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[GH-ISSUE #426] Not support Dell U2720Q #341

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opened 2026-05-05 05:46:53 -06:00 by gitea-mirror · 8 comments

gitea-mirror commented

2026-05-05 05:46:53 -06:00

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Originally created by @asterism612 on GitHub (Apr 20, 2021).
Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/426

Unknown Display

Originally created by @asterism612 on GitHub (Apr 20, 2021). Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/426 Unknown Display

gitea-mirror

2026-05-05 05:46:53 -06:00

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gitea-mirror commented

2026-05-05 05:46:58 -06:00

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@maxsquared commented on GitHub (Apr 20, 2021):

Using the same display and it works fine for me.

@maxsquared commented on GitHub (Apr 20, 2021): Using the same display and it works fine for me.

gitea-mirror commented

2026-05-05 05:47:01 -06:00

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@terryeah commented on GitHub (Apr 22, 2021):

Can confirm Dell U2720Q shows Unknown Display

@terryeah commented on GitHub (Apr 22, 2021): Can confirm Dell U2720Q shows Unknown Display

gitea-mirror commented

2026-05-05 05:47:04 -06:00

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@chunheisiu commented on GitHub (Apr 22, 2021):

Doesn't work for me when connected over USB-C. Albeit, I have "USB-C Prioritization" set to "High Data Speed". Not sure if that makes a difference.

@chunheisiu commented on GitHub (Apr 22, 2021): Doesn't work for me when connected over USB-C. Albeit, I have "USB-C Prioritization" set to "High Data Speed". Not sure if that makes a difference.

gitea-mirror commented

2026-05-05 05:47:07 -06:00

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@maxsquared commented on GitHub (Apr 22, 2021):

Not sure why it's not working for you, but it works fine for me, mine runs Mac OS 11 Big Sur, connected with Caldigit TS3+ with DisplayPort, I am not sure if this information helps. If you want me to find out any monitor settings just let me know.

@maxsquared commented on GitHub (Apr 22, 2021): Not sure why it's not working for you, but it works fine for me, mine runs Mac OS 11 Big Sur, connected with Caldigit TS3+ with DisplayPort, I am not sure if this information helps. If you want me to find out any monitor settings just let me know.

gitea-mirror commented

2026-05-05 05:47:12 -06:00

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@Vchouliaras commented on GitHub (Apr 23, 2021):

Happens to me as well! The monitor is connected over usb-c on a Macbook pro m1.

The "USB-C Prioritization" setting on the monitor is set to "High Resolution"

@Vchouliaras commented on GitHub (Apr 23, 2021): Happens to me as well! The monitor is connected over usb-c on a Macbook pro m1. The "USB-C Prioritization" setting on the monitor is set to "High Resolution"

gitea-mirror commented

2026-05-05 05:47:15 -06:00

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@vtns commented on GitHub (Apr 25, 2021):

Happens to me as well! The monitor is connected over usb-c on a Macbook pro m1.

M1 Mac is not supported by this kind of utility which uses DDC/CI to control monitor's brightness.
There are nothing we can do about this unless Apple add a support of DDC/CI to M1 Mac.

@vtns commented on GitHub (Apr 25, 2021): > Happens to me as well! The monitor is connected over usb-c on a Macbook pro m1. M1 Mac is not supported by this kind of utility which uses DDC/CI to control monitor's brightness. There are nothing we can do about this unless Apple add a support of DDC/CI to M1 Mac.

gitea-mirror commented

2026-05-05 05:47:17 -06:00

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@JoniVR commented on GitHub (May 2, 2021):

Pretty sure this is an M1 issue, see #323. Closing for now, feel free to comment if you have this issue on Intel.

@JoniVR commented on GitHub (May 2, 2021): Pretty sure this is an M1 issue, see #323. Closing for now, feel free to comment if you have this issue on Intel.

gitea-mirror commented

2026-05-05 05:47:21 -06:00

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@chunheisiu commented on GitHub (May 14, 2021):

Mine is on an Intel. 2020 MacBook Pro 13".

@chunheisiu commented on GitHub (May 14, 2021): Mine is on an Intel. 2020 MacBook Pro 13".