My screen was tinted green?

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mangaman

mangaman

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Jun 13, 2015
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After doing something for about 20 or so minutes, I came back to my computer to wake the screen up from sleeping. After doing so, my screen was tinted green. It was not my monitor as I turned it off and back on, as well as the on screen menu for my monitor being perfectly fine. I did the color calibration, but it just made the situation much more worse so I just canceled it.

My HDMI switch is also not the issue, as I unplugged it and did a direct HDMI link from my monitor to the GPU. Finally, after restarting my system, the issue went away. So, what caused the weird problem, and how do I avoid it in the near future???
 
Solution
bailojustin


Do you use any adapters? what resolution are you pushing? what HDMI version are you using? what Refresh Rate?

Is your HDMI switch externally powered like that of a KVM, if so it most likely takes in EDID's from all connected HDMI monitors, then sends these cached or stored EDIDs to the GPU which then returns with the supplied EDID and connection information, which would lead to you having that issue upon the computer sleeping, The computer now has the EDID information and the connection was never truly removed due to the switch, thus the...
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bailojustin

bailojustin

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Dec 7, 2014
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Do you use any adapters? what resolution are you pushing? what HDMI version are you using? what Refresh Rate?

Is your HDMI switch externally powered like that of a KVM, if so it most likely takes in EDID's from all connected HDMI monitors, then sends these cached or stored EDIDs to the GPU which then returns with the supplied EDID and connection information, which would lead to you having that issue upon the computer sleeping, The computer now has the EDID information and the connection was never truly removed due to the switch, thus the reason for reconnecting a direct link VIA hdmi to the monitor wouldnot fix the issue

The EDID is already stored and its sesing the same Monitor as before, so sends the same signal. Upon the REBOOT the EDID IS refreshed and the computer no longer is sending/recieving an impartial/corrupted EDID from either HDMI switch, or monitor.

Most likely pulls the EDID quickly or is assigned the wrong one, which commonly happens with these kinds of switches especially if they are externally powered.

Try buying a high quality HDMI switch, or a 2head hdmi KVM with Smart EDID, or EDID emulation, such as a defualt stored edid cache.

Again this is all speculation pulling from knowledge from years of troubleshooting and recently messing with hundreds of different switches/resolutions and adapters
 
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Solution
mangaman

mangaman

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Jun 13, 2015
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The information you have stated was very helpful. I did not know that EDID's could be stored in the GPU, even with the removal and plugging back in of the HDMI cable.

I know one time I had my Xbox 360 hooked up to my switch along with my PC in the same switch. When I went to choose the input of my PC to get a gaming tutorial up, the resolution was all messed and static was all over the screen. I went back to my 360, then back to my computer input and everything was fine.

The switch that I bought on amazon has only given myself two problems, over the course of the two years after buying it. This and the 360 issue. Other than that, I can have other inputs in the switch without any problems. Unfortunately I can not buy another switch, so I will have to make do of what I have. The switch I have is a J-Tech Digital model JTD4KSP0301, and has a 4.6/5 rating on amazon.
 
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bailojustin

bailojustin

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"The device also supports 3 ports of on-chip EDID RAM and programmable passive/active DDC switch." so I would check if there is a manual and take a look into refreshing the cache or edid store on the device, some edid may become corrupt over time, especially if the ram storing it is not "high quality or performance" ram then its lifetime will be around 1-2 years for such a switch. Most likely its just time taking a toll on the hardware. if the problem proceds to slowly get worse or occurs more and more often then I would try another one, Purchase the samer, if it stops, problem solved, and you now ahve a new switch to replace your defective.

tahts only if it affects you and you feel like it of course, only other possible cause is physical connections, edid stores on the registry in OS, monitor, and switch.

Monitors also have their lifetime shortened by switches and sleep due to the switching and constant phasing of the monitors relay eventually leading to damage.
 
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mangaman

mangaman

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Jun 13, 2015
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So it looks like the switch was the problem. Since I don't need anything plugged into the switch, I will just do a straight connection from my GPU to my monitor. Thanks for the really helpful and needed information. If I need multiple HDMI connections to my monitor, I will plug the switch back in.
 
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