./linuxcnc LINUXCNC - 2.9.0~pre0 Machine configuration directory is '/home/pi/linuxcnc/configs/by_interface.mesa.hm2-stepper1' Machine configuration file is '7i90.ini' Starting LinuxCNC... Found file(REL): ./hm2-stepper.hal Note: Using POSIX realtime hm2: loading Mesa HostMot2 driver version 0.15 hm2_rpspi: Unknown board at SPI0/CE0: MESA7C81 hm2_rpspi: rtapi_app_main: Operation not permitted (-1) ./hm2-stepper.hal:38: waitpid failed /home/pi/linuxcnc-rp10/bin/rtapi_app hm2_rpspi ./hm2-stepper.hal:38: /home/pi/linuxcnc-rp10/bin/rtapi_app exited without becoming ready ./hm2-stepper.hal:38: insmod for hm2_rpspi failed, returned -1 Shutting down and cleaning up LinuxCNC... hm2_rpspi: not loaded :0: exit value: 255 :0: rmmod failed, returned -1 hm2: unloading :0: unloadrt failed Note: Using POSIX realtime LinuxCNC terminated with an error. You can find more information in the log: /home/pi/linuxcnc_debug.txt and /home/pi/linuxcnc_print.txt as well as in the output of the shell command 'dmesg' and in the terminal