Running linuxcnc on a Vnc connection

Hi
I have lcnc installed on a computer in the garage and its setup and running fine on my 3 axis mill. But now I want to be able to run debug my gcode in the preview window of lcnc from my computer in the house. For that I installed tightvnc on the lcnc computer and logged into it frrom the house. However when I attempt to start lcnc axis sim I get a Linux CNC Errors message.

It appears the error is about the XError of failed request: BadWindow (invalid Window parameter) perhaps because of vnc using :1 instead of the normal operation in :0 window.

Any help appreciated
Jim

Here is the pertinent part of the message the zip file below is the complete message:
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: 451
Current serial number in output stream: 452
9557
PID TTY STAT TIME COMMAND
9623
PID TTY STAT TIME COMMAND
Stopping realtime threads
Unloading hal components

What version of Linux (Debian/Ubuntu_ are you running?
I'm running Debian Wheezy and VNC without any issues.

Are you viewing this with Windows or Linux VNCviewer?

geoffs

Its lcnc 2.7.4 from the linuxcnc distro Linux mill 3.4-9-rtai-686-pae #1 SMP PREEMPT Debian 3.4.55-4linuxcnc i686 GNU/Linux
Viewing with tigervnc on centos the connection works fine and the desktop works otherwise.

Thanks
Jim

andy

That worked, actually both worked but I have a program paused on the mill right now so I didn't start up linuxcnc as it appeared to want to restart the session. I'll try it after I've finished the part.

I just ran into another problem maybe you know the answer to. Is there a way to get linuxcnc to reload the .ini file without restarting linuxcnc? I need to adjust the compensation amount on Z axis between coming to a plane from above or below its coming up short or long now as the scallop hight is doubled up once it comes to the plane from both directions.

Thanks
Jim

Andy

I thought that was the answer so I made my changes and restarted linuxcnc. I put a 0.01 backlash value into my Z axis and wrote a little gcode to come back to the same plane from both directions and stop. Now comes back to zero from both directions. Now I have to see how that will effect the depth setting when I do a .01 deep finish pass over my existing contour.
Oh yeah before shutting linuxcnc down I moved to a know position then did the restart and reset all axis to the original location.

Thanks
Jim

I use:
Sometimes VNC is also convenient. I believe a normal vncserver does not work due to OpenGL.

For vnc I do (on the cnc machine):

This is x0vncserver from TigerVNC. tigervnc.org/doc/x0vncserver.html
First define your password with vncpasswd. Then connect with: