Using Axis-Remote over SSH

The command causes the EMC2 configuration tool to open. But when I select my existing configuration with AXIS already running on the Linux machine, it asks if I would like to restart AXIS or not. When I select 'yes' the Linux screen goes black and becomes unresponsive, and my remote connection eventually times out and disconnects.

Without AXIS already running, the configuration process continues, but I receive an error and the configuration process halts:


Print file information:
RUN_IN_PLACE=no
EMC2_DIR=
EMC2_BIN_DIR=/usr/bin
EMC2_TCL_DIR=/usr/share/emc/tcl
EMC2_SCRIPT_DIR=
EMC2_RTLIB_DIR=/usr/realtime-2.6.32-122-rtai/modules/emc2
EMC2_CONFIG_DIR=
EMC2_LANG_DIR=/usr/share/emc/tcl/msgs
INIVAR=inivar
HALCMD=halcmd
EMC2_EMCSH=/usr/bin/wish8.5
EMC2 - 2.4.6
Machine configuration directory is '/home/jeff/emc2/configs/beam_mapper'
Machine configuration file is 'beam_mapper.ini'
INIFILE=/home/jeff/emc2/configs/beam_mapper/beam_mapper.ini
PARAMETER_FILE=emc.var
EMCMOT=motmod
EMCIO=io
TASK=milltask
HALUI=
DISPLAY=axis
NML_FILE=
Starting EMC2...
Starting EMC2 server program: emcsvr
Loading Real Time OS, RTAPI, and HAL_LIB modules
Starting EMC2 IO program: io
Starting EMC2 TASK program: milltask
Starting EMC2 DISPLAY program: axis
Shutting down and cleaning up EMC2...
Killing task emcsvr, PID=1979
Killing task milltask, PID=2047
Removing HAL_LIB, RTAPI, and Real Time OS modules
Removing NML shared memory segments
Cleanup done

Debug file information:
X Error of failed request: BadWindow (invalid Window parameter)
Major opcode of failed request: 3 (X_GetWindowAttributes)
Resource id in failed request: 0xffffffff
Serial number of failed request: 736
Current serial number in output stream: 737
1979
PID TTY STAT TIME COMMAND
2047
PID TTY STAT TIME COMMAND
Stopping realtime threads
Unloading hal components

Kernel message information:
[ 274.389111] I-pipe: Domain RTAI registered.
[ 274.389130] RTAI[hal]: .8.1> mounted over IPIPE-NOTHREADS 2.6-03.
[ 274.389137] RTAI[hal]: compiled with gcc version 4.4.3 (Ubuntu 4.4.3-4ubuntu5) .
[ 274.389262] RTAI[hal]: mounted (IPIPE-NOTHREADS, IMMEDIATE (INTERNAL IRQs DISPATCHED), ISOL_CPUS_MASK: 0).
[ 274.389269] PIPELINE layers:
[ 274.389276] fa0fde20 9ac15d93 RTAI 200
[ 274.389283] c085cb20 0 Linux 100
[ 274.438021] RTAI[malloc]: global heap size = 2097152 bytes, <BSD>.
[ 274.438698] RTAI[sched]: IMMEDIATE, MP, USER/KERNEL SPACE: <with RTAI OWN KTASKs>, kstacks pool size = 524288 bytes.
[ 274.438714] RTAI[sched]: hard timer type/freq = APIC/12499768(Hz); default timing: periodic; linear timed lists.
[ 274.438725] RTAI[sched]: Linux timer freq = 250 (Hz), TimeBase freq = 1800053000 hz.
[ 274.438732] RTAI[sched]: timer setup = 999 ns, resched latency = 2943 ns.
[ 274.438868] RTAI[usi]: enabled.
[ 274.518336] RTAI[math]: loaded.
[ 274.634932] config string '0x378 out '
[ 278.966278] RTAI[math]: unloaded.
[ 279.008815] SCHED releases registered named ALIEN RTGLBH
[ 279.076448] RTAI[malloc]: unloaded.
[ 279.176030] RTAI[sched]: unloaded (forced hard/soft/hard transitions: traps 0, syscalls 0).
[ 279.182421] I-pipe: Domain RTAI unregistered.
[ 279.182572] RTAI[hal]: unmounted.

sorry, either joomla or I omitted a backslash (\) character in the example
command for grep with multiple expressions

I'm trying to suggest running a ps command to determine if axis and/or
other emc related programs are running.

ps ax ________________ Shows all processes
| ____________________ Pipes output to the next command
grep -iE 'axis|emc' ______ looks for emc related items in output from ps

maybe using single quotes will help, you could try:

$ from_remote_machine ssh -X name_of_emc_machine ps ax|grep -iE 'axis|emc'

(all one line)

On my test, I get:

$ ssh -X u51 ps ax|grep -iE axis\|emc
16971 pts/2 S+ 0:00 /bin/bash /home/git/emc/scripts/emc sim_mill.ini
17000 pts/2 S+ 0:00 emcsvr -ini /home/gemc/mysim/sim_mill.ini
17009 pts/2 S+ 0:02 io -ini /home/gemc/mysim/sim_mill.ini
17011 pts/2 S+ 0:18 halui -ini /home/gemc/mysim/sim_mill.ini
17016 pts/2 S+ 3:22 /home/git/emc/bin/rtapi_app load trivkins
17022 pts/2 Sl+ 1:33 /usr/bin/python /home/git/emc/bin/hal_manualtoolchange
17027 pts/2 S+ 5:28 milltask -ini /home/gemc/mysim/sim_mill.ini
17028 pts/2 Sl+ 2:58 /usr/bin/python /home/git/emc/bin/axis -ini /home/gemc/mysim/sim_mill.ini

showing the relevant processes on the machine named u51

However, your note that "it asks if I would like to restart AXIS or not"
indicates axis is running so I'm out of ideas.

Based on Andy's remark about opengl, the command glxinfo might give
some information, e.g.:

$ from_remote_machine ssh -X emc_machine glxinfo

Maybe emcrsh will do what you want, for info:
$ man emcrsh

dgarrett wrote:

I'm trying to suggest running a ps command to determine if axis and/or
other emc related programs are running.

It is worth noting that the default shell in Lion is bash, but you might have a carryover setting which is over-riding that. (the default used to be tcsh)

spartan21 wrote:

The command causes the EMC2 configuration tool to open. But when I select my existing configuration with AXIS already running on the Linux machine, it asks if I would like to restart AXIS or not. When I select 'yes' the Linux screen goes black and becomes unresponsive, and my remote connection eventually times out and disconnects.
...
X Error of failed request: BadWindow (invalid Window parameter)
Major opcode of failed request: 3 (X_GetWindowAttributes)

This matches my experience.
So far I have been unable to run any application which uses OpenGL via ssh -X.
You will probably find that you can run the tkemc examples without any trouble.

Does VNC offer you what you want? You can type vnc://servername in the Connect to Server dialog and control the remote computer that way, which is what I tend to do.

Hi Andy,

Doing a google search for VNC gives a bunch of hits. Are you using a built in VNC on your Mac or some other version?

Thanks
John

Well more googling shows me that Ubuntu has both the server and client built in...

John