[GH-ISSUE #493] Clicking point on slider does not change brightness #388

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opened 2026-05-05 05:53:42 -06:00 by gitea-mirror · 1 comment

gitea-mirror commented

2026-05-05 05:53:42 -06:00

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Originally created by @jacobgelling on GitHub (Jul 31, 2021).
Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/493

Checklist

I have searched for existing issues
I have looked through the wiki
I have updated MonitorControl to the latest version

Describe the bug
You cannot change the brightness by clicking a point on the slider - it visually changes position but the brightness does not change.

The brightness of the monitor only changes when you click and drag the slider.

To Reproduce

Click on the MonitorControl menu bar icon
Click on a point on the brightness slider
See the brightness of the monitor has not changed

Expected behavior
The brightness of the monitor should be adjusted.

Screenshots

So clicking where the red arrow is pointing changes the position of the slider dot, but does not change the brightness of the monitor. Only when clicking and sliding does the monitor brightness change.

Environment Information (please complete the following information):

macOS version: 11.5.1
Mac model: MacBook Pro (13-inch, 2020)
MonitorControl version: 2.2.0 (Build 947)
Monitor(s): Dell U2721DE
Apple Silicon/M1 (yes or no): no

Originally created by @jacobgelling on GitHub (Jul 31, 2021). Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/493 **Checklist**   - [x] I have searched for existing issues - [x] I have looked through [the wiki](https://github.com/MonitorControl/MonitorControl/wiki) - [x] I have updated MonitorControl to the latest version **Describe the bug** You cannot change the brightness by clicking a point on the slider - it visually changes position but the brightness does not change. The brightness of the monitor only changes when you click and drag the slider. **To Reproduce** 1. Click on the MonitorControl menu bar icon 2. Click on a point on the brightness slider 3. See the brightness of the monitor has not changed **Expected behavior** The brightness of the monitor should be adjusted. **Screenshots** ![Screenshot 2021-07-31 at 19 08 13](https://user-images.githubusercontent.com/3254275/127747397-3e268280-f2e5-4e6c-88a0-7909dbaffdab.png) So clicking where the red arrow is pointing changes the position of the slider dot, but does not change the brightness of the monitor. Only when clicking and sliding does the monitor brightness change. **Environment Information (please complete the following information):** - macOS version: 11.5.1 - Mac model: MacBook Pro (13-inch, 2020) - MonitorControl version: 2.2.0 (Build 947) - Monitor(s): Dell U2721DE - Apple Silicon/M1 (yes or no): no

gitea-mirror

2026-05-05 05:53:42 -06:00

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gitea-mirror commented

2026-05-05 05:53:48 -06:00

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@JoniVR commented on GitHub (Aug 2, 2021):

This is related to #478, basically, there's an issue right now where ddc commands on Intel will only succeed when spammed a few times, which is why it's working while sliding but not when clicking (sending multiple times vs only once)

(but thanks for opening the issue anyways 🙂)

Revert to 2.1.0 and it should work.

@JoniVR commented on GitHub (Aug 2, 2021): This is related to #478, basically, there's an issue right now where ddc commands on Intel will only succeed when spammed a few times, which is why it's working while sliding but not when clicking (sending multiple times vs only once) (but thanks for opening the issue anyways 🙂) Revert to 2.1.0 and it should work.