[GH-ISSUE #1147] Screen Flash when adjust the Volume via Monitorcontrol via HDMI #677

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opened 2026-05-05 06:29:13 -06:00 by gitea-mirror · 1 comment

gitea-mirror commented

2026-05-05 06:29:13 -06:00

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Originally created by @cyfirst007 on GitHub (Aug 26, 2022).
Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1147

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

Volume control is not working properly on my new monitor LG Ergo 27UN880 monitor. When I adjust the volume via Monitorcontrol, the monitor screen will flash (turn off and turn on) one second and come back to normal.

Steps to reproduce

adjust volume via Keyboard or scroll the bar in MonitorControl
Screen flash 1 second and Volume adjusted

Expected behavior

Screen not flash when adjust the volume via MonitorControl

Anything else?

No response

Environment Information (please complete the following information)

- macOS version: 12.5.1
- Mac model: Mac mini 2018
- MonitorControl version: 4.1.0
- Monitor(s): LG Ergo UN880
- Monitor Cable(s)/Connection(s): HDMI 2.0
- Apple Silicon/M1 (yes or no): No

Originally created by @cyfirst007 on GitHub (Aug 26, 2022). Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/1147 ### 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 Volume control is not working properly on my new monitor LG Ergo 27UN880 monitor. When I adjust the volume via Monitorcontrol, the monitor screen will flash (turn off and turn on) one second and come back to normal. ### Steps to reproduce 1. adjust volume via Keyboard or scroll the bar in MonitorControl 2. Screen flash 1 second and Volume adjusted ### Expected behavior Screen not flash when adjust the volume via MonitorControl ### Anything else? _No response_ ### Environment Information (please complete the following information) ```markdown - macOS version: 12.5.1 - Mac model: Mac mini 2018 - MonitorControl version: 4.1.0 - Monitor(s): LG Ergo UN880 - Monitor Cable(s)/Connection(s): HDMI 2.0 - Apple Silicon/M1 (yes or no): No ```

gitea-mirror closed this issue

2026-05-05 06:29:15 -06:00

gitea-mirror commented

2026-05-05 06:29:20 -06:00

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Owner

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

You should use USB-C to connect the display. The HDMI port of the 2018 (or later) Minis mess up DDC communication. I think brightness control does not work either (only the bottom 50% which is software based, not DDC).

@waydabber commented on GitHub (Aug 26, 2022): You should use USB-C to connect the display. The HDMI port of the 2018 (or later) Minis mess up DDC communication. I think brightness control does not work either (only the bottom 50% which is software based, not DDC).

gitea-mirror referenced this issue

2026-05-05 07:06:35 -06:00

[PR #677] [MERGED] Update InternetAccessPolicy.strings #1166