[GH-ISSUE #405] LG 27MP89HM #324

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opened 2026-05-05 05:44:49 -06:00 by gitea-mirror · 4 comments

gitea-mirror commented

2026-05-05 05:44:49 -06:00

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Originally created by @ManuISEN on GitHub (Mar 13, 2021).
Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/405

Originally assigned to: @waydabber on GitHub.

Hello,

I would like to thank you first for your amazing work.

Checklist

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

Describe the issue
I'm not able to change either volume nor brightness.

Expected behavior
As you can see on its specification page my monitor is capable of DDC (tried ddcctl as suggested on the wiki page but didn't work too).

Screenshots

Environment Information:

macOS version: Big Sur 11.2.3
MonitorControl version: 2.1.0
Monitor(s): LG 27MP89HM-S
Mac model: Mac mini (2018)
Monitor Cable(s)/Connection(s): HDMI

Originally created by @ManuISEN on GitHub (Mar 13, 2021). Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/405 Originally assigned to: @waydabber on GitHub. Hello, I would like to thank you first for your amazing work. **Checklist** - [x] I have searched for existing issues - [x] I have looked through [the Monitor Troubleshooting wiki](https://github.com/MonitorControl/MonitorControl/wiki/Monitor-Troubleshooting) - [x] I have updated MonitorControl to the latest version **Describe the issue** I'm not able to change either volume nor brightness. **Expected behavior** As you can see on [its specification page](https://www.lg.com/uk/monitors/lg-27MP89HM) my monitor is capable of DDC (tried [ddcctl](https://github.com/kfix/ddcctl) as suggested on the [wiki page](https://github.com/MonitorControl/MonitorControl/wiki/Monitor-Troubleshooting) but didn't work too). **Screenshots** ![image](https://user-images.githubusercontent.com/22475882/111026480-c1af2900-83ea-11eb-8464-10714b30573b.png) **Environment Information:** - macOS version: Big Sur 11.2.3 - MonitorControl version: 2.1.0 - Monitor(s): LG 27MP89HM-S - Mac model: Mac mini (2018) - Monitor Cable(s)/Connection(s): HDMI

gitea-mirror

2026-05-05 05:44:49 -06:00

closed this issue
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gitea-mirror commented

2026-05-05 05:44:56 -06:00

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@ManuISEN commented on GitHub (Jul 31, 2021):

@ManuISEN commented on GitHub (Jul 31, 2021): up

gitea-mirror commented

2026-05-05 05:44:58 -06:00

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@waydabber commented on GitHub (Aug 21, 2021):

Hi @ManuISEN - as I see you are using a 2018 Mac Mini via HDMI. Unfortunatelly 2018 Mac Minis and 2020 M1 Minis block DDC communication via HDMI. You'll need a cable that uses USB-C on these devices. Sorry to say, but there is no known workaround for that at the moment unfortunatelly, that's why ddctl does not work either. :(

I'll close this issue but let me know if I can be of any help! Thanks!

@waydabber commented on GitHub (Aug 21, 2021): Hi @ManuISEN - as I see you are using a 2018 Mac Mini via HDMI. Unfortunatelly 2018 Mac Minis and 2020 M1 Minis block DDC communication via HDMI. You'll need a cable that uses USB-C on these devices. Sorry to say, but there is no known workaround for that at the moment unfortunatelly, that's why ddctl does not work either. :( I'll close this issue but let me know if I can be of any help! Thanks!

gitea-mirror commented

2026-05-05 05:45:00 -06:00

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Owner

@ManuISEN commented on GitHub (Oct 15, 2021):

Hi @waydabber
Just a little feedback:
I used a USB-C to HDMI cable like this one
And it works like a charm :)
Thank you!

@ManuISEN commented on GitHub (Oct 15, 2021): Hi @waydabber Just a little feedback: I used a USB-C to HDMI cable like [this one](https://www.amazon.co.uk/Thunderbolt-Compatible-Support-Telecommuting-MacBook/dp/B083Z8QBJ5/ref=sr_1_4?dchild=1&keywords=hdmi+usb+c+uni&qid=1634291360&sr=8-4) And it works like a charm :) Thank you!

gitea-mirror commented

2026-05-05 05:45:01 -06:00

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Owner

@waydabber commented on GitHub (Oct 15, 2021):

Great! :)

@waydabber commented on GitHub (Oct 15, 2021): Great! :)