Comment 7 for bug 1765363

So, if I understand what's happening here. When switching to Intel, both Nouveau and the proprietary driver are blacklisted and the power management is disabled because of "nouveau.run-pm=0" kernel parameter. The discrete GPU is therefore always ON, but cannot be used at all.

Why not just blacklist the proprietary driver to let Nouveau take care of the power management? It would also be great, if possible, to add "nvidia-drm.modeset=1" kernel parameter to enable prime synchronisation to avoid tearing.