I have a laptop (System76 galago pro, tech specs) with integrated Intel Iris Xe graphics. Qubes mostly works fine on the laptop, but has numerous graphics limitations. I suspect the root cause for a few (all?) might be the same.
Problems I’m experiencing:
HDMI connections do not work. They seem never detected. Also display connections connected over USB-C are not detected.
Screen brightness adjustment (for the laptop display) does not work.
Redshift does not work.
I suspect the root cause to have something to do with graphics drivers. How do I begin to troubleshoot this? The lack of support for external display is the most annoying, really a blocker for my usability.