Weird Pi failure mode

jwz · Jul 13, 2026

I have a Pi 4 B that, after a power failure, seems unable to talk HDMI in any resolution higher than 1024x768. I have tried both ports, multiple cables, multiple monitors, and a known-good CF card. # xrandr. Screen 0: minimum 320 x 200, current 1024 x 768, maximum 7680 x ...