· linux, opensource, python, debugging
How I fixed a 0..1 brightness slider in vdu_controls (Philips Evnia DDC/CI bug)
A Philips Evnia 27M2N5500Q on Linux gave me a brightness slider stuck at 0..1 in vdu_controls. Tracing it through DDC/CI, capability strings, and a parser bug — and submitting my first open-source fix.