Feature Request: Add undervoltage / low power warning to REplayOS #168
Description
Add a user-visible undervoltage / low power warning in REplayOS when the system detects insufficient power supply.
Currently, when the device is powered by a non-recommended or low-current power adapter, the system continues to operate without informing the user about unsafe power conditions.
This can mislead users into believing everything is working correctly, while the Raspberry Pi may be running under conditions that can cause instability, performance issues, or long-term hardware damage.
Problem to be solved
End users are not notified when undervoltage conditions occur.
Without a warning message, users may unknowingly use incompatible power adapters or accessories that do not meet the device’s power requirements, increasing the risk of system crashes, data corruption, or hardware degradation over time.
Proposed solution
When REplayOS detects undervoltage or insufficient current:
Display a clear and visible warning message in the system UI
Inform the user that the power supply is inadequate
Recommend using an official or compliant power adapter that meets Raspberry Pi power requirements
This behavior is already implemented in other retro-gaming operating systems (e.g. Recalbox), where power-related warnings are continuously shown to the user until the issue is resolved.