Unable to enter login PIN/Password after reboot IF "Bedtime Mode" is ON ( greyscale mode )

[40ZqTYY4ag3tAO4hdlxR1]

Build used

lineage_zerofltexx-userdebug 13 TQ3A.230901.001 eng.user.20241122.135909 dev-keys

Model number

G920F

Describe the bug

If "Bedtime mode" is turned ON, and the phone reboots. The Screen turns off before the user can enter PIN/Password/Pattern. The screen cannot be turned on , even though the phone has booted up waiting for user to enter PIN/Password/Pattern.

The user will be unable to enter the PIN/Password/Pattern till the screen turns on, which happens after "Bedtime mode" is turned OFF.

To Reproduce

1. Enable PIN/Password/Pattern at login Settings > Security
2. Go to Settings > Digital Wellbeing & Parental Control > Bedtime mode > "USE A SCHEDULE" > Set start time as your current time and End time 10 minutes from your current time. E.g. Start 21:00 - End 21:10. ⚠️ use a schedule , other wise you will not be able to log back in to the device till bedtime mode turns off.
3. Go to Settings > Digital Wellbeing & Parental Control > Bedtime mode > Screen options at bedtime > Enable Grayscale & Dim the wallpaper (tested with all combinations, of Dim the wallpaper ON & OFF, the culprit seems to be Grayscale ON )
4. When Bedtime mode starts ( Screen will be grayscale ) Reboot.
5. After reboot, ( the end of lineage on boot animation ) screen will be visible for approximately ~3 seconds, if you are unable to enter PIN/Password/Pattern during this period, the screen will turn off
6. Screen cannot be turned back on by
   - Tapping screen
   - Pressing power button
   - Tapping any physical buttons on the front of the phone
7. This state will persist till the Bedtime Mode Schedule set in step 2 is over, in this case at 21:11 tapping the screen will turn it on 🤷‍♂️

Any extra info

• Unable to provide video recording of this error, apologies.
• You can test that the device is powered on and operational if you try to take a screenshot by pressing the VOLUME DOWN + POWER button, you will hear the "screenshot sound" ,and the screenshot will be saved in your screenshots folder.
• This is not a critical issue