Pixel 7 on Android 16: Screen won't turn on after locking, only reboot helps

Kkk

Hello. Has anyone else encountered this?
Device: Google Pixel 7
OS Version: Android 16
Firmware: Issue occurs on both official stock Google firmware and GrapheneOS (latest builds based on Android 16).
Note: Screen is not original (aftermarket replacement).

Problem Description:
After updating the device to Android 16, a critical bug appeared related to the lock screen. Symptoms are as follows:

I press the power button to lock the screen. The display turns off normally.
When trying to wake the device (power button, tap, or lift), the screen remains completely black. Backlight does not turn on.
The phone is not frozen and not powered off (although sometimes it does shut down completely). Tactile feedback from the fingerprint sensor works, notifications come through with sound, and the PC detects the device when connected via USB.
The only way to get the display working again is a forced reboot by long-pressing the power button.

What I've tried:

Factory reset — does not help. The bug returns within hours/days after a clean install.
Disabling "Adaptive brightness" and "Smooth display" — no effect.
Downgrading to the factory Android 14 firmware (with full data wipe) — problem disappears completely. The device works stably, and the screen turns on instantly in any situation.

Question:
Is there any known fix for this without downgrading to Android 14? Searching online hasn't yielded any working solution. Could the aftermarket screen be a factor in how Android 16 handles display drivers?

Thanks in advance for any help or insights!

de0u

Kkk Could the aftermarket screen be a factor in how Android 16 handles display drivers?

I am unaware of reports like this, but it's very plausible. Perhaps the display was tested a long time ago and not since.

Kkk

Update/ Additional info: After reproducing the issue several times (approximately 4-5 cycles of «lock black screen forced reboot»), the device is now stuck in a continuous boot loop. The boot loop is intermittently interrupted by the bootloader warning screen stating that the device is loading a different operating system. Following this screen, the device attempts to boot again, only to either restart or return to the same warning screen. It is impossible to boot into the system to collect logs or change any settings.

Johnnyloans

Kkk

Holding down the power button for a minute is the same as unplugging a working computer or a power outtage.

There is a chance of data loss or corruption and should be a last resort and rarely used if possible.

I am not sure what you flashed on it but maybe you can sideload an OTA update from the same source you got your install.