qtdragon crash during 3d viewer translation (QTvcp ERROR! Message # 1)

Hi, 

I'm a new user of LinuxCNC, and want to try the qtdragon interface.
I made a recent LinuxCNC installation using the downloadable image.

The problem is that the interface crash when I try to translate the 3d viewer.
In addition :

• Only the qtdragon and qtdragon_hd seems to have the problem, all the other interfaces I tried (provided with linuxcnc) are working normally.
• Only the translation (left mouse + drag) crash. Sometime immediately, sometime after 1-2 move.
• Zoom and rotation works normally.

ThanksTraceback (most recent call last):File "/usr/lib/python3/dist-packages/qt5_graphics.py", line 1057, in mouseMoveEventself.translateOrRotate(event.pos().x(), event.pos().y())File "/usr/lib/python3/dist-packages/glnav.py", line 374, in translateOrRotateself.translate(x, y)File "/usr/lib/python3/dist-packages/glnav.py", line 319, in translatewin = gluProject( obj_c[0], obj_c[1], obj_c[2])^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^File "/usr/lib/python3/dist-packages/OpenGL/latebind.py", line 63, in __call__return self.wrapperFunction( self.baseFunction, *args, **named )^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^File "/usr/lib/python3/dist-packages/OpenGL/GLU/projection.py", line 34, in gluProjectraise ValueError( """Projection failed!""" )ValueError: Projection failed!

Use AXIS at first; there's a reason it's the default.

It is easy for inexperienced users.

What version are you using?

Perhaps you have an OpenGL issue of some sort.

Does glxgears work (well)?

Coming from Mach3, QtDragon felt more natural.

After, if it is not working... I might have to try another one.

glxgears works perfectly. That was part of the validation I made for the latency.

Tonight I asked chatGPT (not my first reflex).

It proposed to try running "LIBGL_ALWAYS_SOFTWARE=1 linuxcnc" to disable the GPU rendering (use software rendering) from what I understand.

And you know what... it worked!

To make the change permanent, I added "export LIBGL_ALWAYS_SOFTWARE=1" to the usr/bin/linuxcnc

Unless somebody has an idea of the real root cause. Now it is working. Probably not exploiting my GPU, but don't seems to cause problem.

Thanks!

langdons wrote:

Use AXIS at first; there's a reason it's the default.

It is easy for inexperienced users.

What version are you using?
 

Please quit giving this advice.
If there are bugs in other screens we want to know so we can fix them.

I am glad you got this working.
What version of linuxcnc are you using?
I feel we had this or a similar problem a while back.

I tried it like 2 weeks ago for the first time, it was on 2.9.6
I upgraded to 2.9.7 this week.
Both version had the same problem.

Software rendering should not be a long-term solution.

Please post output of glxgears -info.

I love those good ol' X apps like glxgears; they are simple, yet suprisingly powerful.


Could you test on 2.9.4 or something by chance?

Perhaps this is a new regression; GPUs, especially NVIDIA, are often unsupported by newer versions of GNU/Linux (and FreeBSD too).