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November 24th, 2018 13:00
U2717D, no signal, fix disable DDC/CI
Purchased two of the U2717D monitors and set them up with a Dell E6440 and an E-Port Plus Advanced docking station. Monitors worked fantastic initially using the two DP to mDP cables provided with the monitor. However, any restart, sleep mode, power off/on resulted in at least one of the monitors having a black screen "no signal" message. Although the computer recognized the monitor as being connected. Frustrating part about this problem is that it was tough to replicate; sometimes the problem would be one monitor or the other; sometimes just unplugging and plugging in the mDP cable would fix it.
Read nearly every post on these issues and what worked for me was disabling the DDC/CI setting in the monitor menu under Other.
Now my monitors come up perfectly after sleep mode or restarting. Wanted to add this to the forums as a potential solution for others although I would like to know what might be causing this? Would be nice to be able to use that DDC/CI feature along with the DDM software at some point.
I had tried the fixes below before trying the above option:
- New cables
- Turn off monitor sleep setting
- Update BIOS, graphics card driver
DELL-Chris M
Community Manager
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November 27th, 2018 13:00
Did you disable DDC/CI in both U2717D? DDC/CI (Display Data Channel/Command Interface) allows
you to adjust the monitor settings using software on your PC. So DDM (Dell Display Manager) would no longer function when DDC/CI is disabled. I do not know what Windows 10 display settings may have also been effected.
JGR8641
2 Posts
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November 28th, 2018 05:00
Hi Chris,
I did disable the DDC/CI setting in both monitors although I may play around with a bit more to see if just disabling one has the same impact.
Also, I did not state this initially but I am running Windows 7 enterprise through a work laptop and not Windows 10. Would be nice to be able to use the DDM software as it seems like a great tool.
Thanks!
Stag82
1 Rookie
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November 27th, 2019 00:00
Thank you for sharing this. Worked for me.
This behavior frustrated me for a while.
My config: E-Port Replicator + Dell E2216H Monitors + DP
swamped207
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426 Posts
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November 28th, 2019 06:00
I think you'll find this is an ePort issue, not a U2717D issue.