Would you happen to use Nova Launcher and/or have the built-in Seedvault backup setup and running, by any chance?It happened to me last night.
Curiously, the reboot was long and rough. Usually the reboot is is pretty fast, but for that one and one or two others, the LineageOS boot up graphic ran for a few minutes and eventually froze. The the phone rebooted and the boot up process finished that time. Shouldn't that be a clue about the cause of the random reboots?
Could we at least agree that the black screen issue has been fixed? Anybody still getting that?
That's correct- you've updated too far (irreversible) and won't be able to use LOS 18.1 anymore :\ Need to wait for a working version of LOS 19.1 at this point or use stockI've tried 18.1 multiple times, most recently without GApps, and it just bootloops. I'm on RPDS31.Q4U-39-26-14-10, so is this why? I'm not sure what you mean by other builds here.
In any case, I'm happy to donate once it's working. Either to LineageOS or somewhere else, whatever helps to keep this effort going.
/* * Your warranty is now void. * * I am not responsible for bricked devices, dead SD cards, * thermonuclear war, or you getting fired because the alarm app failed. Please * do some research if you have any concerns about features included in this ROM * before flashing it! YOU are choosing to make these modifications, and if * you point the finger at me for messing up your device, I will laugh at you. */