(SOLVED) hal_gpio: Operation not permitted fault cannot be solved

Print file information: RUN_IN_PLACE=no LINUXCNC_DIR= LINUXCNC_BIN_DIR=/usr/bin LINUXCNC_TCL_DIR=/usr/lib/tcltk/linuxcnc LINUXCNC_SCRIPT_DIR= LINUXCNC_RTLIB_DIR=/usr/lib/linuxcnc/modules LINUXCNC_CONFIG_DIR= LINUXCNC_LANG_DIR=/usr/lib/tcltk/linuxcnc/msgs INIVAR=inivar HALCMD=halcmd LINUXCNC_EMCSH=/usr/bin/wish8.6 LINUXCNC - 2.9.4 Machine configuration directory is '/home/cnc/linuxcnc/configs/my-mill' Machine configuration file is 'my-mill.ini' INIFILE=/home/cnc/linuxcnc/configs/my-mill/my-mill.ini VERSION=1.1 PARAMETER_FILE=linuxcnc.var TPMOD= HOMEMOD= TASK=milltask HALUI= DISPLAY=axis COORDINATES=X Y Z A KINEMATICS=trivkins coordinates=XYZA Starting LinuxCNC... Starting LinuxCNC server program: linuxcncsvr Loading Real Time OS, RTAPI, and HAL_LIB modules Starting LinuxCNC IO program: io linuxcnc TPMOD=tpmod HOMEMOD=homemod EMCMOT=motmod Found file(REL): ./my-mill.hal Shutting down and cleaning up LinuxCNC... Removing HAL_LIB, RTAPI, and Real Time OS modules Removing NML shared memory segments Debug file information: Note: Using POSIX realtime Failed to register output pin collection hal_gpio: rtapi_app_main: Operation not permitted (-1) ./my-mill.hal:4: waitpid failed /usr/bin/rtapi_app hal_gpio ./my-mill.hal:4: /usr/bin/rtapi_app exited without becoming ready ./my-mill.hal:4: insmod for hal_gpio failed, returned -1 2307 Stopping realtime threads Unloading hal components Note: Using POSIX realtime

cnc@raspberrypi:~$ groups cnc tty disk dialout sudo audio video plugdev users input render netdev i2c bluetooth gpio spi

Failed to register output pin collection This has nothing to do with permissions. It has to do with the pins you have chosen. The error message did not mention permissions. A lot of issues are able to be resolved by users reading the errors messages and not jumping to conclusions. The thread also includes information regarding choosing pins that are allocated to SPI. Either you missed this or chose to ignore it. The example hal & ini files do work with a fresh install, I have tested these myself.