[GH-ISSUE #1746] Displaylink MacOS driver supports DDC brightness control since v1.12.1, possible with MonitorControl or BetterDisplay? #969

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opened 2026-05-05 06:57:36 -06:00 by gitea-mirror · 1 comment

gitea-mirror commented

2026-05-05 06:57:36 -06:00

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Originally created by @me-honest on GitHub (Apr 4, 2025).
Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1746

Before opening the issue, have you...?

Searched for existing issues

It has come to my attention that the latest DisplayLink driver comes with brightness and contrast sliders, using native DDC hardware control:

This is a long awaited feature which has been requested since 2016. Now that this capability is available in the DisplayLink GUI, is it possible to somehow control it via any of the two applications? I tried with both, and no luck, since they are detected as "Virtual displays" they can't use hardware DCC.

Describe the solution you'd like

Brightness and contrast are controllable via DCC using MonitorControl.

Describe alternatives you've considered

Clicking on the DisplayLink sliders every time I want to change brightness.

Anything else?

No response

Originally created by @me-honest on GitHub (Apr 4, 2025). Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1746 ### Before opening the issue, have you...? - [x] Searched for existing issues ### Is your feature request related to a problem? Please describe It has come to my attention that the latest DisplayLink driver comes with brightness and contrast sliders, using native DDC hardware control: ![Image](https://github.com/user-attachments/assets/491b3db2-8114-4285-a8ff-1cd1901b23ce) This is a long awaited feature which has been requested since 2016. Now that this capability is available in the DisplayLink GUI, is it possible to somehow control it via any of the two applications? I tried with both, and no luck, since they are detected as "Virtual displays" they can't use hardware DCC. ### Describe the solution you'd like Brightness and contrast are controllable via DCC using MonitorControl. ### Describe alternatives you've considered Clicking on the DisplayLink sliders every time I want to change brightness. ### Anything else? _No response_

gitea-mirror closed this issue

2026-05-05 06:57:37 -06:00

gitea-mirror commented

2026-05-05 06:57:41 -06:00

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Owner

@waydabber commented on GitHub (Apr 4, 2025):

I reached out to them in the past about adding DDC control or having an API or something, but they did not respond besides some generic corporate stuff. I'd be happy to add support but some kind of API would be needed. DisplayLink hardware in general can handle DDC (it did on Windows for a long time) - on macOS they must be using this capability now but in a way that is not exposed outside afaik. If you open a thread about it inthe Mac Software forum, I will chime in! https://www.displaylink.org/forum/forumdisplay.php?s=8162370dc288177e93d5bf83fa7c1225&f=30

@waydabber commented on GitHub (Apr 4, 2025): I reached out to them in the past about adding DDC control or having an API or something, but they did not respond besides some generic corporate stuff. I'd be happy to add support but some kind of API would be needed. DisplayLink hardware in general can handle DDC (it did on Windows for a long time) - on macOS they must be using this capability now but in a way that is not exposed outside afaik. If you open a thread about it inthe Mac Software forum, I will chime in! https://www.displaylink.org/forum/forumdisplay.php?s=8162370dc288177e93d5bf83fa7c1225&f=30