Help me install on Raspbian 10 - via Rasberry Pi 3B

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23 Aug 2021 19:18 #218537 by dudesquat
I'm following the instructions here which I think are out of date:
linuxcnc.org/docs/html/getting-started/g...lling_on_raspbian_10

After adding the key, then the repo and doing an apt-get update, this happens:

root@raspberrypi:/home/pi# sudo apt-key adv --keyserver hkp://keys.openpgp.org --recv-key 3cb9fd148f374fef

Executing: /tmp/apt-key-gpghome.HaA1MP2Wl8/gpg.1.sh --keyserver hkp://keys.openpgp.org --recv-key 3cb9fd148f374fef
gpg: key 3CB9FD148F374FEF: new key but contains no user ID - skipped
gpg: Total number processed: 1
gpg:           w/o user IDs: 1
root@raspberrypi:/home/pi#
root@raspberrypi:/home/pi# sudo apt-get update
Get:1 linuxcnc.org buster InRelease [28.5 kB]
Hit:2 archive.raspberrypi.org/debian buster InRelease
Hit:3 raspbian.raspberrypi.org/raspbian buster InRelease
Err:1 linuxcnc.org buster InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 3CB9FD148F374FEF
Reading package lists... Done
W: GPG error: linuxcnc.org buster InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 3CB9FD148F374FEF
E: The repository 'linuxcnc.org buster InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
root@raspberrypi:/home/pi#


Help please!

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23 Aug 2021 22:04 #218554 by tommylight
That seems to be the wrong key, where did you get that from so we can remove it?
Try these
forum.linuxcnc.org/38-general-linuxcnc-q...-05?start=280#212635

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23 Aug 2021 23:18 #218562 by dudesquat
linuxcnc.org/docs/html/getting-started/g...lling_on_raspbian_10

Within this URL.

I'm still not sure what to do. Are these URLs correct in that same link?

Is it even possible to install Linux CnC on Raspbian?

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23 Aug 2021 23:26 #218563 by tommylight
Thank you, info seems to be recent so i am not sure exactly what is correct, maybe someone else can shed more light on this?
There should be some ready made images for RPI4 (some mention RPI3 also), but since i never used them i will refrain from "helping". :)
Sorry.

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24 Aug 2021 04:16 #218583 by dudesquat
No problem, amgio. Thank for the info.

I suck at linux and this is linux basics stuff so some linux geek might have pity on me and give me a hand.
The following user(s) said Thank You: tommylight

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25 Aug 2021 23:29 #218741 by cakeslob

No problem, amgio. Thank for the info.

I suck at linux and this is linux basics stuff so some linux geek might have pity on me and give me a hand.


Sorry, I dont have any pity, but I do have empathy because linux is hard.
linuxcnc.org/docs/html/getting-started/g...tml#_normal_download
I will suggest downloading the pre-made image for rpi. Keyserver, I dont know what it is exactly, but i can assume it has to do with apt-get update.

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26 Aug 2021 14:57 - 26 Aug 2021 15:24 #218808 by elovalvo

 

I think the solution to the problem can be found in this link:

stackoverflow.com/questions/1139127/how-...public-key-is-not-av
Last edit: 26 Aug 2021 15:24 by elovalvo.

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01 Sep 2021 22:10 #219367 by andypugh
Did you get this sorted out? The keyservers are in a bit of a tangle right now, and it looks like we might have switched to one that doesn't respond in the way that apt wants it to.

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16 Nov 2021 00:59 #226616 by dgdodo
Yes, andypugh, I did.

Use the following just before sudo apt-get update:
--
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 3CB9FD148F374FEF
--

And sorry, I can NOT post my logs as there are too many links in it???

Regards, DG
(PS. This internal word-processor is weird, 1 word italic, next the whole rest of my message is italic? 1 rule quote, next whole text quoted ?  I'm getting weird too this way... Over half an hour to write this message, yes right ... )

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16 Nov 2021 17:44 #226665 by andypugh

(PS. This internal word-processor is weird,


It's worse than that, it's terrible.

I have found that the only way to use it is to click the <>Source button and put the tags in by hand.

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