found 1093943 4.0.1-1~deb12u1 severity 1093943 serious thanks
Hello. Since version 4.0.1 is now in stable, this is now happening in stable as well. This does not happen always, but it happens often enough to consider it not suitable for release. In my tests, this fails 100% of the time on single-CPU systems and 40% of the time on systems with 2 CPUs. I think that's bad enough. Based on those tests, I recommend that you try GRUB_CMDLINE_LINUX="nr_cpus=1" first. If that does not work please contact me privately, and I will gladly provide a VM to test. Thanks.