Hello friends.

I've been using Google Pixel 6a with GrapheneOS for several months and everything was working without any issues. Currently the phone is running GrapheneOS 2025011500 (the latest version at the time of writing). However today in the afternoon, out of a sudden (I am not aware of any change I made to the phone - I haven't installed any new application, neither have I changed any setting), the phone started rebooting itself. After the reboot I see a notification "system_server has crashed". And I am asked for a password to unlock the phone.

I feel that my issue is similar to the following:

Until I unlock the phone everything works without any issues. However once I unlock the phone, it starts misbehaving, it does not respond properly and after few seconds it reboots itself. I am not even able to change any settings or uninstall any application.

I tried to start the phone with SIM, without SIM, enabling Airplane mode, disabling Airplane mode, connecting the phone to charger, booting to Safe Mode, but I always end up with the same problem.

Please do you have some idea how I can diagnose what's the issue? I'd be happy to provide logs from the phone, however I am not really sure whether I can collect the logs in this state - is it possible to use adb / somehow collect the logs / interact with the phone via command line?

Please do you have some other ideas what could I try? I was wondering, since Android phones now use A/B partitioning, would it be possible to switch to another partition, which may have older version of the OS installed?

I'd be very grateful for any suggestions or help.

Thank you very much and have a nice day.