Brightness keeps jumping

[edvin941]

Model Name: Zenfone 9

Firmware Version: UKQ1.230924.001.34.0304.2004.145 release-keys

Rooted or not: Not rooted

Frequency of Occurrence: A few times per day

APP Name & APP Version (If your issue relates to the app): Not app related

Issue Description:
I'm experiencing an issue where the display changes brightness unexpectedly — for example, when moving from maximum brightness to a lower brightness level. This happens randomly several times a day.

I have already tried restarting the phone and resetting adaptive brightness, but the problem still persists.

[Mattias_ASUS]

Hello @edvin941 

It sounds like the adaptive brightness is on, you can turn it off by going to Settings > Display > Adaptive brightness.

[edvin941]

Adaptive brightness in the settings is OFF

[Nigil]

Looks like back light controller is having some issues. My device was showing such symptoms back 3 months and the mother board is having an issue now. Get it checked asap if the device is under warranty. Service team had declined my warrenty by saying some unprofessional reason.

[Mattias_ASUS]

I would like the team to look into this, could you please share a log while recreating the issue so that the team can look into it?
I'm writing the steps down below and feel free to send me a DM when you are done.

Please follow the below steps to enable the built-in log tool (Bug reporter).
1. Open “Calculator APP”
2. Enter “.19595+=”
3. Select the Log type according to the type of issue you want to capture. “General cases” will work for most issues.
4. After your selection the log tool will exit so you can duplicate the issue or wait for it to happen. Try to use the screen recorder to show your issue when possible. If you can't screen record your issue, then please take a screenshot right after the issue has occurred (as a timestamp) so we know where to look in the log.
5. Navigate back to the log tool via calculator and Tap "FINISH AND SHARE".
6. It takes several minutes for the log to generate. You can exit and do other stuff in the meantime. A silent notification will tell you once the process is done. Tap the notification and then the share button to upload the file to Google Drive and share the link with a moderator. Just make sure to change the permission first so that everyone with the link has permission to view it.
Note: When you're no longer planning on logging your device, enter “.09595+=” in the calculator and the log tool will stop as well as deleting all stored log files. Make sure to share via calculator. The files found in internal storage -> asus_log are not the correct files (they are only 1.2kb)