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MacinMan

macrumors 65816
Original poster
Jan 27, 2011
1,236
679
Denham Springs, LA
Hey all,

I've noticed a strange issue with my late 2015 iMac 27" running High Sierra 10.13.5.

I have the auto adjust brightness toggle checked in system preferences Displays, and holding a light up, and then moving it away causes the display to change as expected. However, when examining System Profile Graphics / Displays it says No for Automatically Adjust brightness. I have tried a PRAM reset, and also toggling the setting off and back on, but the value in System profiler doesn't change. The same value is listed on a late 2013 MBP as N, when it's enabled. What's going on here, and is there something I need to do to make it say yes? Or, am I reading it wrong.

Thanks,

AMD Radeon R9 M395:



Chipset Model: AMD Radeon R9 M395

Type: GPU

Bus: PCIe

PCIe Lane Width: x16

VRAM (Dynamic, Max): 2048 MB

Vendor: AMD (0x1002)

Device ID: 0x6920

Revision ID: 0x0001

ROM Revision: 113-C905AA-799

VBIOS Version: 113-C905A1-007

EFI Driver Version: 01.00.799

Metal: Supported, feature set macOS GPUFamily1 v3

Displays:

iMac:

Display Type: Built-In Retina LCD

Resolution: 5120 x 2880 Retina

Framebuffer Depth: 30-Bit Color (ARGB2101010)

Main Display: Yes

Mirror: Off

Online: Yes

Automatically Adjust Brightness: No
 
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