New monitor. Connected to Mac Mini. (2010 Mac Mini 4,1-- as far as I can tell, it doesn't appear that the Mini is talking to the Acer to make this happen). I'm finding that the screen/backlight gets gradually much brighter over about twenty/thirty minutes. Upon resuming from Standby mode, If I use the last saved brightness setting, it will start out on the too dim side, then finally resume the brightness and contrast levels I've set before letting the monitor sleep or turning it off--even becoming far brighter than that setting. ACM not enabled, but behaving a bit like what the ACM does in several seconds, if enabled. E.g. brightness needs to be toned down from 35, where it becomes unacceptably bright, to 25, then, after waking up 25 is much too dim.
I've set this up by the book: both Mini and Monitor powered down, both unplugged, connected HDMI cable, plugged both back in, opened monitor first, next the Mini (to get the correct handshake, presumably.)
Settings: DDC/CI-> ON, ACM -> OFF, DPS -> ON. None of the Eco/e stuff. Am currently testing with DPS and DDC/CI disabled to see if that makes any difference. EDIT: those settings didn't make any difference.
From the Mini System Report:
NVIDIA GeForce 320M:
Chipset Model: NVIDIA GeForce 320M
Type: GPU
Bus: PCI
VRAM (Total): 256 MB
Vendor: NVIDIA (0x10de)
Device ID: 0x08a4
Revision ID: 0x00a2
ROM Revision: 3546
Displays:
Acer H236HL:
Resolution: 1920 x 1080 @ 60 Hz
Pixel Depth: 32-Bit Color (ARGB8888)
Display Serial Number: (edited)
Main Display: Yes
Mirror: Off
Online: Yes
Rotation: Supported
Television: Yes Television????????
Is this behaving normally? Is there some minimum brightness/contrast level that, by design, it always has to revert to? What can I try to get the brightness and contrast levels to remain steady? Needing to constantly adjust the brightness and contrast gets really old fast. Will the same thing happen with a replacement? Is this monitor incompatible with Mac?
New monitor, which I would hate to have the hassle of having to return.
