Kivy problem on fresh Debian 9 installation

Software
1

Hi,
I have an old computer that I want to run Ground Control with my Maslow CNC.
It´s a Debian 9 and I was following the instruction on how to install GC on Linux.

and

https://kivy.org/docs/installation/installation-linux.html

But I ran into an warning like this:

Reading package lists… Done
W: GPG error: http://ppa.launchpad.net/kivy-team/kivy/ubuntu xenial InRelease: The following signatures couldn’t be verified because the public key is not available: NO_PUBKEY A94F2C37A863D2D6
W: The repository ‘http://ppa.launchpad.net/kivy-team/kivy/ubuntu xenial InRelease’ is not signed.
N: Data from such a repository can’t be authenticated and is therefore potentially dangerous to use.

Did not want to continue. Anyone else got this problem?

1 Like
2

Oh wow,
Does this help? I have no idea to be fair.

Edit: The only Debian I have running is a Wheezy because of LinuxCNC :frowning:
Would you consider other Linux flavours for you old computer?
1 thing you need to check if the graphic chip supports OpenGL 2.0

3

Related question: what version(s) of kivy does Ground Control need?

If 1.9.1 is sufficient, then removing the ubuntu lines and simply using
apt install python-kivy
will work, as that release is in Debian 9 (stretch).

1 Like
4

Did you add the GPG key to your key ring?

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys A863D2D6

Do you see the Kivy PPA key listed when you run: apt-key list

1 Like
5

Should work just fine. Most of the early development was done on 1.9.1 and nothing has been added which I would expect give you trouble.

6

If I start CG on ubuntu-mate I see:
[INFO ] [Kivy ] v1.9.1
[INFO ] [Python ] v2.7.14 (default, Sep 23 2017, 22:06:14)

1 Like
7

@NorwegianWood

Are you married to Debian? Ubuntu 16.04 has been know to work. I have a linux for USB image desinged for old PCs with most everything setup in it under shared files on Disciples of CNC ( DO CNC)

https://www.disciplesofcnc.com

Get a free account and down load it - it needs a 1 gb or bigger USB drive. I find it hard to find anything smaller than 16 gb these days.

You will need to DL Ground Control, depending on your DL speed all told it might take 2hrs including the 3 DL needed.

Thank you

8

@NorwegianWood

I have added a Wiki entry on the Linux On USB here:

https://www.disciplesofcnc.com/wiki/pmwiki.php?n=Site.LinuxOnUSB

It has more detailed information.

Thank you

1 Like