Big Sur beta 6 iMac 2020 screen brightness going bananas

[Giffel]

Is anyone else experiencing the screen brightness not working correctly on iMac 2020 with Big Sur installed?
Sometimes the screen dims all the way down when set to automatic no matter the brightness in the surroundings, also sometimes the colors just look wrong, did not have this problem with Catalina.

 

[Taz Mangus]

Have your tried resetting PRAM and SMC.

 

[Giffel]

Have your tried resetting PRAM and SMC.

Yes i have, unfortunatley i did not help.

 

[Taz Mangus]

Report it as feedback to Apple about the beta.

 

[Reaper0bot0]

I'm surprised you got it to install. I tried Public Beta 1 (couldn't download) and Public Beta 2 (I could download, but couldn't install). I'm on a 2020 iMac 27".

 

[Taz Mangus]

I'm surprised you got it to install. I tried Public Beta 1 (couldn't download) and Public Beta 2 (I could download, but couldn't install). I'm on a 2020 iMac 27".

Resolved in macOS Big Sur 11 beta 6

• macOS Big Sur 11 beta 6 is now supported for iMac (Retina 5K, 27-inch, 2020). (67093251)
  

Apple Developer Documentation

developer.apple.com

 

[Reaper0bot0]

Cool!

 

[Reaper0bot0]

So I've installed Public Beta 3 on my 2020 iMac 27" (base). No brightness issues thus far, seems to be working just fine!