[GH-ISSUE #1422] Apple LED Cinema Display - Lower brightness after install, cannot increase #807

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opened 2026-05-05 06:43:50 -06:00 by gitea-mirror · 1 comment

gitea-mirror commented

2026-05-05 06:43:50 -06:00

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Originally created by @BoomerangThree on GitHub (Sep 8, 2023).
Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1422

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 initial install my MacMini M1 associated with an Apple LED Cinema Display, the brightness lowered and now it won't increase to the brightness it was before the install. MonitorControl appears to be working correctly, brightness is set to 100%, but it's still a lower brightness as compared to before the install of MonitorControl.

Monitor is old, might be that I just need to upgrade the monitor, but wanted to check to see if this is a known issue.

Thanks for the support.

Expected behavior

Monitor via MonitorControl would be as bright as before the insttall.

Anything else?

No response

Environment Information (please complete the following information)

- macOS version:  Sonoma 14.0
- Mac model:  MacMini M1
- MonitorControl version:  4.1.0
- Monitor(s):  Apple LED Cinema Display
- Monitor Cable(s)/Connection(s):  USB-C to HDMI
- Apple Silicon/M1 (yes or no):  Yes

Originally created by @BoomerangThree on GitHub (Sep 8, 2023). Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1422 ### 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 initial install my MacMini M1 associated with an Apple LED Cinema Display, the brightness lowered and now it won't increase to the brightness it was before the install. MonitorControl appears to be working correctly, brightness is set to 100%, but it's still a lower brightness as compared to before the install of MonitorControl. Monitor is old, might be that I just need to upgrade the monitor, but wanted to check to see if this is a known issue. Thanks for the support. ### Expected behavior Monitor via MonitorControl would be as bright as before the insttall. ### Anything else? _No response_ ### Environment Information (please complete the following information) ```markdown - macOS version: Sonoma 14.0 - Mac model: MacMini M1 - MonitorControl version: 4.1.0 - Monitor(s): Apple LED Cinema Display - Monitor Cable(s)/Connection(s): USB-C to HDMI - Apple Silicon/M1 (yes or no): Yes ```