hallo all fine here on an Intel i7-6700 box. thanks +++ UPDATE +++ ############## Regarding the above I need to be more accurate: The kernel compiles, boots and runs without errors -so far -. BUT: it seems under load it could lead to an dead box. what I did: running in one terminal: dmesg -w and in an second terminal: make clean && ccache -Czs && time make all -j $(nproc) leads within a minutes to an complete dead box after make has started ! - no output regarding crashes, etc. in the first terminal running dmesg - no mouse, no keyboard, no switch via CRTL+ALT+F3 to a console - the box is dead - only the power button helps with kernel 5.13.1 all the above is fine anyone (too) ? -- regards Ronald