Advanced Search

Hi NTULINUX,

I finally had the chance to try out your Gentoo-based LinuxCNC distro on my N100 system — thanks for putting it together!

At first, I was a bit surprised (and honestly a little disappointed) because the initial latency results were significantly worse compared to my Debian 13 / KDE setup. I even posted my findings yesterday to share what I saw. However, after digging a bit deeper today, I discovered that when I installed your Gentoo distro onto a new NVMe drive, the BIOS settings had somehow been reset to defaults. That definitely explained the poor initial performance!
Once I re-applied the correct BIOS settings, the latency results improved considerably. While it's still not quite as good as what I get with my Debian 13 setup, it's much closer now. This seems to reinforce just how well LinuxCNC performs on Debian 13 — especially considering that my Debian system has full driver support, including for sound, whereas your Gentoo distro doesn’t include those drivers by default. When I disable the sound drivers on Debian, I get even lower latency, though honestly the out-of-the-box performance is already excellent, so no need to disable them.

I also noticed one strange behavior on Gentoo: although the Latency Histogram window is otherwise responsive, the graph and Elapsed Time sometimes appear to freeze and stop updating. Pressing the Reset button restarts the process, which confirms that the application itself isn't hanging — just the display updates seem to stop intermittently.

Below are the latency graphs for both systems after running for 30 minutes under the same conditions:

• 5x glxgears
• Heavy internet browsing with YouTube videos playing
• System stress via:
  

  $ stress-ng --cpu 4 --iomix 2 --vm 1 --vm-bytes 1G --timeout 2000s --metrics-brief

  
  
  
  
  
  
  
  
  Thanks again for your work on the Gentoo distro — curious to hear your thoughts!

<duplicate message; deleted>

Best bet is to google for the various internet resources for setting up vnc.
You may have some luck searching the forums, but it wasn't a package I thought needed, still don't, for running a CNC machine. I'm not a fan of running a CNC setup remotely.
If you just need to run an editor or even Linuxcnc remotely it can be via SSH.

When I think of it, it may not work very well with FF1 in this situation.
I guess orient just gives a position, without any ramping up and down.
Not like a motion profile with acceleration up and down.
My new bet is to set all FFs to zero and slowly increase P.

I´m using a Mesa 7i33 for the encoders and pwms. The encoders are Fanuc, so there is very little info to get on the specs of the encoders. All I know is they are TTL and 2000i/rev
All I have additionally is the schematics of the control where the encoder connection can be seen:
 

As it shows inverted channels I think they are differential types
And yes, the 7i33 is jumperd to TTL (Jumpers DOWN)

Hello, I am writing G-code files with parameters O<measure> call [#1] [#2] ... and I cannot access certain variables in LinuxCNC 2.9.4 (e.g., <#_tool_diameter>). I need to read this data in my tool table in order to develop my program. Can anyone help me?Thank you.

I am sometimes facing the same error just when the probe is tripped during the slow probe move. But I don't fully understand how this is related to the probe home?

Check my comment on page 9 for a csv config.

The above error is sorted out. But still joint following error

I downloaded the official image from here; www.linuxcnc.org/iso/rpi-5-debian-bookwo...25-01-27-0140.img.xz
Everything is ok, linuxcnc and ethercat master is working, 

I am trying to connect via VNC from remote, when I connected to 192.168.1.122:1 via VNC's password, its connecting but there is only blank gray screen,
I installed tightvncserver also, its same,
What should I do?

When machine comes out of estop it gives error "Remora FATAL ERROR [JASON Config]: Config file open failed (status=0xA2)".

Thank you very much for your help.

Have you made any further progress with this?

If someone can give me example config.txt and config files hal and ini for skr3 board, it would be really helpful. Or look at my config files for skr3.

Champion!