```LINUXCNC - 2.8.0~pre1
Machine configuration directory is '/home/chris/dev/qtpyvcp-master/sim'
Machine configuration file is 'xyz.ini'
Starting LinuxCNC...
Found file(REL): ./hallib/core_sim_3.hal
Note: Using POSIX realtime
Found file(REL): ./hallib/spindle_sim.hal
Found file(REL): ./hallib/simulated_home.hal
Can't execute DISPLAY program qtpyvcp  
Shutting down and cleaning up LinuxCNC...
Before: spindle 0 speed 0.000000
Before: spindle 1 speed 0.000000
Before: spindle 2 speed 0.000000
After: spindle 0 speed 300.000000
After: spindle 1 speed 0.000000
After: spindle 2 speed 0.000000
task: 8 cycles, min=0.000019, max=0.010086, avg=0.005408, 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/chris/linuxcnc_debug.txt
and
    /home/chris/linuxcnc_print.txt
as well as in the output of the shell command 'dmesg' and in the terminal
```