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[GH-ISSUE #283] dell up2715k in 5k mode #222

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opened 2026-05-05 05:26:43 -06:00 by gitea-mirror · 6 comments

gitea-mirror commented

2026-05-05 05:26:43 -06:00

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Originally created by @mrmggo on GitHub (Aug 29, 2020).
Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/283

Originally assigned to: @waydabber on GitHub.

Can you increase the brightness control of dell up2715k in 5k mode?
At present, the brightness can be perfectly controlled in 4k mode, but it cannot be controlled in 5k mode.
In windows system, the brightness control in 5k mode can be realized by installing the official dell software.

Thank you

Originally created by @mrmggo on GitHub (Aug 29, 2020). Original GitHub issue: https://github.com/MonitorControl/MonitorControl/issues/283 Originally assigned to: @waydabber on GitHub. Can you increase the brightness control of dell up2715k in 5k mode? At present, the brightness can be perfectly controlled in 4k mode, but it cannot be controlled in 5k mode. In windows system, the brightness control in 5k mode can be realized by installing the official dell software. Thank you

gitea-mirror

2026-05-05 05:26:43 -06:00

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gitea-mirror commented

2026-05-05 05:26:49 -06:00

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@chongkong commented on GitHub (Sep 14, 2020):

That's strange. I'm using up2715k in 5k and I'm having full control over display brightness with MonitorControl. Using Catalina 10.15.6 and the latest dell driver in mac mini 2018.

@chongkong commented on GitHub (Sep 14, 2020): That's strange. I'm using up2715k in 5k and I'm having full control over display brightness with MonitorControl. Using Catalina 10.15.6 and the latest dell driver in mac mini 2018.

gitea-mirror commented

2026-05-05 05:26:51 -06:00

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@JoniVR commented on GitHub (Sep 19, 2020):

Could perhaps be a bandwidth issue then? Try the Monitor troubleshooting guide:
https://github.com/MonitorControl/MonitorControl/wiki/Monitor-Troubleshooting

@JoniVR commented on GitHub (Sep 19, 2020): Could perhaps be a bandwidth issue then? Try the Monitor troubleshooting guide: https://github.com/MonitorControl/MonitorControl/wiki/Monitor-Troubleshooting

gitea-mirror commented

2026-05-05 05:26:54 -06:00

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@mrmggo commented on GitHub (Sep 21, 2020):

Thanks Reply
I have updated to 2.1.0 and still cannot control my 2715k in 5k
I installed Dell Display Manager Application under windows, which can control the brightness and volume of the display very well, and it works in 5k mode
Can't succeed under macos, try to use ddcctl still can't
My hardware is imac2019, and the graphics card is vega48. The display is connected to the display through 2 dp cables of Thunderbolt 3 output. The macos system version is 10.15.
I tried to find the macos version of Dell Display Manager Application on the Dell official website, but couldn't find it.

@mrmggo commented on GitHub (Sep 21, 2020): Thanks Reply I have updated to 2.1.0 and still cannot control my 2715k in 5k I installed Dell Display Manager Application under windows, which can control the brightness and volume of the display very well, and it works in 5k mode Can't succeed under macos, try to use ddcctl still can't My hardware is imac2019, and the graphics card is vega48. The display is connected to the display through 2 dp cables of Thunderbolt 3 output. The macos system version is 10.15. I tried to find the macos version of Dell Display Manager Application on the Dell official website, but couldn't find it.

gitea-mirror commented

2026-05-05 05:26:56 -06:00

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@Rastafabisch commented on GitHub (Dec 2, 2020):

This is related.

@Rastafabisch commented on GitHub (Dec 2, 2020): [This](https://github.com/kfix/ddcctl/issues/51) is related.

gitea-mirror commented

2026-05-05 05:26:58 -06:00

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

Whops, this is a legit issue, sorry for closing it. :)

We'd need somebody with a access to 5k display with dual DP and an Intel mac and the proper skills to help figuring this out. I think this issue should be raised as an issue at https://github.com/reitermarkus/DDC.swift/issues.

You can try version 3.0.0 though as it has some tweaks in display detection logic, but I honestly don't think that it will work. Let me know if this issue still persists in the current version! Thank you!

@waydabber commented on GitHub (Aug 21, 2021): Whops, this is a legit issue, sorry for closing it. :) We'd need somebody with a access to 5k display with dual DP and an Intel mac and the proper skills to help figuring this out. I think this issue should be raised as an issue at https://github.com/reitermarkus/DDC.swift/issues. You can try version 3.0.0 though as it has some tweaks in display detection logic, but I honestly don't think that it will work. Let me know if this issue still persists in the current version! Thank you!

gitea-mirror commented

2026-05-05 05:26:59 -06:00

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@waydabber commented on GitHub (Aug 25, 2021):

I'll close this issue for now but please feel free to comment if there is anything we can do. If the issue persists, we can reopen this issue! Thank you!

@waydabber commented on GitHub (Aug 25, 2021): I'll close this issue for now but please feel free to comment if there is anything we can do. If the issue persists, we can reopen this issue! Thank you!