multimonitor display screens flashing brands
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You may face random flashing in the second monitor or total blackout which comes and goes repetitively giving you the idea as if it has gone to sleep mode, whereas your main monitor is working smoothly.
Most of the time, you just need to increase the refresh rate of your monitor to eliminate flickering. The refresh rate i.e the number of times your monitor updates its display per second depends on the load of information it is getting.
Moreover, you can also check for any bent pins or broken cables which can display a frequent black screen on random events. Sometimes, sockets may be the cause of your lacking experience, so just keep a check on them till you’re good to go.
If you have any other electronic device nearby your computer setup then you can get an interrupted display. The reason behind it is these devices surround themselves in a magnetic field which disrupts the signals sent within the PC.
Moving away from such appliances, even fans or phones, can make your display better. Furthermore, if the electrical wiring and internal grounding of your house aren’t properly installed then even this can cause flickering.
As per a PC Magazine blog, in 2010, an entire batch of Macbook face screens was flickering due to driver errors, which forced developers to immediately launch an update.
You can also stabilize the flickering by adjusting the display on your graphics card. Whether you have an Intel or NVIDIA graphics card, just open the GPU control panel from the start menu.
On the control panel window, you’ll find a display tab which you can expand to find the option for setting up multiple displays. You can see two screens labeled 1 and 2, indicating primary and secondary monitors.
As you know that refresh rate can be one of the reasons for flickering screens. You can check the refresh rate of your second monitor and adjust it properly.
Adjusting the color settings can stop flickering on your second monitor if the monitor is connected using an HDMI cable. The method hasn’t proved useful for monitors that are connected through DisplayPort, VGA, and DVI.
Screen flickering can be caused by a malfunctioning or damaged cable, but it could also be because of the type of display cable you’re using. If your second monitor is connected via HDMI, try using DisplayPort, VGA, or DVI instead to see if this solves the issue. I recommend using DisplayPort if HDMI doesn’t work.
If you happen to have an extra display cable laying around the house. Borrow it to troubleshoot your secondary monitor. Connect the monitor via the borrowed cable to see if the device functions without hindrance or if the issue remains. If the problem persists, then it’s most likely not the cable that’s causing it.

Be sure to try the Display driver steps to find the driver which works best to resolve the problem if it returns. Hopefully not, but one of the steps I gave above will usually fix it, so bookmark the thread in case you need to refer back to it.

The docking station connects to the MacBook via a thunderbolt 3 cable. The AOC monitor is connected directly to the docking with DisplayPort. The BenQ is then connected to the remaining Thunderbolt 3 port on my Mac via a HDMI-USB-C adapter. The docking station provides power to the Mac.

I have a multi-screen desktop. I have 4 screens in total. Three of them are in NVIDIA Surround setup. My issue is when playing any video on my right most screen the video will blink (only the video not the screen or the web page) however it does not blink when I move the video to the other screens in the Surround or on the extra screen. This happens with any video service.

Compared to older displays, LCD monitors are an excellent low-cost, low-power solution to our need for a computer display. Unfortunately, some monitor settings can make an LCD screen appear to flicker.
Although your computer monitor may appear to be a still image when no one is using it, it is actually being updated constantly. Much like a film strip is just a bunch of static images displayed quickly, your monitor updates at a fast rate to make it look like things are moving smoothly on the screen.
To choose a new refresh rate for your LCD monitor in Windows, begin by clicking on Start > Control Panel > Appearance and Personalization > Display. If you are on Windows 8 or 10, just right-click on the Start button and choose Control Panel. If you’re in icon view, you can click directly on Display.
Click on the Monitor tab and you will notice a few things. First, notice the setting labeledScreen Refresh Rate. This is the current refresh rate for your LCD monitor. Click the drop down menu and Windows will display all of the refresh rates possible for your monitor.
It is likely that your monitor can only use one or two refresh rates, so this list may not be long. Some manufacturers build monitors that can display anywhere from 30 Hertz to 200 Hertz. Normally, monitors with higher refresh rates will be more expensive. A common refresh rate for gaming monitors is 144 Hertz. If the price of a monitor seems too cheap to you, it’s probably because it has a low refresh rate. For example, some new 4K monitors are cheap, but are only 30 Hertz, which can make everything look choppy on the screen.
On the Monitor tab shown above, there is an option that is checked by default called Hide Modes That This Monitor Cannot Display. By unchecking this option, you can force Windows to use any refresh rate for your monitor that you want.
Notice that right underneath this option, Windows warns you about an unusable or damaged display. Uncheck this option and set your monitor to an unsupported refresh rate at your own risk. Depending on your version of Windows, this option may be grayed out, meaning you can only pick from the refresh rates listed in the box.
For Mac users running OS X, you can go to System Preferences and click on Display. Here you can change the refresh rate for an external display connected to your Mac.
Input Port – Another solution is to use a different port on the monitor, if possible. For example, if you are connecting using HDMI, try DVI or DisplayPort or VGA instead and see if that fixes the problem.

The triple-monitor docking station works attaching 2 monitors to the DisplayPort ports of the stations (with a DisplayLink chipset inside that manage those) and the third monitor is connected to the HMDI port using the USB-C port external display support.
I have a very uncomfortable problem of flickering related to the monitor attached to the HDMI port, the 2 connected to the DP ports (which are managed by the DisplayLink chipset of the station itself) does not have any problems.
You can see the docking station under the right monitor. The left and middle monitors are connected to the DisplayPort ports of the station, while the right monitor is connected to the HDMI port of the station.
I also opened a thread in DisplayLink forum (https://displaylink.org/forum/showthread.php?t=66317 https://displaylink.org/forum/showthread.php?t=66317), they helped me with some suggestions and analysis, but at the end the problem cannot be related to their chipset due to the nature on how the video signal are managed (the HDMI attached monitor is managed by the internal Intel graphic chipset, the DisplayLink chipset only manage the additional 2 monitors.

If you do not have access to the Intel Graphics Command Center, you can change the refresh rate to a lower setting using Windows Advance Display Settings

The monitor is connected via Displayport and the pen display is connected via hdmi. But for some reason when it"s on expand settings it just doesn"t work and starts flickering and it doesn"t let me do anything.

YET AGAIN i get the flicker to occur just like it did with display port thats super annoying and thats when i finally (probably longer than it should have taken) to realize its a timing issue an nothing else
SO I now choose CVT option and boom problem solved. No flicker perfect image all sunshine and bunnies...until you let the display go to sleep and then on wake up it all goes to hell on the custom profile.. so I read on some more and like the OP had success by changing the refresh rate to 35hz...and boom now it really does look and work perfect....except until something moves on the screen and its at 35hz. :/
So I went and switched back to display port hoping the 35hz to solve restart was a HDMI limitation. Now when I choose CVT option the monitor goes to hell immediately when running DP and still has flicker with CVT REDUCED BANK. so now thats out

However, using a black uniformity test can help uncover other display issues such as backlight bleed and clouding. Be sure to implement that test after you’ve resolved screen flickering.
Fortunately, troubleshooting screen flickering on Windows 10 monitor doesn’t require a trip to the repair shop. In most cases, if your Windows 10 screen is constantly flickering, it’s likely due to a faulty application installed or a problematic display driver.
Before you do anything, you need to establish if your Windows 10 screen flickering issue is a Display Driver issue or an Application Compatibility issue.
To check for faulty windows 10 display drivers, do the following:Press the Windows taskbar button and toggle the gear symbol to access your PC setting. Activate the “Update & Security” option tab. If your computer recently scanned for available updates, you will be able to see a list of pending updates requiring immediate updating.
Ms.Josey
Ms.Josey