[GH-ISSUE #1248] Volume control on an AOC U27N3C #722

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opened 2026-05-05 06:35:06 -06:00 by gitea-mirror · 1 comment

gitea-mirror commented

2026-05-05 06:35:06 -06:00

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Originally created by @lzr1130 on GitHub (Dec 10, 2022).
Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1248

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

When I turn the volume down to minimum, the monitor is still very loud.
My monitor which is an AOC U27N3C can not control the volume by hardware.

Steps to reproduce

When I connect the Mac to an AOC U27N2C and turn the volume down to minimum. The monitor still speaks very loud.
When I continue to turn the volume louder, the voice changes very slowly.

Expected behavior

When I turn the volume down to minimum, the monitor's voice should be very small.

Anything else?

No response

Environment Information (please complete the following information)

- macOS version: Ventura 13.0.1
- Mac model: MacBook Pro (13-inch, M1, 2020)
- MonitorControl version: 4.1.0
- Monitor(s): AOC U37N3C
- Apple Silicon/M1 (yes or no): yes

Originally created by @lzr1130 on GitHub (Dec 10, 2022). Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1248 ### 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 When I turn the volume down to minimum, the monitor is still very loud. My monitor which is an AOC U27N3C can not control the volume by hardware. ### Steps to reproduce When I connect the Mac to an AOC U27N2C and turn the volume down to minimum. The monitor still speaks very loud. When I continue to turn the volume louder, the voice changes very slowly. ### Expected behavior When I turn the volume down to minimum, the monitor's voice should be very small. ### Anything else? _No response_ ### Environment Information (please complete the following information) ```markdown - macOS version: Ventura 13.0.1 - Mac model: MacBook Pro (13-inch, M1, 2020) - MonitorControl version: 4.1.0 - Monitor(s): AOC U37N3C - Apple Silicon/M1 (yes or no): yes ```

gitea-mirror closed this issue

2026-05-05 06:35:09 -06:00

gitea-mirror commented

2026-05-05 06:35:12 -06:00

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Owner

@waydabber commented on GitHub (Jan 11, 2023):

This seems to be a monitor specific issue. Sadly not all display support DDC volume control properly. There is nothing much we can do about it, the display maker should address this problem with a firmware update (but they usually never do + such a thing, as most display does not have user upgradeable firmware). Sorry about this. :(

@waydabber commented on GitHub (Jan 11, 2023): This seems to be a monitor specific issue. Sadly not all display support DDC volume control properly. There is nothing much we can do about it, the display maker should address this problem with a firmware update (but they usually never do + such a thing, as most display does not have user upgradeable firmware). Sorry about this. :(