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[GH-ISSUE #568] Option to 'Reapply last set brightness upon startup or wake' #424

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opened 2026-05-05 05:58:44 -06:00 by gitea-mirror · 4 comments

gitea-mirror commented

2026-05-05 05:58:44 -06:00

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Originally created by @tsengwaiyong on GitHub (Sep 6, 2021).
Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/568

Originally assigned to: @waydabber on GitHub.

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

brightness don't take effect when mac wakes up in sleep or launch the MonitorControl

Steps to reproduce

1.Set the monitor brightness to 100%

2.Launch the MonitorControl , set the brightness at about 20%,the brightness is getting lower

3.Let mac enters sleep mode or restart

4.Wake up the mac

5.The monitor brightness will change back to 100% like i never launch the MonitorControl

Expected behavior

The monitor brightness is take effect when mac wake up or launch MonitorControl

Anything else?

No response

Environment Information (please complete the following information)

- macOS version:11.4 Big Sur
- Mac model:Mac mini M1
- MonitorControl version:3.0.0 Build 3095
- Monitor(s):Philips 288E2
- Apple Silicon/M1 (yes or no): yes

Originally created by @tsengwaiyong on GitHub (Sep 6, 2021). Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/568 Originally assigned to: @waydabber on GitHub. ### 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 brightness don't take effect when mac wakes up in sleep or launch the MonitorControl ### Steps to reproduce 1.Set the monitor brightness to 100% ![831630938722_ pic](https://user-images.githubusercontent.com/53459541/132232489-17483255-6cfd-421e-854e-b7cf40ab3335.jpg) 2.Launch the MonitorControl , set the brightness at about 20%,the brightness is getting lower ![image](https://user-images.githubusercontent.com/53459541/132232548-2d049e56-eac6-4aca-aacb-982a7a52bbdb.png) 3.Let mac enters sleep mode or restart ![image](https://user-images.githubusercontent.com/53459541/132232841-c5289053-0bdd-46c6-96d2-2cf0b4a2b775.png) 4.Wake up the mac 5.The monitor brightness will change back to 100% like i never launch the MonitorControl ### Expected behavior The monitor brightness is take effect when mac wake up or launch MonitorControl ### Anything else? _No response_ ### Environment Information (please complete the following information) ```markdown - macOS version:11.4 Big Sur - Mac model:Mac mini M1 - MonitorControl version:3.0.0 Build 3095 - Monitor(s):Philips 288E2 - Apple Silicon/M1 (yes or no): yes ```

gitea-mirror

2026-05-05 05:58:44 -06:00

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gitea-mirror commented

2026-05-05 05:58:48 -06:00

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@waydabber commented on GitHub (Sep 6, 2021):

Hey @tsengwaiyong - this seems to be a display issue. It is rather rare but some displays don't store brightness set via DDC and after sleep they resume at 100% or the previously set OSD value. MonitorControl currently does not try to re-set the value after sleep but expects the display to retain the last setting.

I convert this issue to a Feature Request, it might be beneficial to have an option for this "Restore last set brightness upon startup or after sleep".

@waydabber commented on GitHub (Sep 6, 2021): Hey @tsengwaiyong - this seems to be a display issue. It is rather rare but some displays don't store brightness set via DDC and after sleep they resume at 100% or the previously set OSD value. MonitorControl currently does not try to re-set the value after sleep but expects the display to retain the last setting. I convert this issue to a Feature Request, it might be beneficial to have an option for this "Restore last set brightness upon startup or after sleep".

gitea-mirror commented

2026-05-05 05:58:51 -06:00

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@tsengwaiyong commented on GitHub (Sep 7, 2021):

@waydabber OK，thanks

@tsengwaiyong commented on GitHub (Sep 7, 2021): @waydabber OK，thanks

gitea-mirror commented

2026-05-05 05:58:54 -06:00

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@waydabber commented on GitHub (Sep 9, 2021):

See screenshots of the implementation in the v3.1.0 preliminary discussion.

@waydabber commented on GitHub (Sep 9, 2021): See screenshots of the implementation in the [v3.1.0 preliminary discussion](https://github.com/MonitorControl/MonitorControl/discussions/596).

gitea-mirror commented

2026-05-05 05:58:57 -06:00

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@tsengwaiyong commented on GitHub (Sep 13, 2021):

😄thank you for solving this issue, I will try it in the next update

@tsengwaiyong commented on GitHub (Sep 13, 2021): 😄thank you for solving this issue, I will try it in the next update