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10 Mar 2025 15:06
Error when starting LinuxCNC: “undefined symbol: kinematicsSwitch” was created by workshop54
Error when starting LinuxCNC: “undefined symbol: kinematicsSwitch”
Category: General LinuxCNC Questions
Hi everyone,
I’ve been stuck on this issue for quite a while now and I cannot figure out what’s going wrong. I’m very new to LinuxCNC, but I’ve been programming for quite a few years (and I feel like a junior dev all over again!
).
I’m getting an error when trying to run LinuxCNC with my linuxcnc.ini file. I hope someone can help explain what’s going on and how to fix it.
Here is the output when I start LinuxCNC:
Has anyone encountered this before? I suspect it’s related to the motmod module, but I’m not sure how to resolve it.
I’ve attached the relevant configuration and log files:
Any help would be greatly appreciated!
I’ve been stuck on this issue for quite a while now and I cannot figure out what’s going wrong. I’m very new to LinuxCNC, but I’ve been programming for quite a few years (and I feel like a junior dev all over again!
I’m getting an error when trying to run LinuxCNC with my linuxcnc.ini file. I hope someone can help explain what’s going on and how to fix it.
Here is the output when I start LinuxCNC:
johan@LinuxCNC:~/linuxcnc/configs/maho_mh400e$ linuxcnc linuxcnc.ini
LINUXCNC - 2.9.4
Machine configuration directory is ‘/home/johan/linuxcnc/configs/maho_mh400e’
Machine configuration file is ‘linuxcnc.ini’
Starting LinuxCNC…
linuxcnc TPMOD=tpmod HOMEMOD=homemod EMCMOT=motmod
Note: Using POSIX realtime
Found file(REL): ./maho_mh400e.hal
hm2: loading Mesa HostMot2 driver version 0.15
hm2_eth: loading Mesa AnyIO HostMot2 ethernet driver version 0.2
hm2_eth: 192.168.1.121: INFO: Hardware address (MAC): 00:60:1b:18:80:0f
hm2_eth: discovered 7I94T
hm2/hm2_7i94.0: Low Level init 0.15
hm2/hm2_7i94.0: Smart Serial Firmware Version 43
Board hm2_7i94.0.7i77.0.1 Hardware Mode 0 = standard
Board hm2_7i94.0.7i77.0.1 Software Mode 0 = analogout_enables
hm2/hm2_7i94.0: 42 I/O Pins used:
...
motmod: dlopen: /usr/lib/linuxcnc/modules/motmod.so: undefined symbol: kinematicsSwitch
./maho_mh400e.hal:7: waitpid failed /usr/bin/rtapi_app motmod
./maho_mh400e.hal:7: /usr/bin/rtapi_app exited without becoming ready
./maho_mh400e.hal:7: insmod for motmod failed, returned -1
Shutting down and cleaning up LinuxCNC...
hm2_eth: in hm2_eth_reset
hm2_eth: HostMot2 ethernet driver unloaded
hm2: unloading
Note: Using POSIX realtime
LinuxCNC terminated with an error. You can find more information in the log:
/home/johan/linuxcnc_debug.txt
/home/johan/linuxcnc_print.txt
as well as in the output of ‘dmesg’ and in the terminal.Has anyone encountered this before? I suspect it’s related to the motmod module, but I’m not sure how to resolve it.
I’ve attached the relevant configuration and log files:
Any help would be greatly appreciated!
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