// gui runs but as soon as any file is selected this happens

QOpenGLWidget: Failed to create context
QOpenGLWidget: Failed to create context
QXcbConnection: XCB error: 3 (BadWindow), sequence: 1085, resource id:
31461207, major code: 40 (TranslateCoords), minor code: 0
composeAndFlush: makeCurrent() failed
composeAndFlush: makeCurrent() failed
..

It looks like no window ever opens but... a frame is drawn and never painted
(so the canvas is a distorted frozen version of the background). when the
mosue moves over this frame "composeAndFlush: makeCurrent() failed" is
continually repeated.

Any clue as to what is happening here? or to a working solution?

Tried this as well:

gdebi will manage .deb dependencies

sudo apt-get install gdebi-core
wget http://ftp.us.debian.org/debian/pool/main/o/openscad/

openscad_2015.03-2+dfsg-2+b3_amd64.deb
sudo gdebi openscad_2015.03-2+dfsg-2+b3_amd64.deb

Same problem

So...if any of these are working for anyone else on ubuntu / kubunut 18.04 I'd
be interested - I simply don't know how to proceed with fixing this problem.

On Saturday, 13 October 2018 21:09:38 BST sasa wrote:

On 10/13/2018 10:24 PM, superaorta@gmail.com wrote:

I just built on a fresh kubuntu 18.04.1 VM and there's no problem.

Are you using some special graphics driver, like the NVIDIA blob?
Maybe try:

__GL_THREADED_OPTIMIZATIONS=0 openscad

See https://github.com/openscad/openscad/issues/1848 for more info
on that.

ciao,
Torsten.

Ok tried https://github.com/openscad/openscad/issues/1848

__GL_THREADED_OPTIMIZATIONS=0 openscad

and

LIBGL_ALWAYS_SOFTWARE=1 openscad

Both made no difference :(

I do have the nvidia driver loaded - I could try removing this for debug but I
guess LIBGL_ALWAYS_SOFTWARE=1 openscad covers that test already?

On Saturday, 13 October 2018 23:40:09 BST Torsten Paul wrote:

On 10/14/2018 01:52 AM, superaorta@gmail.com wrote:

It should, yes. But as it's currently unclear what's causing
the issue and it's not reproducible on a fresh install, it
might still be worth a try.

ciao,
Torsten.

Problem solved:

I don't know what the problem was but I started to get other related problems
with other software and got to thinking I'd had >60days uptime so rebooted and
now openscad (and the other stuff) has started working. My guess is a leak /
bug in nvidia or plasma is responsible. Given the length of time to manifest
itself I suspect debugging is practically impossible...

Thanks folks!

On Sunday, 14 October 2018 01:56:29 BST Torsten Paul wrote: