Installing LinuxCNC 2.8 on Debian 11

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05 Mar 2022 15:49 #236438 by gitin
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

 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
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
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
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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