Dell XPS 9310 - Unrecoverable Black Screen when set to 0 Brightness

Basically the title - when I set the brightness to zero with the brightness keys, the screen stays black and won’t come back on. The system continues running – if a second monitor is plugged in, it continues working, and the laptop display is still detected. I’ve tried both increasing the brightness with the brightness keys and setting the display’s brightness manually from the terminal with brightnessctl and xrandr - nothing works except forcing a reboot.