I bumped into the same issue as Nolan. I didn't try installing bookworm, but same outcome with the live CD (works) and via the Calamares installer (does not work).
I noticed that the system installed via Calamares comes only with a handful of firmware files. I couldn't get systemd to open a resuce terminal, perhaps because of this same issue, so I booted a console via the installation CD and then installed the firmware-intel-graphics package on the target chroot and updated the initarmfs image: # apt install firmware-intel-graphics # update-initramfs -u -k all The culprit seemed to be that the firmware files for the Xe iGPU for Lunar Lake were missing (/lib/firmware/xe/lnl_gsc_1.bin , /lib/firmware/xe/lnl_guc_70.bin, /lib/firmware/xe/lnl_huc.bin). I tested this by manually copying these three files instead of installing the Debian package, and the system booted up fine afterwards. In the end I also installed live-task-non-free-firmware-pc, so that sound and other things worked.
