MEDM update needed; MEDM 3.1.15 crashes on plot screens

[tguruswamy]

MEDM 3.1.15 sometimes crashes on opening MCA displays due to a known bug fixed in 3.1.17: https://github.com/epics-extensions/medm/releases

$ run_medm.sh 

MEDM Version 3.1.15: Loading aliased fonts.................

SIGSEGV
/home/xspress3/epics/bin/run_medm.sh: line 2:  5405 Aborted                 (core dumped) /home/xspress3/epics/bin/medm -x -macro "P=S4QX4" /home/xspress3/epics/adls/xspress3_4chan.adl

Replacing the medm binary with a build of the current MEDM 3.1.20 fixes this crash.

Suggest updating the version of MEDM installed by build_xspress3.py .

[newville]

@tguruswamy Sorry for the trouble... I don't think I've ever seen MEDM crash, but I'll look into it.

[TomQD-94]

We notice this on our systems. Is there a chance this could get updated in the next release?

[newville]

@tguruswamy @TomQD-94 would it be OK to encourage (and enable build_xspress3.py) to install and run Phoebus? I think that trying to chase down odd X/Motif errors in ancient MEDM on modern systems (maybe even using Wayland??) is a losing prospect.

I don't love the plots with Phoebus (I never loved anything about EDM or MEDM), but the controls are fine, and the tabbed browsing is very nice.

And also: At your request, I recently made it is easier to not install the wxPython view/controller. If we are worrying about installing display screens, I think that will get equal attention from me.