal at all (displays no signal on TV).
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August 15, 2013 4:39:18 AM

Returned all cables to the store for a full refund :)  .

Guys, do you know what can I do to KNOW that a certain cable will work at 7.5meters? Like, what should I look for in the cable specification?
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August 15, 2013 6:15:12 AM

The shorter cables, with both GPUs worked properly?

Also, what cable did you get (and returned)? Was is a bargain cable or a more expensive, more shielded cable?
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August 15, 2013 6:27:03 AM

Yeah, shorter cables worked perfectly. I got a bargain cable xD
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August 15, 2013 8:34:38 AM

I live in Serbia, so I can't use newegg. Can you tell me what to look for in a cable generally?
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August 15, 2013 8:34:39 AM

I live in Serbia, so I can't use newegg. Can you tell me what to look for in a cable generally?
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August 15, 2013 8:40:39 AM

Understood. You want a more heavily shielded cable than provided by the bargain bin cables. Gold connectors help as well for greater conductivity.
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August 15, 2013 8:50:17 AM

Do you think something like this would work?
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August 15, 2013 8:52:47 AM

Like what? Nothing was linked.
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August 15, 2013 9:08:32 AM

Looks like a decent cable (at least the connectors). I am not sure about the braided cable though.
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August 15, 2013 10:25:30 AM

@zivlaks, if nothing works try a Dual Link DVI cable. BTW what is the resolution of monitor/tv ?
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August 15, 2013 10:46:51 AM

I tried with 2 TVs, both 720p and 1080p , and I never sent the TV a bigger resolution than it could handle.
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August 15, 2013 11:25:15 AM

Do you know one thing that HDMI cables are unable to display correctly a resolution on 1080i/p or beyond. So the best bet is a DL DVI cable.
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