Debian 12 and Lyx 2.3.7-1

[Peter]

Thanks for all the suggestions.  I have tried lots of window managers now and come to the end of time and energy. Need to get on with the work and stop tinkering.  I've created a new user and tried with that - didn't help.  I haven't found a different window manager I can live with that will run Lyx. ICEWM is the closest. I'll make one more effort, create a VM and try a clean Debian install, and if it works, use that.  And if that doesn't work, go back to Open Office.  Not great, but it can be made to do the job.

I'm starting to suspect it may have something to do with Wayland.  Or it could be NVidia as Steve suggests, at this point its beyond me. I have looked at Kile and Texworks but they both (esp Texworks) are a project in themselves to learn.  That was so nice about Lyx, I could just write, structure and then export.  It was great while it lasted.  

Just to reply on FLWM, I had tried the crystal version. So next tried the base version.  The base version does load but with lots of error messages which makes me nervous.  But I can't do with FLWM as my WM.

The second time I've been snookered by using a rather specialist authoring tool. The other was Scrivener, which was great - until they dropped Linux!

I'll give a new Debian VM a try and then have to give up.

Peter