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Friday, September 5, 2025

hdmi – System Settings doesn’t acknowledge show mannequin or checklist right decision


I’ve two HP E243i shows plugged right into a USC-C hub which is plugged into an M1 Professional MacBook Professional operating macOS 15.5. One of many shows works advantageous. It exhibits up in System Settings > Shows as an HP E243i show, with quite a lot of out there resolutions, together with the right default of 1920 x 1200.

A screen shot of the Displays Settings for macOS, showing the resolution list for an HP E243i display, including a default of 1920 x 1200

Nonetheless, the second show, despite the fact that it is usually an HP E243i, exhibits up in system settings with no title and with solely two out there resolutions, 1280 x 720 (the default for some purpose) and 1920 x 1080.

Another screen shot from the Display Settings for macOS, this one showing a display with no name, and only two available resolutions, 1280 x 720 and 1920 x 1080

Since it is a 1920 x 1200 show, both of those two decision settings (which aren’t even the right side ratio) are visibly stretched.

Issues I’ve tried:

  • Swapping the HDMI cables
  • Plugging straight into the laptop computer
  • Manufacturing facility reset on the show
  • Restarting the laptop computer

Nothing will get macOS to make 1920 x 1200 out there for the show. Weirdly, one specific mixture of hub/port does get the damaged show to point out up with a reputation “1080p60” and with further decision choices, however nonetheless not 1900 x 1200.

The 2 shows are the identical mannequin however do have a unique Rev/Firmware model. The damaged one is AVM121 whereas the engaged on is DIM111. That stated, there are different AVM121 shows in my workplace, and people all work advantageous, so I do not assume that distinction is related.

Utilizing Show Port as an alternative of HDMI just isn’t an choice. Changing the entire show would possibly be an choice, however I might slightly keep away from it if I might.

So anybody have any concepts? Both a strategy to repair macOS or this show or to workaround the difficulty and drive macOS to make use of it as 1920 x 1200?

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