sly@SlyNotes:~/linuxcnc/configs$ linuxcnc
LINUXCNC - 2.7.15
Machine configuration directory is '/home/sly/linuxcnc/configs/pendant_nejde'
Machine configuration file is 'pendant.ini'
Starting LinuxCNC...
Found file(REL): ./pendant.hal
Note: Using POSIX realtime
Found file(REL): ./custom.hal
Unexpected realtime delay on task 0
This Message will only display once per session.
Run the Latency Test and resolve before continuing.
Unexpected realtime delay on task 0
This Message will only display once per session.
Run the Latency Test and resolve before continuing.

init_serialport: Unable to open port : No such file or directory
custom_postgui.hal:8: Pin 'halui.axis.x.pos-relative' does not exist
Shutting down and cleaning up LinuxCNC...
task: 162 cycles, min=0.000020, max=0.021204, avg=0.008950, 0 latency excursions (> 10x expected cycle time of 0.010000s)
Note: Using POSIX realtime
LinuxCNC terminated with an error.  You can find more information in the log:
    /home/sly/linuxcnc_debug.txt
and
    /home/sly/linuxcnc_print.txt
as well as in the output of the shell command 'dmesg' and in the terminal