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[GH-ISSUE #1290] Improve DDC support for built-in HDMI 2.0 ports of some newer macs #737

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opened 2026-05-05 06:36:24 -06:00 by gitea-mirror · 4 comments

gitea-mirror commented

2026-05-05 06:36:24 -06:00

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Originally created by @KrzysztofPrzygoda on GitHub (Jan 18, 2023).
Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1290

Before opening the issue, have you...?

Searched for existing issues
Read through the Monitor-Troubleshooting Wiki
Updated MonitorControl to the latest version (if applicable)

Describe the issue

Can't DCC contol monitor over HDMI build-in port, although it's possible on Lunar app.

Expected behavior

Flawless DCC control over built-in HDMI port.

Anything else?

Here are specifics of the issue initiated by me at BetterDisplay:
https://github.com/waydabber/BetterDisplay/issues/1363
https://github.com/waydabber/BetterDisplay/issues/1364

Lunar app has flawless DCC control over HDMI M-M.
MonitorControl app does not work on LG 27UP850-W and MacBook Pro 16 Apple M1 Max.

Environment Information (please complete the following information)

- macOS version: Ventura 13.1
- Mac model: MacBookPro18,2
- MonitorControl version: 4.1.0
- Monitor(s): LG 27UP850-W
- Monitor Cable(s)/Connection(s): HDMI-HDMI 
- Apple Silicon/M1 (yes or no): yes, M1 Max

Originally created by @KrzysztofPrzygoda on GitHub (Jan 18, 2023). Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1290 ### Before opening the issue, have you...? - [X] Searched for existing issues - [X] Read through [the Monitor-Troubleshooting Wiki](https://github.com/MonitorControl/MonitorControl/wiki/Monitor-Troubleshooting) - [X] Updated MonitorControl to the latest version (if applicable) ### Describe the issue Can't DCC contol monitor over HDMI build-in port, although it's possible on Lunar app. ### Expected behavior Flawless DCC control over built-in HDMI port. ### Anything else? Here are specifics of the issue initiated by me at BetterDisplay: https://github.com/waydabber/BetterDisplay/issues/1363 https://github.com/waydabber/BetterDisplay/issues/1364 Lunar app has flawless DCC control over HDMI M-M. MonitorControl app does not work on LG 27UP850-W and MacBook Pro 16 Apple M1 Max. ### Environment Information (please complete the following information) ```markdown - macOS version: Ventura 13.1 - Mac model: MacBookPro18,2 - MonitorControl version: 4.1.0 - Monitor(s): LG 27UP850-W - Monitor Cable(s)/Connection(s): HDMI-HDMI - Apple Silicon/M1 (yes or no): yes, M1 Max ```

gitea-mirror

2026-05-05 06:36:24 -06:00

closed this issue
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Status: Abandoned

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gitea-mirror commented

2026-05-05 06:36:30 -06:00

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@waydabber commented on GitHub (Jan 18, 2023):

Right, finally figured out what works differently with that port (took most of my day today...). I'll do some testing with various hardware and if it works fine, it will be in the next BetterDisplay release. Will hopefully implement in MC as well in a future update!

@waydabber commented on GitHub (Jan 18, 2023): Right, finally figured out what works differently with that port (took most of my day today...). I'll do some testing with various hardware and if it works fine, it will be in the next BetterDisplay release. Will hopefully implement in MC as well in a future update!

gitea-mirror commented

2026-05-05 06:36:34 -06:00

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@dzirtusss commented on GitHub (Apr 3, 2023):

@waydabber any technical details on the way how you made it work? Thanks in advance if you can guide something on that...

@dzirtusss commented on GitHub (Apr 3, 2023): @waydabber any technical details on the way how you made it work? Thanks in advance if you can guide something on that...

gitea-mirror commented

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

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@waydabber commented on GitHub (Apr 3, 2023):

Sorry @dzirtusss, you'll need to start digging yourself with this, the method is not open sourced for now. But the fact that I was able to figure it out in a day shows the task is certainly not impossible! :) If you figure it out, feel free to add a PR to MonitorControl!

@waydabber commented on GitHub (Apr 3, 2023): Sorry @dzirtusss, you'll need to start digging yourself with this, the method is not open sourced for now. But the fact that I was able to figure it out in a day shows the task is certainly not impossible! :) If you figure it out, feel free to add a PR to MonitorControl!

gitea-mirror commented

2026-05-05 06:36:39 -06:00

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@waydabber commented on GitHub (Oct 18, 2023):

I closed this as it was implemented in BetterDisplay. MonitorControl's feature set is now considered final by the team, but if a PR relevant to this comes along, it will be accepted of course.

@waydabber commented on GitHub (Oct 18, 2023): I closed this as it was implemented in BetterDisplay. MonitorControl's feature set is now considered final by the team, but if a PR relevant to this comes along, it will be accepted of course.

gitea-mirror referenced this issue

2026-05-05 07:07:15 -06:00

[PR #737] [MERGED] Translation of "avoid gamma table manipulation" #1194