GPU power supply issue after installing Bazzite

I've just installed Bazzite and my asus 3080 gpu has started flashing 3 red lights.

A bit googling shows it's apparently an issue with power supply but I've got a 850W Gigabyte Ultra Durable 80+ Gold PSU and been running the same hardware for years on windows without this being an issue so I'm suspicious of it being a hardware issue.

Have there been any known issues with Bazzite and power supply? Maybe it's something to do with drivers?
Solution
hopefully it will be enough to just re-seat the cables
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