Detlef Vollmann wrote: > Hello, > > on my laptop (Lenovo X250) I run Debian testing. > On a recent upgrade the kernel was updated from 6.12.38+deb13-rt-amd64 > to 6.16.3+deb14-rt-amd64 (and now to 6.16.9+deb14-rt-amd64). > > With kernel 6.16 I lost /sys/class/backlight/intel_backlight. > I also don't have the i915 module anymore, which I suspect might > be related.
Very likely. Does it exist in /lib/modules/6.16.9+deb14-rt or similar? If so, can you modprobe it? Also: why are you using the RT build? -dsr-
