LineageOS does not have a user-configurable setting to directly increase the maximum boot duration timeout. The boot process timeout is typically hardcoded in the bootloader or recovery environment, and if the system fails to boot within that time, it may reboot or enter recovery mode.
However, if you are experiencing boot loops or timeouts due to slow booting (which is common after a new install or update), here are some steps you can try to resolve the issue:
Wait Longer: The first boot after installing or updating LineageOS can take a very long time (sometimes up to an hour or more), especially if the device is optimizing apps or setting up the system for the first time. Try leaving it for at least 30-60 minutes before assuming it’s stuck.
Reinstall with Correct Order: Ensure you are flashing LineageOS, then GApps, and then Magisk (if used) in the correct order, and using compatible versions. Sometimes, using an older version of GApps or LineageOS can resolve boot issues.
Check Recovery: Use a compatible recovery like TWRP, and make sure it’s up to date. Some users have resolved boot issues by downgrading TWRP to a specific version.
Wipe and Reinstall: If the device is stuck, try wiping data, cache, and dalvik/cache, then reinstall LineageOS and GApps. Avoid installing TWRP as a system app if prompted.
Check for Bootloader/EEPROM Updates: On some devices, bootloader or EEPROM updates can affect boot times. If you recently updated the bootloader or EEPROM, check if there are known issues or rollbacks available.
Kernel Tweaks (Advanced): If you are rooted, some kernel managers allow tweaking CPU governor settings, which might indirectly affect boot behavior, but this is not a direct fix for timeout issues.
If your device is consistently failing to boot within the default timeout, it’s usually a sign of an installation issue rather than a need to increase the timeout itself. Reinstalling with the correct files and steps is the most reliable solution.
Are you experiencing a boot loop, or is the device just taking longer than expected to boot? If you provide more details about your device and the exact behavior, I can offer more targeted advice.