[GH-ISSUE #818] INNOCN 27C1U Adjusting the sound of the monitor does not work #521

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opened 2026-05-05 06:10:41 -06:00 by gitea-mirror · 1 comment

gitea-mirror commented

2026-05-05 06:10:41 -06:00

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Originally created by @caifenglin on GitHub (Nov 30, 2021).
Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/818

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

On my joint innovation display, the sound does not work, and the brightness can be successfully adjusted to display joint innovation 27c1u，ddcctl is used to adjust the sound without error, but it has no effect

Expected behavior

I hope it can support adjusting the sound of the monitor，Display parameter link https://item.jd.com/100013814761.html，I hope the sound adjustment function can be repaired. Thank you very much

Anything else?

No response

Environment Information (please complete the following information)

- macOS version:10.15.7
- Mac model:
- MonitorControl version:4.0.2
- Monitor(s):27C1U
- Monitor Cable(s)/Connection(s): Display Port
- Apple Silicon/M1 (yes or no):no

Originally created by @caifenglin on GitHub (Nov 30, 2021). Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/818 ### 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 On my joint innovation display, the sound does not work, and the brightness can be successfully adjusted to display joint innovation 27c1u，ddcctl is used to adjust the sound without error, but it has no effect ### Expected behavior I hope it can support adjusting the sound of the monitor，Display parameter link https://item.jd.com/100013814761.html，I hope the sound adjustment function can be repaired. Thank you very much ### Anything else? _No response_ ### Environment Information (please complete the following information) ```markdown - macOS version:10.15.7 - Mac model: - MonitorControl version:4.0.2 - Monitor(s):27C1U - Monitor Cable(s)/Connection(s): Display Port - Apple Silicon/M1 (yes or no):no ```

gitea-mirror

2026-05-05 06:10:41 -06:00

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gitea-mirror commented

2026-05-05 06:10:46 -06:00

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@waydabber commented on GitHub (Nov 30, 2021):

Hi @caifenglin - I am afraid this is a display specific issue. I advise you to try changing the volume via alternate apps that use DDC for control, like ddcctl or Lunar (@alin23). If neither of the works then the display is probably incompatible with the DDC command that adjusts the volume and there is nothing we can do about it I am afraid. :(

I'll convert this into a discussion so that others with similar displays might join and share their experience.

@waydabber commented on GitHub (Nov 30, 2021): Hi @caifenglin - I am afraid this is a display specific issue. I advise you to try changing the volume via alternate apps that use DDC for control, like [ddcctl](https://github.com/kfix/ddcctl) or [Lunar](https://lunar.fyi) (@alin23). If neither of the works then the display is probably incompatible with the DDC command that adjusts the volume and there is nothing we can do about it I am afraid. :( I'll convert this into a discussion so that others with similar displays might join and share their experience.

gitea-mirror referenced this issue

2026-05-05 07:04:51 -06:00

[PR #521] [MERGED] Update OpenCollective link #1109