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I am glad you got this working.
What version of linuxcnc are you using?
I feel we had this or a similar problem a while back.

Use AXIS at first; there's a reason it's the default.

It is easy for inexperienced users.

What version are you using?
 

Please quit giving this advice.
If there are bugs in other screens we want to know so we can fix them.

Tonight I asked chatGPT (not my first reflex).

It proposed to try running "LIBGL_ALWAYS_SOFTWARE=1 linuxcnc" to disable the GPU rendering (use software rendering) from what I understand.

And you know what... it worked!

To make the change permanent, I added "export LIBGL_ALWAYS_SOFTWARE=1" to the usr/bin/linuxcnc

Unless somebody has an idea of the real root cause. Now it is working. Probably not exploiting my GPU, but don't seems to cause problem.

Thanks!

glxgears works perfectly. That was part of the validation I made for the latency.

Coming from Mach3, QtDragon felt more natural.

After, if it is not working... I might have to try another one.

Have you set backlash in you ini file ?

Hello! We’re NidyCNC, and currently building PicoSwed, a compact Swiss-style CNC lathe with an epoxy-granite base maximum for damping and rigidity. We’d love your feedback before we lock key decisions. Early specs (in exploration) 

• ~700 mm Z travel, 25 mm bar capacity
• Up to 6,000 RPM servo spindle
• Options under study: live tooling, C-axis
• Likely control: LinuxCNC with a customized GUI

Why epoxy-granite?After ~2 years of research, we chose epoxy-granite to get low vibration + high rigidity in a compact, complex geometry—good for finish, tool life, and noise. What we’re asking from you If you have time, please take our 6–8 min survey. We’re especially looking for input on features, footprint/weight, power, and budget. Comments are just as helpful: rail layouts, guide-bushing choices, chip control, enclosure ideas. Survey:  docs.google.com/forms/d/e/1FAIpQLSfgZIjB.../viewform?usp=header  Transparency about Kickstarter & riskWe’re planning a Kickstarter in Q3 2026. Crowdfunding can be risky; to reduce risk we’re: 

• Manufacturing nearly all major parts in-house with our own equipment
• Using two vetted local suppliers only (ultra-precision spindle, large sheet-metal enclosure)
• Keeping the supplier list tight and local to control schedule and specs. The target for first beta/early units is Q2 2026. We’ll share build logs and test data before any crowdfunding starts.

What we’ll share back 

• Aggregated survey results + takeaways
• Early looks at test parts and FEA/measurement setups
• Beta details (opt-in)

 Notes: not a sales post; no preorders. If the project interests you can sign up for our waitlist :  www.waitlistr.com/lists/20470269/pico-swed-waitlist-nidycnc




 

With ethercat master installed it should be to just plug in the network cable, power on and the drive will show up in the "ethercat slaves" list, at least after "ethercat rescan".
If not, make sure the ethercat master is functioning "ethercat master -v" should show a lot of non-zero numbers.

Tune means to set the parameters in the servo drive so it follows the commanded position as closely as possible.
Usually involves PID parameters P, I and D in the drive, often some inertia setting.
I think there is a general guide in here to tune a servo. It is basically the same for all servos.
But your drive seems to have auto-tune. Check the manual and possibly download software.
And execute the auto-tune.
If your drive provides a following-error PDO use that to see how well it follows the commanded position.

The FERRORs are set as joint.?.f-error-lim from the ini file values outside of your hal file.
Set FERRORs to 1 inch and after you tuned the servos you can reduce them.

ddt takes the derivative of a pin value. ddt of the position feedback at constant velocity should be a constant value.
Very easy to spot if the feedback position isn't smooth. But you don't need to do that. Don't go there.

Summary: auto-tune.

 

Hi all is there a friendly soul out there, that have a parameter file ..? I can´t seem to get the RJ45 ports "online" like i have not made the right setup. i can connect to the drive via usb without any problems.

Best regards