Installing LinuxCNC 2.8 on Debian 11

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05 Mar 2022 15:49 #236438 by gitin
Replied by gitin on topic Installing LinuxCNC 2.8 on Debian 11
I installed as mentioned in forum.linuxcnc.org/9-installing-linuxcnc...an-11?start=0#229433. On Dell optiplex works fine, on MSI PRO 16T 10M there are big delays. Thank you.

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06 Mar 2022 15:35 #236515 by RJ11
Replied by RJ11 on topic Installing LinuxCNC 2.8 on Debian 11

 Apart from Bullseye being the latest stable Debian, what is the issue with using Buster for 2.8.
 

Hardware support.  I had a Dell Optiplex 790 that came with an add-in factory parallel port card.  It uses the parport_pc kernel module.  That particular card isn't supported by the 4.x kernel that comes with Debian 10.  Debian 11 has a newer kernel which supports it out of the box, 
 

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16 Mar 2022 16:24 - 16 Mar 2022 16:33 #237476 by tripwire
Replied by tripwire on topic Installing LinuxCNC 2.8 on Debian 11
Rodw's script worked well for me. Thank you!

A couple of questions though:

1.) There were the following other lines in sources.list:

deb deb.debian.org/debian-security/ bullseye-security main
deb-src deb.debian.org/debian-security/ bullseye-security main

deb deb.debian.org/debian bullseye-updates main
deb-src deb.debian.org/debian bullseye-updates main

I tried replacing "bullseye" with "unstable" but apt didn't like this so I just commented them out for the install. But should they be uncommented at this point? If so, should they be modified?

2.) How will I know when to change "unstable" to "testing" and then to something else like "bullseye" when the version becomes stable?

Debian is already informing me of available updates. Do I need to make changes to sources.list before installing these updates?

Thanks as always for your advice!
Last edit: 16 Mar 2022 16:33 by tripwire.
The following user(s) said Thank You: rodw

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16 Mar 2022 17:47 - 16 Mar 2022 18:01 #237480 by rodw
Replied by rodw on topic Installing LinuxCNC 2.8 on Debian 11
I changed my process and upgraded to the unstable branch by following some instructions on the Debian site
From a basic install of Debian 11 (Bullseye)
sudo apt install geany curl
sudo geany /etc/apt/sources.list
make sure any lines containing cd are commented out with a #
replace any reference to bullseye, buster or stable with unstable eg:
deb http://deb.debian.org/debian/ unstable main non-free contrib
deb-src http://deb.debian.org/debian/ unstable main non-free contrib
save and exit geany, then
sudo apt update
sudo apt full-upgrade
sudo apt install linuxcnc-uspace linuxcnc-uspace-dev mesaflash
reboot
type uname -a 
Last line is to check PREEMPT-RT kernel is running as its installed by the install
Linuxcnc should be in the menus or open a terminal and type:
linuxcnc

If you need to update to the latest version of master, you need to install from source but there are far fewer dependencies to install.

Note I did not install the docs as thats quite time consuming and we already have a slightly earlier version of them on the system. If you want them, remove the no-docs flag to ./configure
cd ~
mkdir /dev
cd dev
git clone https::/github.com/linuxcnc/linuxcnc.git
cd linuxcnc/debian
./configure uspace no-docs
cd ..
sudo apt install debhelper-compat dh-python autoconf gettext intltool libboost-python-dev libgl1-mesa-dev libglu1-mesa-dev libgtk2.0-dev libmodbus-dev libeditreadline-dev libusb-1.0-0-dev libxmu-dev python3-dev tcl8.6-dev tk8.6-dev yapps2
dpkg-buildpackage -b -uc
cd ..
sudo dpkg -i linuxcnc-uspace_ (tab)

Optionally install the dev package for mesaflash, halcompile, ethercat etc.
sudo dpkg -i linuxcnc-uspace-dev(tab)

This moved my version of QTplasmac from 1.222.178 when I did it.Note that opening an older sim version of QTplasmac generates an error with a missing .so file for the torch simulation.
The solution is to create a new sim by selecting from the Sample Configurations

To subsequently upgrade to the latest version of linuxcnc master
cd ~/dev/linuxcnc/src
git pull
cd ..
dpkg-buildpackage -b -uc
cd ..
sudo dpkg -i linuxcnc-uspace_ (tab)
optionally
sudo dpkg -i linuxcnc-uspace-dev(tab)
Last edit: 16 Mar 2022 18:01 by rodw.
The following user(s) said Thank You: johnmc1, gitin, daveyr

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26 Mar 2022 22:41 #238429 by robertspark
Replied by robertspark on topic Installing LinuxCNC 2.8 on Debian 11
may want to add a -j switch for your dpkg-buildpackage for your number of processors as it will spreed up the build time

in my case -j4

ymmv
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18 Nov 2022 17:37 - 18 Nov 2022 17:40 #257050 by JYves
Replied by JYves on topic Installing LinuxCNC 2.8 on Debian 11
Hi, I'm jean-yves from France,
I compiled LinuxCNC 2.9  and packaged following the RJ11 and robertsparc recommandations.
Added the -j6 since my cpu is a 6 parts amd : it was fast.
But before going futher  my questions are now :
1/ Would i have to compile into a realtime kernel?
2/ And may i hope a compiled kernel available and recommended for this ?
Thank's very much in advance.

Here my current kernel:
Linux DebianMsrv64 5.16.0-8.2-liquorix-amd64 #1 ZEN SMP PREEMPT liquorix 5.16-7.1~bullseye (2022-02-09) x86_64 GNU/Linux
SMP PREEMPT but not RT.
For now i just need to drive a CH341 machine (Arduino), it's a common 2D + laser light laser. I'll afford soon a drilling machine.
It is pluged on /dev/ttyUSB0
Thank You.
jeanyves.
 
Last edit: 18 Nov 2022 17:40 by JYves. Reason: Forget something

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18 Nov 2022 20:22 #257062 by rodw
Replied by rodw on topic Installing LinuxCNC 2.8 on Debian 11
normally, you would just install the PREEMP_RT kernel with something like

sudo apt-get install linux-image-rt-$(uname -r)

But because you are running a non standard kernel, this won't work. So yes, you need to compile the patched prempt_rt kernel or revert to a debian kernel.

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