[GH-ISSUE #1177] Volume control broken after macOS 12.6 upgrade? #682

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opened 2026-05-05 06:30:02 -06:00 by gitea-mirror · 4 comments

gitea-mirror commented

2026-05-05 06:30:02 -06:00

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Originally created by @dtsimon on GitHub (Sep 13, 2022).
Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1177

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

After the upgrade to macOS 12.6, MC seems to have stopped controlling volume on my Dell U3818DW (latest firmware M3B106). Everything was working fine until today.

Steps to reproduce

Try to adjust volume.
Volume OSD appears and scales as it should.
Volume can be muted for Spotify, but not for, e.g., sending mail in Mail.app

Expected behavior

MC should control the volume in all apps and services.

Anything else?

No response

Environment Information (please complete the following information)

- macOS version: 12.6
- Mac model: MacBook Pro (13-inch, 2019, Four Thunderbolt 3 ports)
- MonitorControl version: v4.1.0
- Monitor(s): Dell U3818DW
- Apple Silicon/M1 (yes or no): no

Originally created by @dtsimon on GitHub (Sep 13, 2022). Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1177 ### 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 After the upgrade to macOS 12.6, MC seems to have stopped controlling volume on my Dell U3818DW (latest firmware M3B106). Everything was working fine until today. ### Steps to reproduce 1. Try to adjust volume. 2. Volume OSD appears and scales as it should. 3. Volume can be muted for Spotify, but not for, e.g., sending mail in Mail.app ### Expected behavior MC should control the volume in all apps and services. ### Anything else? _No response_ ### Environment Information (please complete the following information) ```markdown - macOS version: 12.6 - Mac model: MacBook Pro (13-inch, 2019, Four Thunderbolt 3 ports) - MonitorControl version: v4.1.0 - Monitor(s): Dell U3818DW - Apple Silicon/M1 (yes or no): no ```

gitea-mirror closed this issue

2026-05-05 06:30:04 -06:00

gitea-mirror commented

2026-05-05 06:30:08 -06:00

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@bkosse commented on GitHub (Sep 14, 2022):

same here

macOS version: 12.6
Mac model: MacBook Pro (14-inch, 2021)
MonitorControl version: v4.1.0
Monitor(s): LG ULTRAWIDE
Apple Silicon/M1: yes

@bkosse commented on GitHub (Sep 14, 2022): same here - macOS version: 12.6 - Mac model: MacBook Pro (14-inch, 2021) - MonitorControl version: v4.1.0 - Monitor(s): LG ULTRAWIDE - Apple Silicon/M1: yes

gitea-mirror commented

2026-05-05 06:30:10 -06:00

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@the0neyouseek commented on GitHub (Sep 14, 2022):

Hi @dtsimon @bkosse
Checking your monitor osd, does volume change at all and are you using and HDMI or an Usb-c cable ?

@the0neyouseek commented on GitHub (Sep 14, 2022): Hi @dtsimon @bkosse Checking your monitor osd, does volume change at all and are you using and HDMI or an Usb-c cable ?

gitea-mirror commented

2026-05-05 06:30:11 -06:00

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@bkosse commented on GitHub (Sep 14, 2022):

Volume does not change at all.
I'm using HDMI.

@bkosse commented on GitHub (Sep 14, 2022): Volume does not change at all. I'm using HDMI.

gitea-mirror commented

2026-05-05 06:30:13 -06:00

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@the0neyouseek commented on GitHub (Sep 14, 2022):

Volume does not change at all.
I'm using HDMI.

On M1/M2 macs HDMI does not allow for DDC (hardware) control (Apple's fault and sadly nothing we can do here) so this is expected behavior. You can try to use an usb-c cable if you want volume control. Beware that a lot of monitor does not support it even if they support DDC control

@the0neyouseek commented on GitHub (Sep 14, 2022): > Volume does not change at all. > I'm using HDMI. On M1/M2 macs HDMI does not allow for DDC (hardware) control (Apple's fault and sadly nothing we can do here) so this is expected behavior. You can try to use an usb-c cable if you want volume control. Beware that a lot of monitor does not support it even if they support DDC control