The default 6.6.1 kernel installed on my Tumbleweed system does not boot. Upon
selecting it in GRUB, I see:
"Loading Linux 6.6.1-1-default ..."
"Loading initial ramdisk ..."
and the system hangs on this screen forever. My workstation's diagnostic LEDs
turn on in a pattern that, according to the service manual, indicates an "other
type of failure".
The workstation is a Dell T5600.
CPU: 2x Intel Xeon E5-2680 (v1)
RAM: 8x 8 GB DDR3 1600 MHz
GPU: Nvidia NVS510, I'm using nouveau drivers.

My kernel cmdline: root=UUID=5136bb35-acaa-4796-b463-8c9ef307025d splash=silent
quiet mitigations=auto

The latest default 6.5.9 kernel works fine on this machine.
I'm available for all kinds of testing/debugging, including kernel
recompilation with experimental patches and the like.