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[GH-ISSUE #1028] Max brightness being set constantly once app starts. #618

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opened 2026-05-05 06:22:47 -06:00 by gitea-mirror · 6 comments

gitea-mirror commented

2026-05-05 06:22:47 -06:00

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Originally created by @Gabriel-Sa on GitHub (May 6, 2022).
Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1028

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

On my M1 Max MacBook Pro the brightness for the screen is being set to max automatically. The OSD for brightness stays on. The only solution is to unplug and replug in the monitor. Even restarting the computer causes the bug to persist. Not sure if this is an issue with Apple's display drivers or with the app itself.

Steps to reproduce

I'll update with the direct steps required to reproduce. Right now it seems that it happens if the laptop has been plugged in over night.

Expected behavior

The app should adjust the brightness as usual. However the app continues to display the brightness OSD even when no brightness function keys are being pressed.

Anything else?

No response

Environment Information (please complete the following information)

- macOS version: 12.3.1
- Mac model: MacbookPro18, 2 (16-inch, 2021) 
- MonitorControl version: 4.0.2 Build 6965
- Monitor(s): LG HDR 5K
- Apple Silicon/M1 (yes or no): yes

Originally created by @Gabriel-Sa on GitHub (May 6, 2022). Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1028 ### 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 On my M1 Max MacBook Pro the brightness for the screen is being set to max automatically. The OSD for brightness stays on. The only solution is to unplug and replug in the monitor. Even restarting the computer causes the bug to persist. Not sure if this is an issue with Apple's display drivers or with the app itself. ### Steps to reproduce I'll update with the direct steps required to reproduce. Right now it seems that it happens if the laptop has been plugged in over night. ### Expected behavior The app should adjust the brightness as usual. However the app continues to display the brightness OSD even when no brightness function keys are being pressed. ### Anything else? _No response_ ### Environment Information (please complete the following information) ```markdown - macOS version: 12.3.1 - Mac model: MacbookPro18, 2 (16-inch, 2021) - MonitorControl version: 4.0.2 Build 6965 - Monitor(s): LG HDR 5K - Apple Silicon/M1 (yes or no): yes ```

gitea-mirror

2026-05-05 06:22:47 -06:00

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gitea-mirror commented

2026-05-05 06:22:55 -06:00

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@Gabriel-Sa commented on GitHub (May 7, 2022):

Added below are some screenshots and a video demonstrating the bug.

The screen shot was taken using the keyboard, so I wasn't pressing any of the brightness buttons.
The video below contains me moving the slider (without pressing any buttons), then pressing the buttons.

https://user-images.githubusercontent.com/19657801/167229597-52b2d277-e301-4f5d-8d9e-cb34e01f847c.mov

@Gabriel-Sa commented on GitHub (May 7, 2022): Added below are some screenshots and a video demonstrating the bug. ![Screen_shot](https://user-images.githubusercontent.com/19657801/167229475-c5b8bb81-9d45-4de6-8062-3a78da85dba1.jpg) The screen shot was taken using the keyboard, so I wasn't pressing any of the brightness buttons. The video below contains me moving the slider (without pressing any buttons), then pressing the buttons. https://user-images.githubusercontent.com/19657801/167229597-52b2d277-e301-4f5d-8d9e-cb34e01f847c.mov

gitea-mirror commented

2026-05-05 06:22:58 -06:00

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@the0neyouseek commented on GitHub (May 7, 2022):

Hi @Gabriel-Sa !

That's a weird one! Do you perhaps have the "Sync brightness" option enabled ?

@the0neyouseek commented on GitHub (May 7, 2022): Hi @Gabriel-Sa ! That's a weird one! Do you perhaps have the "Sync brightness" option enabled ? ![image](https://user-images.githubusercontent.com/4009175/167243627-e32756c3-c558-422f-9267-f8437c5630cb.png)

gitea-mirror commented

2026-05-05 06:23:01 -06:00

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@Gabriel-Sa commented on GitHub (May 7, 2022):

Hi @Gabriel-Sa !

That's a weird one! Do you perhaps have the "Sync brightness" option enabled ?

Hi! Yep I made sure it was off. I keep my laptop in clamshell mode too.

@Gabriel-Sa commented on GitHub (May 7, 2022): > Hi @Gabriel-Sa ! > > > > That's a weird one! Do you perhaps have the "Sync brightness" option enabled ? > > ![image](https://user-images.githubusercontent.com/4009175/167243627-e32756c3-c558-422f-9267-f8437c5630cb.png) > > Hi! Yep I made sure it was off. I keep my laptop in clamshell mode too.

gitea-mirror commented

2026-05-05 06:23:03 -06:00

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@ltreme commented on GitHub (May 9, 2022):

I have the same problem, but instead of the brightness, the volume increases constantly after I start MonitorControl.

My specs are:

macos 12.3.1
mac model: Macbook Pro 16 (2019)
MonitorControl version: 4.0.2 Build 6965
Monitor: LG HDR 5K
Apple Silicon/M1: no

@ltreme commented on GitHub (May 9, 2022): I have the same problem, but instead of the brightness, the volume increases constantly after I start MonitorControl. My specs are: - macos 12.3.1 - mac model: Macbook Pro 16 (2019) - MonitorControl version: 4.0.2 Build 6965 - Monitor: LG HDR 5K - Apple Silicon/M1: no

gitea-mirror commented

2026-05-05 06:23:07 -06:00

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@Gabriel-Sa commented on GitHub (May 11, 2022):

Update, appears to be happening with the volume settings as well. Not sure if this is a Mac bug or a bug with the app.

@Gabriel-Sa commented on GitHub (May 11, 2022): Update, appears to be happening with the volume settings as well. Not sure if this is a Mac bug or a bug with the app.

gitea-mirror commented

2026-05-05 06:23:11 -06:00

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@stale[bot] commented on GitHub (Jan 12, 2024):

Hey there, it looks like there has been no activity on this issue recently. Has the issue been fixed, or does it still require attention? This issue may be closed if no further activity occurs. Thank you for your contributions.

@stale[bot] commented on GitHub (Jan 12, 2024): Hey there, it looks like there has been no activity on this issue recently. Has the issue been fixed, or does it still require attention? This issue may be closed if no further activity occurs. Thank you for your contributions.

gitea-mirror referenced this issue

2026-05-05 06:23:39 -06:00

[GH-ISSUE #1045] Can we have global volumes to all devices? Monitor Speakers + MacBook Speaker for example #622