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20-inch, 23-inch, and 30-inch aluminum LCD displays introduced by Apple in June 2004. Models A1081, A1082, and A1083 respectively.

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Apple Cinema Display 30" - Detected but not powering on

Hi there,

I just purchased two Apple Cinema Displays - both "30". I checked each display before I bought it -- worked perfectly. However, after driving home with the displays and plugging each into my MBP M1 via a separate USB-C to Dual DVI adapter, one display works perfectly (and is detected as Cinema HD), but the other display is showing just a black screen, and the LED power indicator is also dark, and is detected, but not as a Cinema HD display, but as "Display". Any ideas on what I should do?

This is what the System Information shows:

Apple M1 Pro:

  Chipset Model: Apple M1 Pro

  Type: GPU

  Bus: Built-In

  Total Number of Cores: 14

  Vendor: Apple (0x106b)

  Metal Family: Supported, Metal GPUFamily Apple 7


Cinema HD:

  Resolution: 2560 x 1600

  UI Looks like: 2560 x 1600 @ 60.00Hz

  Main Display: Yes

  Mirror: On

  Mirror Status: Master Mirror

  Online: Yes

  Rotation: Supported


  Resolution: 2560 x 1600

  UI Looks like: 2560 x 1600 @ 60.00Hz

  Mirror: On

  Mirror Status: Hardware Mirror

  Online: Yes

  Rotation: Supported

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Do you have a multimeter?


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I have one of these too (with the same issue)and I have found that if I use a adapter to put it in a different port(in my case it’s DVI to HDMI)it will work just fine again

I don’t think it’s a problem with the display,I think it’s just a strange case of it acting strange and not communicating with the computer/GPU correctly

Hopefully this helps

Any questions please ask


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