16 February

Apple has shared a new support document detailing a warning symbol that shows up when the screen is too hot, leading to reduced screen brightness on the MacBook Pro with Liquid Retina XDR Display or the Pro Display XDR. The company warns that MacBook Pro and Pro Display XDR screens may lose brightness when temperatures exceed 25 degrees.

The Apple Pro Display XDR and MacBook Pro 2021 have a caution icon on the Control Center menu bar that indicates the display is under low-power mode and is "using limited brightness." It has been found, Apple warns, that these products' screens are affected by room temperatures exceeding 77 degrees Fahrenheit, or 25 degrees Celsius, especially if "you've been watching very bright content for prolonged periods of time. " Brightness may be automatically reduced to prevent overheating in these situations.

For restoring normal performance, the company recommends lowering the room temperature (obviously) and closing applications with HDR content as well. The following steps should be taken if these steps are not possible, or for more severe situations, Apple recommends putting the computer to sleep for 5-10 minutes to reduce the screen temperature.

An extended period of bright content playing in a high-temperature room can cause this effect. You can lower the room's temperature and temporarily put a Mac to sleep to allow it to cool if you see the warning.

  • Shut down any apps that could be consuming considerable system resources on the MacBook Pro with Liquid Retina XDR display.
  • If your current workflow does not require a specific reference mode, use Apple XDR Display or Pro Display XDR.
  • Make the room more comfortable by lowering the ambient temperature.
  • Any HDR-enabled windows should be closed or hidden.
  • Your Mac can be put to sleep by selecting the Apple menu > Sleep. You can wake your Mac by pressing any key on the keyboard after your display has cooled down for 5-10 minutes.

The company advises users with this problem to contact Apple Support if the room's ambient temperature remains under 77 degrees Fahrenheit.

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