MacBook pro early 2015 w/ Monterey 12.4

biomed27 wrote:

To clarify, the buttons for both the screen brightness and keyboard backlight work accordingly. What stopped working is the bar indicator that appears when pressing the button as displayed below. Before, the bar gradient indicator would display level of brightness when buttons were pressed. Now, the image below is what shown every time the buttons are pressed. Resetting the SMC did not resolve the issue.

https://discussions.apple.com/content/attachment/0ca2f906-a412-447d-9fb9-042880b2acdc

https://discussions.apple.com/content/attachment/0b7d3f75-96d3-4e99-91c4-776c6ce6e3d3

Interesting.

good clarification...

—You can try Safeboot and compare your results SafeBoot How to use safe mode on your Mac - Apple Support

log in and test. This test will tell you if third party interference; extensions etc are not loaded in safe boot mode.

—you can try adding a new user account and compare your results. this will tell if Universal issue

—resetting NVRAM/PRAM Reset NVRAM or PRAM on your Mac - Apple Support

  (**get at least two-three rounds of the chimes when holding the NRAM Reset)

If no resolve I would reinstall the macOS on top of your existing macOS to sort anomalies not easily isolated...

this will leave your user data untouched. Choose wisely, a current backup is always recommended.

How to reinstall macOS  Recovery (both M1 and Intel) — How to reinstall macOS - Apple Support

Uninstall all third party apps that are Cleaners/Optimizers/VPN/Anti-Virus

all known to cause issues on the macOS

biomed27 wrote:

Hello,

I've noticed that since updating to monterey, my MBP no longer displays screen/keyboard brightness indicator bars as shown in image attached. How can I resolve this?

https://discussions.apple.com/content/attachment/97ba04ae-fc03-4dea-86e7-bd79c6e12741

That appears to be Keyboard back light—

Have you rebooted more than once since your upgrade, that would be step one.

then verify the ambient light is not so strong as to shut it down

this would be >System Preferences>Keyboard

I will say it does not look like what I would expect to see, if ambient light was strong.

On a Intel Mac I would suggest you reset the SMC How to reset the SMC of your Mac - Apple Support

and compare your results.

.