On Wed, Jan 19, 2022 at 08:17:11AM +0000, Serge Schneider wrote: > Package: freecad > Version: 0.19.1+dfsg1-2 > Severity: important > X-Debbugs-Cc: [email protected] > > Dear Maintainer, > > When running FreeCAD, creating a new file crashes with a segfault: (...)
> This is the same issue as #931458, which was closed because it was reported > against Raspbian's packages. However, the issue is reproducible in Debian > too (using 20210823_raspi_2_bullseye.img.xz). > > The crash seems to have something to do with how Ccoin3D creates the context > in Qt. > > Rebuilding FreeCAD against Qt4 rather than Qt5 makes it work. It also works > on arm64. > > The main difference I can see is that Qt is built with OpenGL support on > arm64, but only OpenGL ES support on armhf. > > Thegq issue has also been reported upstream at > https://tracker.freecadweb.org/view.php?id=4083, but there hasn't been any > progess in a few years. The discussion on the FreCAD forum (pointer to the thread is in the above FreeCAD ticket), namely the backtrace at https://forum.freecadweb.org/viewtopic.php?p=456568#p456568 hints that this crash is happening somewhere in libcoin: (IF the backtrace is related to what you see as well) It is calling out to libx11's XDefaultScreenOfDisplay() and it looks like that this might be a NULL-Pointer passed to that function... https://codesearch.debian.net/search?q=XScreenOfDisplay+package%3Alibx11&literal=0 That reminds me of https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=969230... Unfortunatly I do not have any Pi4 I could use for this to debug at my hands. However, you might want to see if cherry-picking the mentioned patch in #969230 (https://github.com/coin3d/coin/pull/404/files) and recompile the coin3 Debian package locally with that patch.. Maybe this does something for you and helps pin-pointing the problem. -- tobi > -- System Information: > Debian Release: 11.0 > APT prefers stable-security > APT policy: (500, 'stable-security'), (500, 'stable') > Architecture: armhf (armv7l) > > Kernel: Linux 5.10.0-8-armmp (SMP w/4 CPU threads) > Kernel taint flags: TAINT_CRAP, TAINT_UNSIGNED_MODULE > Locale: LANG=C, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set > Shell: /bin/sh linked to /usr/bin/dash > Init: systemd (via /run/systemd/system) > LSM: AppArmor: enabled > > Versions of packages freecad depends on: > ii freecad-python3 0.19.1+dfsg1-2 > > Versions of packages freecad recommends: > ii calculix-ccx 2.17-3 > ii graphviz 2.42.2-5 > > Versions of packages freecad suggests: > pn povray <none> > > -- no debconf information
