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I am looking for help to try and fix this problem,
My Linux computer complaint is :

Could not load the Qt platform plugin "xcb" in "" even though it was found.

Indications are this is a library problem with python on Linux .

I have seen others solve this problem but they use developer tools not
available to me.

Still not able to load nanoVNA-saver on any of my Linux computers. (Ubbuntu
XFCE and Mint XFCE ) If you have nanoVNA-saver running on your Linux
computer please tell me what "desktop" version of Linux you are using ?? I
am using XFCE and it does not appear to support nanoVNA-saver.

Thanks in advance,

Nels

--




n_n

I am using Linux Mint Tina and it works well.

I am using it on Linux Mint Cinnamon 19.1 NanoVNA version 0.2.0 and it
works fine.

Dave
N2VUZ

On 11/17/19 11:44 AM, Nels Nelsen wrote:

I have seen others solve this problem but they use developer tools not
available to me.

Still not able to load nanoVNA-saver on any of my Linux computers. (Ubbuntu
XFCE and Mint XFCE ) If you have nanoVNA-saver running on your Linux
computer please tell me what "desktop" version of Linux you are using ??

???? The most recent version of nanoVNA-saver runs fine on Linux Mint 19.1 Cinnamon.? Most development tools are available for everyone.

Doesn't work on my Linux Mint 18.3 cinnamon with Python 3.6.
Python has to be updated to 3.7. I tried that before, but other apps stopped working then. So I rolled back to 3.6

Carsten

Works fine here on Linux Mint 19.2 amd64 with python 3.7 per instructions here...



Note nvna-s requires python 3.7. Not earlier versions.

Looks like some good advice here...



for troubleshooting this problem.

You could start with

$ export QT_DEBUG_PLUGINS=1

and see what that tells you.

On my Mint system there was a 3.7 lite package that would install alongside 3.6 and leave? 3.6 as the default version.? nanoVNA-saver worked fine with that package and it didn't mess up other python apps.

Fine under Ubuntu 19.10 and Mate desktop.
Also never could get it to run under XFCE4.

A few months ago I managed to get nanoVNA-saver running using the instructions on Rune's Github page.
This was on a Linux Mint 18.3 machine and Cinnamon.

Then I had a catasrophic PC failure, known as the laptop hinges finally failing after 6 years.

Built a new machine, but it failed, erors about no pip modules and qt5 stuff.

But they were there, so I was baffled.

But, now some of you guys are mentioning what desktops seem to run OK etc.

I now remember that I also had the Mate desktop installed on that LM 18.3 machine, so I'm now wondering if there
were additional files installed with that, which allowed it work on Cinnamon.

Lack of time to test the theory, but it's a thought.

73 de Andy

Runs OK for me with Debian 9 and XFCE, but I did follow the installation
instructions and carefully installed all the recommended support.


On Tue, Nov 19, 2019 at 2:51 PM Andy via Groups.Io <punkbiscuit=
[email protected]> wrote:

A few months ago I managed to get nanoVNA-saver running using the
instructions on Rune's Github page.
This was on a Linux Mint 18.3 machine and Cinnamon.

Then I had a catasrophic PC failure, known as the laptop hinges finally
failing after 6 years.

Built a new machine, but it failed, erors about no pip modules and qt5
stuff.

But they were there, so I was baffled.

But, now some of you guys are mentioning what desktops seem to run OK etc.

I now remember that I also had the Mate desktop installed on that LM 18.3
machine, so I'm now wondering if there
were additional files installed with that, which allowed it work on
Cinnamon.

Lack of time to test the theory, but it's a thought.

73 de Andy

On Tue, Nov 19, 2019 at 02:51 PM, Andy wrote:

I now remember that I also had the Mate desktop installed on that LM 18.3
machine, so I'm now wondering if there
were additional files installed with that, which allowed it work on Cinnamon.

Darn, I just tried it, and failed.

Everything appears to be installed if I follow the messages.

Same old story, NVNA-S complains about pyqt5 or pip.
Install the required.
Console tells me they are there, nothing to install.
Back to square one.

I seem to have a lot of issues with Python stuff in the past, and getting disillusioned with anything Python related.
From now on, if something is going to work then fine, but life's too short for Python stuff if it don't from now on.
I can think of a more productive way of life than chasing Python errors.

73 de Andy

Very interesting!

I had essentially the same problem trying to run nanovnasaver on Windows Vista and was assured that i I installed Linux, I'd be golden! But I have already installed Linux and tried it a bit. Maybe fine for a trained I.T. person!

Doug

It's Python that's a mess, as bad as java.

It promises app portability, and its anything but.

We need something like good old QBASIC, where we can load source into an interpreter and run it.

Python and java are one big con.

I wouldn't go as far as qbasic but I agree, whenever I see 'python' I
anticipate frustration and trouble. It's a mess. It's a great example of
why code re-use doesn't scale well. All too often it's hailed as the
platform for everything but the cracks are showing.

I was actually pleasantly surprised by how easily nanovna-saver ran for me
, so congrats to somebody for that.


On Tue, Nov 19, 2019 at 4:49 PM Andy via Groups.Io <punkbiscuit=
[email protected]> wrote:

It's Python that's a mess, as bad as java.

It promises app portability, and its anything but.

We need something like good old QBASIC, where we can load source into an
interpreter and run it.

Python and java are one big con.

On 11/19/19 8:22 AM, DougVL wrote:

But I have already installed Linux and tried it a bit. Maybe fine for a trained I.T. person!

???? Interesting.? I am not a trained I.T.person, have been using Linux since 2002, and have had pretty much no problems with it at all.? I do, however, find Windows to be a royal PITA, on those rare occasions when I have the misfortune to have to use it. Also, I attend the computer club meetings at the local senior center, and I am constantly amazed at the problems those Windows users tolerate.? Different strokes for different folks, I guess. I had no? problems installing NanoVNA-saver on my Linux system.

I have a Win7 laptop running nanovna-saver but I don't want to use it any longer caus of the license strategies of microsoft.
So I tried to meet all the requirements in my old Linux Mint 18.3 cinnamon (= Ubuntu 16.04 Xenial) I know the prerequisites are Ubuntu 18 or 19, anyway...
but if it comes to the "python3.7 -m pip install ." it makes the following error:
Processing /home/user/nanovna-saver
Collecting pyserial (from NanoVNASaver===0.2.0)
Using cached
Collecting PyQt5>=5.11.2 (from NanoVNASaver===0.2.0)
Could not find a version that satisfied requirement PyQt5>=5.11.2 .....
No matching distribution found for PyQT5>=5.11.2 .....

I have Python 2.7.12, 3.5.2 and 3.7.5 installed, Qt5.11.2 was update via repository (from 5.5)

I tried to meet all the requirements in my old Linux Mint 18.3 cinnamon
(= Ubuntu 16.04 Xenial) I know the prerequisites are Ubuntu 18 or 19, anyway...
but if it comes to the "python3.7 -m pip install ."
it makes the following error:

"because Mint is written partially in Python,
it's not good to modify the global version of python too much"

I have Python 2.7.12, 3.5.2 and 3.7.5 installed,
Qt5.11.2 was update via repository (from 5.5)

"leave the system-default version alone"

Hi,
The "pip" command tries to install the dependencies from the "pypi"
repository - and PyQt5 is not available from there for 32bit Linux for some
reason. If you already have PyQt5 (not just Qt5) installed in the right
version, nanovna-saver should run fine, despite it not installing via pip.

--
Rune / 5Q5R

Hi,
Like others, I am having problems with Python PyQt5 etc. I am trying to get NanoVNA to run with a Raspberry Pi 4 with very little success. Works perfect on the Mac Pro. Do you or others know of a work around for this excellent program to work on this platform? Any advice would be much appreciated.
73
G8ORE