I am experiencing a problem with the backlight on my Framework 13. It seems to be randomly shutting off/setting brightness to zero. It’s abrupt enough that I initially thought this was a full graphics driver crash because the screen appeared blank, but I caught that I could make out some of what’s on the display with a bright external light. I’ve seen it happen during the installer, sitting at the desktop, at the login screen, etc so there’s no apparent pattern to reproduce the issue. Brightness controls seem to be otherwise working up to that point, but do not work once the issue triggers.
Could be an early adopter tax as I just upgraded to the Ryzen AI 5 340 mainboard. I’ve reproduced the problem in Ubuntu/Kubuntu 25.04, Manjaro 25.0.0 (250414) and Bluefin so whatever the cause it’s consistent across the current versions of the distros.