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Installing Linuxcnc on Chromebook.

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18 Jan 2021 12:56 - 18 Jan 2021 20:31 #195780 by rodw
Installing Linuxcnc on Chromebook. was created by rodw
It works!



No excuse not to be on top of Linuxcnc now!

Chromebook allow you to run Debian Buster. You just need to enable the app in settings.

Just follow the normal build process and sort out the dependencies
linuxcnc.org/docs/devel/html/code/building-linuxcnc.html

Here are the packages I installed
sudo apt install build-essential
sudo apt install software-properties-common
sudo apt install pkg-config
sudo apt install libudev-dev
sudo apt install libmodbus-dev
sudo apt-get install libusb-1.0-0-dev
sudo apt-get install libgtk2.0-dev
sudo apt-get install yapps2
sudo apt-get install intltool
sudo apt-get install tcl
sudo apt-get install tcllib
sudo apt-get install tcl-dev
sudo apt-get install tk-dev
sudo apt-get install bwidget
sudo apt-get install libtk-img
sudo apt-get install tclx
sudo apt-get install python-gtk2
sudo apt-get install libreadline-gplv2-dev
sudo apt-get install python3-tk
sudo apt-get install python-tk
sudo apt-get install libboost-all-dev
sudo apt-get install libglu1-mesa-dev
sudo apt-get install libxmu-headers
sudo apt-get install libxmu-dev

So next step is to get QTPlasmac running. I know from the past, there is another list of Python dependencies somewhere. Hope I can find them again!

EDIT. - to install QTpvcp
# to Install QT
Run Phill's stickied QTvcp installation script https://forum.linuxcnc.org/qtvcp
pip install xlib
pip install pyOpenGL

Now I'm wondering if I can't patch the kernel to Preempt_Rt.
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Last edit: 18 Jan 2021 20:31 by rodw.

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18 Jan 2021 15:31 #195807 by tommylight
Replied by tommylight on topic Installing Linuxcnc on Chromebook.
Use the install script Phill made for QTVCP, it worked on 4 PC/laptops, 2 of them with prior failed attempts, just make sure the partner and source code repositories are enabled.
This was on 19.3 Mint Mate, took over 2 hours usually to get it working, now 5 minutes ! So thank you Phill.
Btw it is a sticky on the qtvcp section of the forum.

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18 Jan 2021 20:18 #195818 by rodw
Replied by rodw on topic Installing Linuxcnc on Chromebook.
So getting close. Did that and got an error so installed xlib as below
Run Phill's stickied QT script
pip install xlib
I also installed the designer. It opened but I di not see any Linuxcnc specific widgets which I expected

So now get an error.
QTvcp][CRITICAL]  Aborted from Error Dialog
 Qtvcp encountered an error.  The following information may be useful in troubleshooting:
LinuxCNC Version  : 2.9.0~pre0

Traceback (most recent call last):
  File "/home/rod/linuxcnc-dev/lib/python/qt5_graphics.py", line 670, in initializeGL
    self.object = self.makeObject()
  File "/home/rod/linuxcnc-dev/lib/python/qt5_graphics.py", line 944, in makeObject
    genList = GL.glGenLists(1)
NameError: global name 'GL' is not defined

I am not sure on the next step.

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18 Jan 2021 20:26 #195821 by rodw
Replied by rodw on topic Installing Linuxcnc on Chromebook.
Hmm, seems like this fixed it
pip install pyOpenGL



So I think that just leaves the missing Linuxcnc widgets in designer to fix

I forgot to say that you can install a desktop like mate in the linux container... very cool
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18 Jan 2021 20:29 #195823 by tommylight
Replied by tommylight on topic Installing Linuxcnc on Chromebook.
hmmm....OpenGL stuff not working !
The only thing i can think of is turning on software rendering, but not sure if that helps. It does help in some rare cases for LinuxCNC.

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18 Jan 2021 20:29 #195824 by tommylight
Replied by tommylight on topic Installing Linuxcnc on Chromebook.
Did not see the reply, nice ! :)
The following user(s) said Thank You: rodw

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18 Jan 2021 20:32 #195826 by rodw
Replied by rodw on topic Installing Linuxcnc on Chromebook.
Thanks, Tommy, updated the first post with the added steps for qtvcp
The following user(s) said Thank You: tommylight

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18 Jan 2021 20:35 #195827 by tommylight
Replied by tommylight on topic Installing Linuxcnc on Chromebook.
And now ... drum roll please ... how's the latency? :)

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18 Jan 2021 20:51 #195829 by tommylight
Replied by tommylight on topic Installing Linuxcnc on Chromebook.
Shhhhhh do not tell Phill, but i did manage to massacre QTPlasmaC a bit to fit my 1920X1200 24" monitors:
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18 Jan 2021 21:16 #195834 by rodw
Replied by rodw on topic Installing Linuxcnc on Chromebook.

And now ... drum roll please ... how's the latency? :)


Absolutely awful! Strictly SIMS only! I can't see how you could actually control anything due to lack of outputs anyway.

I am not keen on touch screen monitors that size. I have one on my spaceship. Using Gmocappy is no fun as you need to move your hand too far form one control to the next. I really think the sweet spot is around 15-17" .... Like my 15.6" monitor adn I ma liking QTplasmac on that size which is the minimum resolution it supports.

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  1. LinuxCNC
  3. Installing LinuxCNC
  5. Installing Linuxcnc on Chromebook.
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