OpenGL axis error on Compaq Evo N610c

Sorry, I hadn't read your original description in full detail.

I wonder if the softwareGL drivers are actually compatible with the OS you are running?

No worries.

It's possible there is compatibility issues...that particular package skips over stretch - without pinning I would not have access to it - but the same can be said of many LinuxCNC dependencies. Then again, it is in unstable packaged as the same version as oldstable (jessie) so if it does not work for stretch, I suppose it would not work for unstable either (thus pending package cleanup).

Is there a good test to find out? I tried glxgears before and got 150FPS (but I am not sure if it was lying or not), nor did I know its method of render (except that CPU spiked during the process).

Package libgl1-mesa-swx11
wheezy (oldoldstable) (libs): free implementation of the OpenGL API -- runtime
8.0.5-4+deb7u2: amd64 armel armhf i386 ia64 kfreebsd-amd64 kfreebsd-i386 mips mipsel powerpc s390 s390x sparc
jessie (oldstable) (libs): free implementation of the OpenGL API -- runtime
10.3.2-1+deb8u1: amd64 arm64 armel armhf i386 mips mipsel powerpc ppc64el s390x
sid (unstable) (libs): free implementation of the OpenGL API -- runtime
10.3.2-1 [debports]: arm64

I am wondering if I am missing any Tkinter libs at this point.

I tried a couple other GUIs with success, and also some python OpenGL tests were successful. Seems like mixing those two with Tkinter is making the issue.

I found an example outside of LinuxCNC but needed Python 3. I will keep looking.

UPDATE:
So, based on the Linux Mint install post and pulling all my apt-selections, I am still missing these packages:

texlive-font-utils libxaw7-dev libncurses-dev libreadline-gplv2-dev dblatex groff python-dev libglu1-mesa-dev libgtk2.0-dev libboost-python-dev texlive-lang-cyrillic texlive-lang-french texlive-lang-spanish texlive-lang-german libmodbus-dev dvipng libusb-1.0-0-dev inkscape

I foresee dependency issues, but I will install them, even if it has to be one by one.

EDIT 2:

Adding the packages above did not seem to help the cause.

I did find this unanswered thread that contains the same error message, down to the "_tkinter.TclError: NULL main window" which isn't common to see. The other situation I saw it was a StackExchange question that was about errorenous coding for python3. So that does not help.

I think I got it.

Looks like I had to compile from source, and I followed the attachment from the admin's Mint post .

It downgrades the kernel (and I have not yet rebooted since the compile), but all looks well thus far, especially under hw acceleration.

Cheers.