[GH-ISSUE #1051] Apple LED Cinema Display and Macbook air M1 brightness reduced after installing MonitorControl #629

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opened 2026-05-05 06:24:26 -06:00 by gitea-mirror · 1 comment

gitea-mirror commented

2026-05-05 06:24:26 -06:00

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Originally created by @galgi-droid on GitHub (May 29, 2022).
Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1051

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

After installing MonitorControl on Macbook air M1 connected to Apple LED Cinema Display the brightness of monitor decreased about 50% and iI can't increase it nor keyboard nor Control Center.

Expected behavior

How to return the brightness of monitor back?

Anything else?

No response

Environment Information (please complete the following information)

- macOS version: 12.4 Monterey
- Mac model: Macbook Air M1
- MonitorControl version: 4.1.0. Build 7034
- Monitor(s): Apple Cinema Display
- Monitor Cable(s)/Connection(s): USB type C
- Apple Silicon/M1 (yes or no): yes

Originally created by @galgi-droid on GitHub (May 29, 2022). Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1051 ### 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 After installing MonitorControl on Macbook air M1 connected to Apple LED Cinema Display the brightness of monitor decreased about 50% and iI can't increase it nor keyboard nor Control Center. ### Expected behavior How to return the brightness of monitor back? ### Anything else? _No response_ ### Environment Information (please complete the following information) ```markdown - macOS version: 12.4 Monterey - Mac model: Macbook Air M1 - MonitorControl version: 4.1.0. Build 7034 - Monitor(s): Apple Cinema Display - Monitor Cable(s)/Connection(s): USB type C - Apple Silicon/M1 (yes or no): yes ```

gitea-mirror closed this issue

2026-05-05 06:24:28 -06:00

gitea-mirror commented

2026-05-05 06:24:31 -06:00

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@the0neyouseek commented on GitHub (May 29, 2022):

Hi @galgi-droid
Please have a look at these discussions for these issue https://github.com/MonitorControl/MonitorControl/discussions/739 & https://github.com/MonitorControl/MonitorControl/discussions/970

@the0neyouseek commented on GitHub (May 29, 2022): Hi @galgi-droid Please have a look at these discussions for these issue https://github.com/MonitorControl/MonitorControl/discussions/739 & https://github.com/MonitorControl/MonitorControl/discussions/970

gitea-mirror referenced this issue

2026-05-05 07:05:44 -06:00

[PR #629] [MERGED] Version 4.0.0 #1138