Interesting: 2b:* 0f 01 c9 mwait %eax,%ecx <-- trapping instruction provided I've typed the Code: line right. Ok, questions: * this box worked before with previous kernels? * if so, pls boot it in a working kernel and upload full dmesg by doing # dmesg > dmesg.log * also, get the cpuid[1] tool (leap should have it) and do # cpuid -r > cpuid.log and upload that log too pls. That should be for now. Thx. [1]: https://software.opensuse.org/package/cpuid