(superseeded) Linuxcnc on Linux Mint 19.3 quick and easy installation

this works:
download kernel 4.9.0-12-rt-amd64 from herehere
gdebi linux-image-4.9.0-12-rt-amd64_4.9.210-1+deb9u1_amd64.deb
edit /etc/default/grubthe line "GRUB_TIMEOUT=5" (lets you choose which kernel you like to boot)
reboot
select the newly installed kernel
hth
chris

The same kernel for Buster will work on Mint but has to be manually downloaded and installed.And the 5.4 kernel will also work on Buster.

Got 4.9.0-12-rt-amd64 installed, rebooted into it and am running lcnc-hw now for more than 35 minutes. So far no realtime delay. Hope it stays so.

With or without base thread ?
You do not need base thread if you do not plan to use software stepping/parallel port, so base thread is useless in that case and might cause worse servo latency.

I plan to use the dell 980s for a lathe and my ole router through parallel, so there is a base thread. for the deckel, I will use a hp 8300 cmt or sff. These will be tested with most suitable distro and kernel using just a servo thread. Once I got the hp's, sorted out which distro i wanna use, I will test the various machines and post the results here

besides: I'll redo the test on buster with the 4.9.0-12-rt-amd64 kernel too. Seems, that after setting the bios and the boot parameters about right, the kernel version seems to be the next big screw to tune. Once I found the best combo out, I will freeze it like that and do further optimisation trials on my spare pcs.

greez
chris

Hi Beagle
Playing around Seeed X86 boards possibilities
Used your fine iso that I downloaded few days agoo.

I tried apt update & apt upgrade an got following error.
..........
Reading state information... Done
91 packages can be upgraded. Run 'apt list --upgradable' to see them.
N: Skipping acquire of configured file '2.8-rtpreempt/binary-i386/Packages' as repository ' cnc.beaglebrainz.net/mintcnc bionic InRelease' doesn't support architecture 'i386'

Any idea ?

Mike_Eitel wrote: Hi Beagle
Playing around Seeed X86 boards possibilities
Used your fine iso that I downloaded few days agoo.

I tried apt update & apt upgrade an got following error.
..........
Reading state information... Done
91 packages can be upgraded. Run 'apt list --upgradable' to see them.
N: Skipping acquire of configured file '2.8-rtpreempt/binary-i386/Packages' as repository ' cnc.beaglebrainz.net/mintcnc bionic InRelease' doesn't support architecture 'i386'

Any idea ?

This is the one I used cnc.beaglebrainz.net/cdimage/cnc-19.2.0-...ate-uspace-64bit.iso

I have used it many time now without errors

Re this:- " tried apt update & apt upgrade an got following error."

I think it should be sudo apt-get update then sudo apt-get dist-upgrade

Yes for sure as root / sudo... Was just to lazy to write

I'm in the moment trying to run the latency script. Just have to find how i can loggin on the screen as root. Via xrdp i can, but that script will correctly not run remote.
And i'm in the same time going to add another m2 ssd. So maybe i will reinstall on that in parallel ... But anyhow, all versions of upgrading should in my eyes work...

Mike

Mike
What script do you want to run?
Normally opening a terminal (xterm) and a "sudo <runthatscript>" should be possible and successful
If you want a root password, then do greez
chris

I know.
And actualy i started a while ago from user in a terminal as su. And now screen shows some windsurfer.... So your scripts seems to run
Was not able to follow after start as i'm heavily distracted by my dayjob..

I saw that it is not running when logged in as root. There are a few things that make problems as i installed xrdp. And the new mint and rdp is not yet very compatible.
And also Tommy dislikes windows, i do a lot of remote via rdp, from my bussiness notebook.

So hope to add some measurements too, with not at all adapted version.
Mike