LinuxCNC on Linux Mint 20 quick and nearly easy install

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24 Aug 2020 17:50 #179263 by tommylight

franstrein wrote: Maybe I found the answer....
Should I install this package:
packages.debian.org/stretch/kernel/linux...rs-4.9.0-13-rt-amd64

Will try this tonight..
Frans

Yes you can safely install that package and check if you can make the wifi work, although i would just ditch the wifi, but since the new installation procedure (if anything goes wrong) is short, give it a try.

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25 Aug 2020 10:37 #179338 by rodw
I personally would through that Tplink wifi dongle as far as I could throw it. The Asus Nano is cheap as chips and works out of the box as far back as Mint 17.3 as do most other wifi dongles. I have not had a good run with TPLINK

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25 Aug 2020 11:08 #179344 by tommylight
I use a lot of TPlink ones and have no issues besides a very weak signal compared to built in cards on my laptops.
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25 Aug 2020 12:35 - 25 Aug 2020 12:36 #179370 by franstrein
Hi all,

Thanks for your responses on the TP Link WiFi USB adapter.
I finally got it to work, using the links I referred to above (installing the correct Linux Headers and using dkms scripts to install and build the module).
It took a lot of steps to add the dependent packages, and also to get the right version of the RTL8812au module active in my system.
But at the end it worked. I need to verify whether I didn't break anything else in my system, and I will capture my steps for future usage.

Frans
Last edit: 25 Aug 2020 12:36 by franstrein.

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25 Aug 2020 12:42 #179372 by zfa
Hello, my name is Rudolf and I installed everything as written on the first side of this thread, but whenever I start with the "Linux Mint 20 Xfce, with Linux 4.9.0-13-rt-amd64" Kernel the display resolution is 800x600.
I cannot mend this, has anyone an idea to solve this problem?

Further Infos:
The RT-Kernel and LCNC are working fine.
Motherboard: J4005B-ITX, graphic card onboard
CPU: Intel Celeron J4005, 2x 2.00GHz, 4MB Cache, 10W TDP

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25 Aug 2020 14:05 #179392 by tommylight
What does
xrandr
in a terminal say?

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25 Aug 2020 14:24 - 25 Aug 2020 14:56 #179395 by zfa

tommylight wrote: What does
xrandr
in a terminal say?

Okay, I opened terminal and "xrandr" says following:

xrandr: Failed to get size of gamma for output default
Screen 0: minimum 800 x 600, current 800 x 600, maximum 800 x 600
default connected 800x600+0+0 0mm x 0mm
800x600 75.00*
Last edit: 25 Aug 2020 14:56 by zfa.

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25 Aug 2020 16:16 #179402 by tommylight
Try this:
sudo apt update
-
wget http://http.us.debian.org/debian/pool/main/l/linux-signed-amd64/linux-image-5.4.0-0.bpo.4-rt-amd64_5.4.19-1~bpo10+1_amd64.deb
-
sudo gdebi linux-image-5.4.0-0.bpo.4-rt-amd64_5.4.19-1~bpo10+1_amd64.deb
Reboot. See if the video works.
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26 Aug 2020 10:56 - 26 Aug 2020 11:27 #179508 by zfa
... yes now it works!
But whenever I restart, the old display resolution 800x600 again is present.

...no it works, there is a new kernel (5.4.0-0.bpo.4-rt) now isnt it? With the new kernel it works....
Last edit: 26 Aug 2020 11:27 by zfa.
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28 Aug 2020 23:29 - 28 Aug 2020 23:33 #179888 by beatnic
So far so good. I haven't tried to run my mill, but all the software is in place. I'm using the same machine. I saved the configuration files before the install. If I put them back in my home directory will the new install pick up the old settings?

Also should I do updates in the LinuxCNC kernel?
Last edit: 28 Aug 2020 23:33 by beatnic. Reason: I forgot something

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