we had some issues with 2 monitors connected to the g5 dockning / 1 goes black for 30-40 secs

[stenroos67]

1 of 2 monitors goes black for to long time, a flickering is not to hard to accept but when gone to long our sales personal perhaps gets really affected, our laptops i elitebook 840 generation 7 with 16GB ram , the monitors are connected by docking and dp cabling , i have updated Bios/ set monitors to find dp always, updated drivers , last thing i did was to update monitors firmware, this was nott ohard but after 26 updates 4 of them is now totally black, i cnat turn them on at all, any idea on how i get them going again, since they arent "on" my pc cnt see them and update them again

[BeemerBiker]

This could be a pin 20 problem, or the signal from some of the laptops is not strong enough.  I had the same problem after replacing a GTX-1060 with a GTX-1070Ti. I was unable to drive the monitor (a TV) and had to remove a right angle HDMI, the HDMI switch, an HDMI pass-though adapter and had to buy an expensive cable and run it directly to the alt input of the TV.  The new graphics board simply did not out a good enough signal.   

If you do get new Display Port cables make sure they do not have the pin 20 problem 

I asked Google's AI about a weak signal and it overshared as usual:

To boost a weak DisplayPort signal, the most common solution is to replace your DisplayPort cable with a new, high-quality one as a faulty cable is often the primary cause of a weak signal; you can also try using a DisplayPort signal booster or checking for secure connections at both the monitor and computer end, and potentially adjusting your graphics card settings if necessary. [1, 2, 3, 4, 5]

Here are a few steps to troubleshoot and boost your DisplayPort signal: [1, 4, 5]

• Check the cable: [1, 4, 5]
  • Inspect for damage: Look for any visible signs of wear and tear like fraying, bends, or broken connectors on the cable. [1, 4, 5]
  • Try a different cable: Swap your current DisplayPort cable with a new, high-quality cable to see if the issue persists. [1, 2, 4]
  • Ensure secure connection: Double-check that the cable is fully plugged into both the monitor and computer ports. [1, 2, 6]
• Use a DisplayPort signal booster: [3, 7, 8]
  • Active repeaters: Consider using a dedicated DisplayPort signal booster (also called an active repeater) which can amplify the signal over longer distances. [3, 7, 8]
• Monitor settings: [2, 6, 9]
  • Check display settings: Ensure your monitor settings are optimized for the resolution and refresh rate you are using. [2, 6, 9]
• Graphics card settings: [2, 9]
  • Update drivers: Update your graphics card drivers to the latest version as outdated drivers can sometimes cause signal issues. [2, 9]
  • Adjust settings: Depending on your graphics card, you may be able to adjust settings related to DisplayPort output quality. [2, 6, 9]

Important points to consider: [7, 8]

• Cable length: Longer cables can sometimes weaken the signal, so if possible, use a shorter cable for better signal strength. [7, 8]
• DisplayPort version: Ensure your cable is compatible with the DisplayPort version supported by your monitor and computer. [3, 7, 10]
• Port issues: If you suspect the issue is with the DisplayPort port itself, try using a different port on your computer or monitor. [2, 6, 8]

Generative AI is experimental.

[1] https://cabletimetech.com/blogs/knowledge/resolving-the-no-displayport-signal-issue-effective-steps

[2] https://computercity.com/hardware/displays/no-dp-signal-from-your-device-dell-monitor

[3] https://www.startech.com/en-us/audio-video-products/dpboost

[4] https://www.hp.com/us-en/shop/tech-takes/monitor-ghosting-fix

[5] https://www.cablewholesale.com/blog/index.php/2023/02/19/5-signs-your-displayport-cable-is-damaged/

[6] https://www.anker.com/blogs/hubs-and-docks/display-ports-on-pc

[7] https://www.amazon.com/Cable-Matters-102039-DisplayPort-Repeater/dp/B07D949F59

[8] https://www.amazon.com/Cable-Matters-DisplayPort-Extension-Feet/dp/B00L1K1C3M

[9] https://www.hp.com/us-en/shop/tech-takes/displayport-vs-hdmi

[10] https://www.avaccess.com/blogs/guides/displayport-1-4-vs-hdmi-2-1-gaming/