[GH-ISSUE #1116] Dell S2722QC - brightness slider position and actual monitor brightness do not match #660

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opened 2026-05-05 06:27:38 -06:00 by gitea-mirror · 1 comment

gitea-mirror commented

2026-05-05 06:27:38 -06:00

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Originally created by @stormbringer83 on GitHub (Jul 20, 2022).
Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1116

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

Volume control works, but volume slider position in the menu bar is not updated when I change volume level on the monitor itself using physical buttons. E.g.: volume slider set to 0, monitor volume set to 0. I set volume using monitor buttons to 50% - slider remains at 0.
Same problem with brightness: brightness slider position is not updated when I change brightness level on the monitor itself using physical buttons.
Brightness slider position and actual monitor brightness do not match. Any slider position between 0 and 50% corresponds to monitor brightness 0; slider position 50% corresponds to monitor brightness 0; slider position 75% corresponds to monitor brightness 50%; slider position 100% corresponds to monitor brightness 100%.

Expected behavior

Volume and brightness sliders position in the menu bar are updated when volume & brightness are changed on the monitor using physical buttons.
Brightness slider position in the menu bar matches actual monitor brightness, i.e. left position is 0% brightness, right position is 100% actual monitor brightness.

Anything else?

No response

Environment Information (please complete the following information)

- macOS version: 12.4
- Mac model: MacBook Air (M1, 2020)
- MonitorControl version: 4.1.0 Build 7034
- Monitor(s): Dell S2722QC
- Monitor Cable(s)/Connection(s): USB-C
- Apple Silicon/M1 (yes or no): yes

Originally created by @stormbringer83 on GitHub (Jul 20, 2022). Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1116 ### 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 1. Volume control works, but volume slider position in the menu bar is not updated when I change volume level on the monitor itself using physical buttons. E.g.: volume slider set to 0, monitor volume set to 0. I set volume using monitor buttons to 50% - slider remains at 0. 2. Same problem with brightness: brightness slider position is not updated when I change brightness level on the monitor itself using physical buttons. 3. Brightness slider position and actual monitor brightness do not match. Any slider position between 0 and 50% corresponds to monitor brightness 0; slider position 50% corresponds to monitor brightness 0; slider position 75% corresponds to monitor brightness 50%; slider position 100% corresponds to monitor brightness 100%. ### Expected behavior 1. Volume and brightness sliders position in the menu bar are updated when volume & brightness are changed on the monitor using physical buttons. 2. Brightness slider position in the menu bar matches actual monitor brightness, i.e. left position is 0% brightness, right position is 100% actual monitor brightness. ### Anything else? _No response_ ### Environment Information (please complete the following information) ```markdown - macOS version: 12.4 - Mac model: MacBook Air (M1, 2020) - MonitorControl version: 4.1.0 Build 7034 - Monitor(s): Dell S2722QC - Monitor Cable(s)/Connection(s): USB-C - Apple Silicon/M1 (yes or no): yes ```

gitea-mirror closed this issue

2026-05-05 06:27:39 -06:00

gitea-mirror commented

2026-05-05 06:27:43 -06:00

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@waydabber commented on GitHub (Jul 26, 2022):

Hi there, this is all normal and expected. The app does not continuously poll the display settings via DDC (that would wreak havoc with many displays). You can set up the app to at least read settings on startup or after sleep but that is disabled by default since many displays are not compatible with this.

Brigtness 0-50% is software dimming and 50-100% is hardware (DDC) backlight control by default. You can change this in settings or adjust the transition point in Advanced Settings under Displays.

@waydabber commented on GitHub (Jul 26, 2022): Hi there, this is all normal and expected. The app does not continuously poll the display settings via DDC (that would wreak havoc with many displays). You can set up the app to at least read settings on startup or after sleep but that is disabled by default since many displays are not compatible with this. Brigtness 0-50% is software dimming and 50-100% is hardware (DDC) backlight control by default. You can change this in settings or adjust the transition point in Advanced Settings under Displays.

gitea-mirror referenced this issue

2026-05-05 07:06:19 -06:00

[PR #660] [MERGED] Make the translation (Traditional Chinese, Taiwan) more concise and easier to read. #1157