November 3, 2017 at 11:53PM

4

My external monitor keep flickering via HDMI (10m)

Hello my name is Oudom. I have problem connecting my TV as external monitor.

I would like to use my Sony 4k TV 49'' (model kd-49x8300c) to view when I want to do the CC/Grading. But when I connect it using HDMI, it keeps flickering. I have set in Display settings as Extend monitor and resolution is 4k (I even try 1080p but It still flicker). I have update my VGA to the latest one already.

one thing I notice is, its not flicker all the time. I realized that when I unplug the HDMI cable and plug it again.. it works for awhile. but it come back flickering in no time. and sometime the screen changed to purple color and split it 2 screen on that tv. Is it cuz of my HDMI cable is 10 meter? too long? but its not flicker once I use only this TV as my main monitor (not extend). or is it cuz of my main monitor is 2k and extended it to 4k TV (but I have tried changing my TV to the same 2k res as my Monitor, still not working) ? Please help me!

PC spec:
Windows 10
Intel i9 7900X CPU
RAM 32
VGA Nvidia 1080 TI
Monitor: DELL U2715H
TV: Sony 4k TV 49'' (model kd-49x8300c)

4 Comments

Does it flicker with a short 1 or 2 meter cable ? ( you might have to add a HDMI signal booster to clear up the flicker )

November 4, 2017 at 9:03PM

0
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Guy McLoughlin
Video Producer
32221

Hi, I didnt try with the shorter HDMI cable but its actually not flicker if i use that TV as my main monitor with the same cable.

November 4, 2017 at 10:27PM

4
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Rh Oudom
Director / DoP / VFX
195

The signal from HDMI is not quite strong enough. HDMI cables are usually only rated out to roughly 30 feet (a little over 9 meters) companies sell these cables regardless though. You will need a cable with a signal booster built or one you can add on before you get to 9 meters or a shorter cable. I would suggest just using a shorter cable and cut down on clutter.

November 5, 2017 at 11:42PM

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Kyle Acker
Cinematographer/ Video Editor
387

Hi Kyle,
Thanks for your suggestion. I will try it

November 6, 2017 at 8:02PM

1
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Rh Oudom
Director / DoP / VFX
195

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