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[GH-ISSUE #398] Not working with Dell u2518d and iMac 2017 4k #318

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opened 2026-05-05 05:44:10 -06:00 by gitea-mirror · 5 comments
gitea-mirror commented 2026-05-05 05:44:10 -06:00
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Originally created by @seanbperiod on GitHub (Mar 1, 2021).
Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/398

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Describe the issue
I have a Dell u2518d connected via USB C to the iMac 2017 4K - but MC says no display supported found. I checked to see if the monitor supported, which it does. I think the monitor shows up in MC Display preferences as unknown, ID 69933012 Vendor 0x610 and Model 0xAE1B. Enabled is checked, DDC is disabled.

Environment Information (please complete the following information):

  • macOS version: Big Sur 11.2.2
  • MonitorControl version: 2.1 Build 721
  • Monitor(s): u2518d
  • Mac model: iMac 2017 4k
  • Monitor Cable(s)/Connection(s): (e.g. DisplayPort) USB C to Displayport
Originally created by @seanbperiod on GitHub (Mar 1, 2021). Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/398 **Checklist** <!-- Before you submit your issue, please make sure to check the following boxes by putting an x in the [ ] (don't: [x ], [ x], do: [x]) --> - [x] I have searched for existing issues - [x] I have looked through [the Monitor Troubleshooting wiki](https://github.com/MonitorControl/MonitorControl/wiki/Monitor-Troubleshooting) - [x] I have updated MonitorControl to the latest version **Describe the issue** I have a Dell u2518d connected via USB C to the iMac 2017 4K - but MC says no display supported found. I checked to see if the monitor supported, which it does. I think the monitor shows up in MC Display preferences as unknown, ID 69933012 Vendor 0x610 and Model 0xAE1B. Enabled is checked, DDC is disabled. **Environment Information (please complete the following information):** - macOS version: Big Sur 11.2.2 - MonitorControl version: 2.1 Build 721 - Monitor(s): u2518d - Mac model: iMac 2017 4k - Monitor Cable(s)/Connection(s): (e.g. DisplayPort) USB C to Displayport
gitea-mirror 2026-05-05 05:44:10 -06:00
gitea-mirror commented 2026-05-05 05:44:16 -06:00
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@waydabber commented on GitHub (Aug 21, 2021):

Hey, can you please test the issue with the latest 3.0.0 version and report back if you still have this issue? Also, were you able to control the display using ddctl as described here?

https://github.com/MonitorControl/MonitorControl/wiki/Monitor-Troubleshooting

Thank you!

<!-- gh-comment-id:903118311 --> @waydabber commented on GitHub (Aug 21, 2021): Hey, can you please test the issue with the latest 3.0.0 version and report back if you still have this issue? Also, were you able to control the display using ddctl as described here? https://github.com/MonitorControl/MonitorControl/wiki/Monitor-Troubleshooting Thank you!
gitea-mirror commented 2026-05-05 05:44:18 -06:00
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@gcg commented on GitHub (Aug 21, 2021):

with the 3 RC, it started to work for my mac mini (m1) and dell u2518d

<!-- gh-comment-id:903176713 --> @gcg commented on GitHub (Aug 21, 2021): with the 3 RC, it started to work for my mac mini (m1) and dell u2518d
gitea-mirror commented 2026-05-05 05:44:20 -06:00
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@waydabber commented on GitHub (Aug 21, 2021):

Great! I will close this issue then. Thanks for the reply! :)

<!-- gh-comment-id:903177067 --> @waydabber commented on GitHub (Aug 21, 2021): Great! I will close this issue then. Thanks for the reply! :)
gitea-mirror commented 2026-05-05 05:44:23 -06:00
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@seanbperiod commented on GitHub (Aug 23, 2021):

Yep confirmed working here too. Thanks! 👍

<!-- gh-comment-id:903700208 --> @seanbperiod commented on GitHub (Aug 23, 2021): Yep confirmed working here too. Thanks! 👍
gitea-mirror commented 2026-05-05 05:44:26 -06:00
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@waydabber commented on GitHub (Aug 23, 2021):

Thanks for the feedback!

<!-- gh-comment-id:904096829 --> @waydabber commented on GitHub (Aug 23, 2021): Thanks for the feedback!
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