Extended Display Monitor Temporarily Blacks Out

AlbanRampon · 04-13-2018, 09:08 AM

Hello!

1-2 seconds is a bit too quick for the issue to take place on the host.
Can you confirm the content of the displays is exactly where it was before the blackout and is NOT moved to the remaining display?

It sounds like your monitors are losing synchronisation. I would put that on the link to the monitor itself.

Once you've confirmed the screen content behaviour, we can look at mitigation.

Kind regards,
Alban

hundleyj · 04-16-2018, 04:12 PM

Alban,

Yes, the content of the display remains unchanged after the blackout.

AlbanRampon · 04-17-2018, 08:05 AM

Thank you.
That would tend to indicate Windows doesn't even know about this... so nothing happens on the host side.
This still points to the monitor losing synchronisation on the cable.

Could you please check your surroundings when this happens?
Is there someone using a gas lift chair standing up/sitting down near you?

Do your cables have ferrite beads on them? These removes transient signals.
https://en.wikipedia.org/wiki/Ferrite_bead

Kind regards,
Alban

hundleyj · 04-17-2018, 03:48 PM

There are no odd movements or electrical loads near the computer that I am aware of. The cables do not have a ferrite bead attached.

The issue seems to appear more frequently when I first log on to my computer, flashing black every second for 10 - 20 seconds. Then it flashes once a minutes for a couple minutes. Next it slows down to once every 10 - 15 minutes, and finally once or twice an hour. But there can be momentary spikes in occurrences throughout use of the computer.

hundleyj · 05-10-2018, 05:30 PM

I swapped out the DVI cables from docking station to KVMP switch and from KVMP switch to monitors with ones that have a ferrite bead, and the temporary backouts have stopped! It appears this was a cable issue...

Thanks for the help!!!

04-13-2018, 09:08 AM	#1
AlbanRampon Senior Member Join Date: Sep 2015 Posts: 1,685	Hello! 1-2 seconds is a bit too quick for the issue to take place on the host. Can you confirm the content of the displays is exactly where it was before the blackout and is NOT moved to the remaining display? It sounds like your monitors are losing synchronisation. I would put that on the link to the monitor itself. Once you've confirmed the screen content behaviour, we can look at mitigation. Kind regards, Alban __________________ Alban Rampon Senior product manager, universal docking stations and accessories Where to download the latest DisplayLink drivers How to clean up a corrupted installation How to report issues to DisplayLink for a speedy resolution

04-17-2018, 08:05 AM	#3
AlbanRampon Senior Member Join Date: Sep 2015 Posts: 1,685	Thank you. That would tend to indicate Windows doesn't even know about this... so nothing happens on the host side. This still points to the monitor losing synchronisation on the cable. Could you please check your surroundings when this happens? Is there someone using a gas lift chair standing up/sitting down near you? Do your cables have ferrite beads on them? These removes transient signals. https://en.wikipedia.org/wiki/Ferrite_bead Kind regards, Alban __________________ Alban Rampon Senior product manager, universal docking stations and accessories Where to download the latest DisplayLink drivers How to clean up a corrupted installation How to report issues to DisplayLink for a speedy resolution

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04-16-2018, 04:12 PM	#2
hundleyj Junior Member Join Date: Apr 2018 Posts: 4	Alban, Yes, the content of the display remains unchanged after the blackout.

04-17-2018, 03:48 PM	#4
hundleyj Junior Member Join Date: Apr 2018 Posts: 4	There are no odd movements or electrical loads near the computer that I am aware of. The cables do not have a ferrite bead attached. The issue seems to appear more frequently when I first log on to my computer, flashing black every second for 10 - 20 seconds. Then it flashes once a minutes for a couple minutes. Next it slows down to once every 10 - 15 minutes, and finally once or twice an hour. But there can be momentary spikes in occurrences throughout use of the computer.

05-10-2018, 05:30 PM	#5
hundleyj Junior Member Join Date: Apr 2018 Posts: 4	I swapped out the DVI cables from docking station to KVMP switch and from KVMP switch to monitors with ones that have a ferrite bead, and the temporary backouts have stopped! It appears this was a cable issue... Thanks for the help!!!