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February 2nd, 2025 09:26
U2724DE, intense screen flickering
Hi Dell Team,
I bought this Dell U2724DE a few days ago, and I'm experiencing really intense screen flickering. It was really bad (almost constant) when I used the out-of-the-box DP cable that came with the monitor, after which I switched it out for an [ALOGIC 2M 1.2 DP cable] which seemed to fix it for a day or two, but the flickering has since returned (although slightly less frequently - a flickering episode every few minutes maybe; see attached video).
What could be the problem / do we have ideas for a solution?
My exact set-up for reference:
- DP1.2 from PC to Dell U2724DE
- Daisy-chaining to a LG25MS500 via: Dell U2724DE -> [active DP-to-HDMI adapter] -> HDMI-to-HDMI cable -> LG25MS500
([DP-to-HDMI is this one specifically: https://www.amazon.com.au/Plugable-DisplayPort-Supports-displays-3840x2160/dp/B00S0C7QO8/?th=1) - and a bunch of peripherals plugged in (mouse, speakers, TB4-to-laptop, Qi charger, etc.)
Thanks,
K
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keisee
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3 Posts
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February 2nd, 2025 09:29
PC specs if relevant:
Various PC settings if relevant:
DELL-Chris M
Community Manager
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56.8K Posts
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February 2nd, 2025 13:44
Dell Support must verify the ownership and warranty status. Click the blue "Get Help Now" on the right to start a private live chat session. Share the private U2724DE Service Tag with them.
Simplify the setup.
See pages 43/44 in the online U2724DE User's Guide. Dell doesn't test/validate monitor DP MST daisy chaining using HDMI converter and HDMI cables.
Disconnect all of those peripherals from the U2724DE. Disconnect the second monitor and cabling and laptop from the U2724DE.
Start with this BASIC 1 PC setup and tell us if you have screen flickering =
PC DP out port --> U2724DE DP to DP cable --> U2724DE #4 DP in port
USB mouse --> U2724DE #9 USB-A port
USB keyboard --> U2724DE #10 USB-A port
PC USB-A port --> U2724DE USB-A to USB-C cable --> U2724DE #8 USB-C upstream port
If no screen flickering, add the Laptop and retest =
Laptop TB4 --> U2724DE TB4 to TB4 cable --> U2724DE #7 TB4 upstream
If no screen flickering, start adding one peripheral device at a time and retesting.
keisee
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3 Posts
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February 3rd, 2025 13:06
Hey Chris, thanks for the response / direction
I've gone to the [extra BASIC 1 PC] set-up. i.e.:
Can confirm I'm still getting the occasional flicker (can send through a video if needed, but it is similar to the above - just less frequent / less intense);
Attached picture of cable set-up to be sure (can also confirm this DP cable works fine when used with my other monitor (Viewsonic XG2405)):
I will continue adding cables as noted above to see if flickering worsens in the meantime, but let me know your thoughts
DELL-Chris M
Community Manager
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56.8K Posts
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February 3rd, 2025 13:42
If it fails in the basic setup, contact GHN to get an exchange.