Under-voltage detected! (0x00050005) spams dmesg on new kernel 4.14.30-v7+ · Issue #2512 · raspberrypi/linux · GitHub
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Amazon.com: GeeekPi 18W 5V 3.6A Power Supply for Raspberry Pi 4/Orange Pi 5&5B, UL Listed Type C Power Supply with ON/Off Switch for Raspberry Pi 4 Model B 8GB/4GB/2GB/1GB, with a Micro