[GH-ISSUE #1378] Apple Cinema Display - half as bright as it should be #786

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opened 2026-05-05 06:41:58 -06:00 by gitea-mirror · 2 comments

gitea-mirror commented

2026-05-05 06:41:58 -06:00

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Originally created by @skaman82 on GitHub (May 26, 2023).
Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1378

Before opening the issue, have you...?

Searched for existing issues
Looked through the wiki
Updated MonitorControl to the latest version (if applicable)

Describe the bug

My cinema display is about at 50% brightness on the max setting from the app on my M1 max MacBook (Ventura). I am only able to restore the full brightness by reconnecting the display to my old Mac pro and adjust it to correct brightness.

Steps to reproduce

See above

Expected behavior

Display should reach its max brightness when the app slider is set to 100%

Anything else?

No response

Environment Information (please complete the following information)

- macOS version: Ventura 
- Mac model: Mac book pro (M1 max)
- MonitorControl version: latest release version 
- Monitor(s): Apple Cinema Display 27"
- Apple Silicon/M1 (yes or no): yes

Originally created by @skaman82 on GitHub (May 26, 2023). Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1378 ### Before opening the issue, have you...? - [X] Searched for existing issues - [X] Looked through [the wiki](https://github.com/MonitorControl/MonitorControl/wiki) - [X] Updated MonitorControl to the latest version (if applicable) ### Describe the bug My cinema display is about at 50% brightness on the max setting from the app on my M1 max MacBook (Ventura). I am only able to restore the full brightness by reconnecting the display to my old Mac pro and adjust it to correct brightness. ### Steps to reproduce See above ### Expected behavior Display should reach its max brightness when the app slider is set to 100% ### Anything else? _No response_ ### Environment Information (please complete the following information) ```markdown - macOS version: Ventura - Mac model: Mac book pro (M1 max) - MonitorControl version: latest release version - Monitor(s): Apple Cinema Display 27" - Apple Silicon/M1 (yes or no): yes ```

gitea-mirror closed this issue

2026-05-05 06:42:00 -06:00

gitea-mirror commented

2026-05-05 06:42:03 -06:00

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@Draeconis commented on GitHub (May 27, 2023):

Under Preferences > Displays, enable 'Show advanced settings'.

Under your LED Cinema Display entry ensure that Brightness control is enabled, and set DDC max to '1023'.

@Draeconis commented on GitHub (May 27, 2023): Under Preferences > Displays, enable 'Show advanced settings'. Under your LED Cinema Display entry ensure that Brightness control is enabled, and set DDC max to '1023'.

gitea-mirror commented

2026-05-05 06:42:04 -06:00

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@waydabber commented on GitHub (May 31, 2023):

Exactly!

@waydabber commented on GitHub (May 31, 2023): Exactly!

gitea-mirror referenced this issue

2026-05-05 07:07:35 -06:00

[PR #786] [MERGED] Some minor fixes and improvements #1204