Overcoming power supply and software issues with a Raspberry Pi4
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In my first post in my Raspberry Pi NAS series, I mentioned I had issues with my external hard drives and had to buy an external (powered) USB hub, but I didn’t elaborate further.
What’s The Issue?
Among the many changes from its predecessor, the Raspberry Pi 4 now uses USB-C as its power supply rather than MicroUSB.
One downside of that? Maximum power draw of 1.2A…
What problems did that cause?
I kept seeing my 2x USB external HDDs being inaccessible and IO operations hung, requiring a reboot to restore service.
This was happening at least once per day, and I would see logs such as
[512.7159387] usb usb2-port: over-current change #1 [512.950593] usb 2-2: USB disconnect, device number 3 [512.952267] Buffer I/0 error on dev sdbl, logical block 1290, lost async page write
What did you do to resolve it?
As ever, thanks for reading and feel free to leave comments down below!