Solved boot hangs after loading i915kms

(Edit: T-Aoki beat me to it ;) )

So, the solution for those who don't build from source is to stay on 14.1
You have another option for 14.2-RELEASE: Possible solution to the drm-kmod kernel mismatch after upgrade from Bapt.

You should be able to get the 14.2-RELEASE specifc package versions after making the mentioned changes to FreeBSD.conf and then follow the command sequence in the message #41: installing drm-kmod. If you already have drm-kmod installed, just step in after that. This even makes a decoupling of drm-kmod and drm-61-kmod unnecessary: drm-61-kmod remains "dependend" on drm-kmod; the same holds for specific 14.2-RELEASE firmware packages/flavors, like for example gpu-firmware-intel-kmod-skylake.
 
I just hit this one this evening, doing a fresh install of 14.2 RELEASE on my thinkpad X201. I isolated the bug down to a manual 'kldload i915kms', which resulted in a blank screen, no VT switching but with the capslock led still responsive so presumably terminal still accepting input. The pkg install -f drm-515-kmod fixed it for me. I checked that Xorg.0.log shows the modesetting driver loaded with glamor accel and DRI driver crocus loaded. So drm-515-kmod appears to work on this hardware.

I'll try the eric/t-aoki thing later, for now I just wanted to get to first base!
 
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