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  • langdons
  • langdons
14 May 2025 15:41
Replied by langdons on topic Which kernel version is best for real time?

Which kernel version is best for real time?

Category: General LinuxCNC Questions

Disable all services except those you truly need.

Remove all removeable hardware except what you actually need.

I think blacklisting kernel modules works.

SSH is great for OS management and stuff, but not good for actually running the CNC.
  • tommylight
  • tommylight's Avatar
14 May 2025 15:40
Replied by tommylight on topic Which kernel version is best for real time?

Which kernel version is best for real time?

Category: General LinuxCNC Questions

This line in hal
loadrt [EMCMOT]EMCMOT base_period_nsec=100000 servo_period_nsec=[EMCMOT]SERVO_PERIOD num_joints=[TRAJ]AXES
Add base period after the EMCMOT.
  • langdons
  • langdons
14 May 2025 15:39
Replied by langdons on topic Which kernel version is best for real time?

Which kernel version is best for real time?

Category: General LinuxCNC Questions

The thing is a newer kernel will only have better performance if there has been significant changes in the area that are being used in your application. Changes to filesystems you don't use, drivers you don't or in architectures you don't use don't expect any improvements.
To be really sure you have to read change logs and stuff like that to be sure. Newer may very well be the same as what was supplied with the Linuxcnc ISO.
Oh and don't run any other network services that you use for your motion controller, in your case you should have a dedicated NIC for Remora and another for everything else.
I still don't know why people insist on using 3rd party remote desktop clients when X is actually was designed from networking from the beginning and there are plenty of available clients and servers in the distro repos that have been time tested.
Running a CNC machine remotely is a another kettle of fish. If you need to do remote admin use SSH and learn to get comfortable with the command line.

I agree entirely.

X was designed for remote desktop.

How can you tolerate the laggyness of remote desktop?

I find it unbearable.

Maybe you just have a really good ethernet connection over gigabit ethernet or something.

SSH over ethernet has really low latency, especially if you use macOS terminal with the Pro profile (XTerm is actually slightly faster, but has no support for copy/paste and stuff).
  • DarkPhoinix
  • DarkPhoinix
14 May 2025 15:26
Replied by DarkPhoinix on topic Which kernel version is best for real time?

Which kernel version is best for real time?

Category: General LinuxCNC Questions

Yes that is the correct place to put it.
While testing this, no stress test, no glxgears, no video, no youtube.

next insert lane give error:
# load the Remora real-time component

    loadrt remora-eth-3.0 PRU_base_freq=500000
    loadrt base_period_nsec=100000
Debug file information:
Note: Using POSIX realtime
base_period_nsec=100000: dlopen: /usr/lib/linuxcnc/modules/base_period_nsec=100000.so: cannot open shared object file: No such file or directory
./nvem-rt1052.hal:10: waitpid failed /usr/bin/rtapi_app base_period_nsec=100000
./nvem-rt1052.hal:10: /usr/bin/rtapi_app exited without becoming ready
./nvem-rt1052.hal:10: insmod for base_period_nsec=100000 failed, returned -1
35117
Stopping realtime threads
Unloading hal components
Note: Using POSIX realtime


  • langdons
  • langdons
14 May 2025 15:18

[SOLVED] New wifi card causes second parallel port to stop working

Category: General LinuxCNC Questions

lspci -v should list multiple addesses, try all of them.

Sometimes only one address works.

This tool may be useful:
www2.langdonstaab.ca/files/parportmgr_install.txt
yyao.ca/projects/ParallelPortLinux/

(I made an install script, I think it works)
I don't know the guy who actually wrote this, I just found the program on google. It does work for me.
  • unknown
  • unknown
14 May 2025 15:01

[SOLVED] New wifi card causes second parallel port to stop working

Category: General LinuxCNC Questions

Never said it wouldn't

Only mentioned on board serial & parallel ports on the ISA bus. Which is still there only not physically.
  • langdons
  • langdons
14 May 2025 14:57

Best practice for installing custom Python packages in LinuxCNC?

Category: General LinuxCNC Questions

Backwards?

In what sense?

Java is far, far more feature-rich than Python.

Python does not even have switch statements!


I think the main reason I like Java is the editor (Intellij IDEA CE) is free and good.

PyCharm just is not that great.

And I believe any life without true access modifiers is not a good life.
  • langdons
  • langdons
14 May 2025 14:52

[SOLVED] New wifi card causes second parallel port to stop working

Category: General LinuxCNC Questions

lspci -v lists my installed Sunix parallel port PCIe card.

I also lists the haxadecimal port thingy (0xe30 or something).

To OP: You can buy a single card with 2 parallel ports from Sunix.
www.sunix.com/en/product_detail.php?pid=1434
  • unknown
  • unknown
14 May 2025 14:51
Replied by unknown on topic Combined MESA board order for Australia.

Combined MESA board order for Australia.

Category: Driver Boards

"Asian knockoff", how the fuck would that be read as compatible ?
And where would one find one ?

And once again your stupid senseless post show up and add nothing.

Sometimes you can get less expensive shipping via a forwarder, might take a little longer to arrive, but may work out a little cheaper. But yeah it's been somewhat expensive for shipping Down Under...and no jokes about Qld being 20 years and 1 hour behind....it's non daylight savings time now hahaha

Oh those prices are going to be about 1.6 higher in Aussie beer tokens. So yeah it does end up costing heaps.
  • tommylight
  • tommylight's Avatar
14 May 2025 14:47

Best practice for installing custom Python packages in LinuxCNC?

Category: General LinuxCNC Questions

If you want to move away from Python, try "Ruby on Rails".
Going from Python to Java is absolutely moving backwards.
  • unknown
  • unknown
14 May 2025 14:42

[SOLVED] New wifi card causes second parallel port to stop working

Category: General LinuxCNC Questions

You can jam in as many parallel port cards as you have slots. They can be at any free address you have. If the on board one is buggered leaving it enabled will only affect the ISA compatible addresses, IE those hanging off the LPC bus. For the addresses allocated on the PCIe bus different realm, different interface, different bus. Hence the reason on board lpt ports don't show up via lspci, cos they are technically on the ISA bus but physically the LPC bus.
  • langdons
  • langdons
14 May 2025 14:40
Replied by langdons on topic Combined MESA board order for Australia.

Combined MESA board order for Australia.

Category: Driver Boards

Not a clone, a "compatible" device.

Support comes with a 90USD shipping cost.

Plus due to timezone differences, support will probably be impaired.
  • langdons
  • langdons
14 May 2025 14:35

[SOLVED] New wifi card causes second parallel port to stop working

Category: General LinuxCNC Questions

Please post the output of lspci -v

Did you try rearranging the cards?

Perhaps order matters.

Some computers are picky about such things.

Most computers I've seen have max 2 PCIe ports, you are fortunate to have 3, though perhaps this broken behavior explains why most PCs only have 2 ports.
  • workshop54
  • workshop54
14 May 2025 14:34

Best practice for installing custom Python packages in LinuxCNC?

Category: General LinuxCNC Questions

Fully agreed — if LinuxCNC ever gets a proper Java API, I’ll gladly throw my Python into the chip tray

Until then, I’ll just keep pretending my Python package has structure and discipline… while knowing deep down it’s all held together by logging statements and good intentions
  • unknown
  • unknown
14 May 2025 14:32
Replied by unknown on topic Combined MESA board order for Australia.

Combined MESA board order for Australia.

Category: Driver Boards

Oh great you're activly encourage someone to buy illegally cloned hardware, hardware mind that comes from a great company that gives fantastic support.
I've been waiting for you eff up.
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