MESA 7i96s and remote access doen't work

Dear all,
Here is my problem. First I tried with a Raspberry PI, then now with a desktop computer. I have installed LinuxCNC on the Raspberry 2.8.  The Raspberry works acceptably over GPIO, only slow on one axis. If I set it to faster it misses step. So I installed a MESA 7i96s board. When I want to use it not on GPIO but on 7i96S it stops.

I tried it yesterday, with a new desktop computer. I installed the new debian and linuxcnc 2.9 recommended here. I would use both remotely, on the Raspberry with VNC, on the desktop I tried VNC, Remote Desktop, X via SSH (I would manage it from a windows laptop).

On the raspberry it works with the GPIO on VNC. As soon as I would use the 7i96S board at that moment the whole thing "freezes" and only by turning off the power supply the system can be restarted.

Yesterday I tried the same with a new desktop computer. The axis simulator works perfectly fine via remote desktop. If I select the 7i96S it also "freezing" and only responds to anything after power off. If I use the desktop's own keyboard, screen and mouse the 7i96S board works fine. If I want to access it remotely it stops immediately.

Does anyone have any experience with this? Has anyone tried this? Or does anyone have any ideas of what else I could try.

Gabor Vid

Sounds like possibly a network setup issue.

Is the 7I96S set for a 10.10.10.10 IP address?

Thank you, for your answer.

I'm not using the address 10.10.10.10. I set it according to the address range used on our LAN. The address of the 7i96s board is: 192.168.3.81. Raspberry PI 192.168.3.80; the desktop computer 192.168.3.82 the laptop 192.168.3.20

The 7i96s board works with a local monitor, mouse, and keyboard from the desktop computer, but the whole thing stops only with remote access. I tried this on the desktop machine with VNC, remote desktop, X-SSH forwarding, all of them gave the same result. The axis simulator works. At the moment, I don't have the opportunity to test whether it works with a local monitor, mouse and keyboard with the Raspberry.

You need a separate NIC for the LAN and for the MESA card.
The MESA card needs to be connected directly to the network card, no switch or anything between the MESA card and computer.
So keep 192.168.3.xxx for your LAN. And choose another network for the MESA card.
And this is a must, make sure the NIC connected to MESA card has a different address.
So say 10.10.10.10 for the MESA card and 10.10.10.11 for the NIC, do not give the MESA card and computer the same address (I see you already know this but just in case someone else reads this). Don't add an entry for DNS nor GATEWAY for that network. Do not give the MESA card and computer the same address. And no USB Network devices for the MESA network.
Also the computer running Linuxcnc must be directly connected to the MESA card.

Thanks for the reply. I can try it on Monday, because I can get another NIC. I will definitely write what the result was.

You can use my Mesa Configuration Tool to create your configuration as well as a whole lot more including firmware and pc tests. Also is instructions to setup the NIC for use with a Mesa Ethernet card.

JT