[GH-ISSUE #1431] Why "Use hardware DCC control" is greyed out on iMac 27" Monterey and MBP 15" Big Sur? #808

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opened 2026-05-05 06:44:01 -06:00 by gitea-mirror · 1 comment

gitea-mirror commented

2026-05-05 06:44:01 -06:00

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Originally created by @bendoo on GitHub (Sep 14, 2023).
Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1431

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Question

I want to reset the DCC value of the "Use hardware DCC control" but this is greyed out on both iMac 27" Monterey and MBP 15" Big Sur.
I am using them with a 27" Thunderbold Cinema Display, can not change the max brightness settings.

Any idea what might be wrong?

Originally created by @bendoo on GitHub (Sep 14, 2023). Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1431 ### Before opening the issue, have you...? - [X] Searched for existing issues ### Question I want to reset the DCC value of the "Use hardware DCC control" but this is greyed out on both iMac 27" Monterey and MBP 15" Big Sur. I am using them with a 27" Thunderbold Cinema Display, can not change the max brightness settings. Any idea what might be wrong?