Re: [QGIS-Developer] qgis4 segfaults with qt6 6.11.0, ok with 6.10.2
Hello, No problem on my side: QGIS 4.0.2-Norrköping Libraries Version de Qt 6.11.0 Version de Python 3.14.4 GDAL version 3.12.4 — Chicoutimi Version de Proj 9.8.1 Version de la base de données du registre EPSG v12.029 (2025-10-02) Version de GEOS 3.14.1-CAPI-1.20.5 SFCGAL version 2.2.0 GeographicLib version Pas de support Version de SQLite 3.53.0 Version de PDAL 2.9.3 Version du client PostgreSQL 18.3 Version de SpatiaLite 5.1.0 Version de QWT 6.3.0 Version de QScintilla2 2.14.1 Version de l'OS Manjaro Linux echo $XDG_SESSION_TYPE x11 No crash on opening a qgz/qgs project Best regards, --- Sylvain POULAIN > Le 13/05/2026 16:23 +04, Greg Troxel via QGIS-Developer > a écrit : > > > Richard Duivenvoorde writes: > > > I've succesfully compiled and ran QGIS4 with Qt 6.9.2 and 6.10.2 as those > > are available in Debian Testing. > > 4.0.0 and 4.0.2+18 both work with 6.10.2, except that they fail to find > the authentication provider. I suspect the authentication provider > problem is about some qt6 part not being in pkgsrc yet. > > > I think I've heard there were some issues with opening older project > > files in QGIS4, but as Qt6.10 is working that is probably not the > > issue here? > > 4.0.2+18/6.10.2 will open a project file and act normally while > 4.0.2+18/6.11.0 crashes on the same file. > > Starting without a project file is ok. > > Other complicated qt6-using programs work with 6.11.0 (on > NetBSD-current), according to others. > > > Can you create an issue maybe, preferably with a gdb trace on a debug > > build? Hopefully core devs have a clue then? > > I see from Andrea that osgeo4w has 4.0.2 with Qt 6.11.0, but I wonder > > does it work :-) ? > > surely that uses some different implementations than on POSIX, so > while it's a very helpful data point, I'm not sure what I can > conclude. > > I should mention that I'm using X11 (which I've been using since I > upgraded from X10!), given the "wayland is the answer, what was the > question" problems in some corners of the GNU/Linux world. > > Has anyone run qgis 4 with 6.11.x on POSIX with X11? > > Overnight, pkgsrc got qt6 6.11.1, changelog "bugfixes". I am updating > and will rebuild all and see how it goes. If still not ok, I'll flip to > debug builds and build qt6 and qgis again, so gdb can get better > backtraces, and file an issue. > ___ > QGIS-Developer mailing list > [email protected] > List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer ___ QGIS-Developer mailing list [email protected] List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer
Re: [QGIS-Developer] qgis4 segfaults with qt6 6.11.0, ok with 6.10.2
Richard Duivenvoorde writes: > I've succesfully compiled and ran QGIS4 with Qt 6.9.2 and 6.10.2 as those are > available in Debian Testing. 4.0.0 and 4.0.2+18 both work with 6.10.2, except that they fail to find the authentication provider. I suspect the authentication provider problem is about some qt6 part not being in pkgsrc yet. > I think I've heard there were some issues with opening older project > files in QGIS4, but as Qt6.10 is working that is probably not the > issue here? 4.0.2+18/6.10.2 will open a project file and act normally while 4.0.2+18/6.11.0 crashes on the same file. Starting without a project file is ok. Other complicated qt6-using programs work with 6.11.0 (on NetBSD-current), according to others. > Can you create an issue maybe, preferably with a gdb trace on a debug > build? Hopefully core devs have a clue then? I see from Andrea that osgeo4w has 4.0.2 with Qt 6.11.0, but I wonder does it work :-) ? surely that uses some different implementations than on POSIX, so while it's a very helpful data point, I'm not sure what I can conclude. I should mention that I'm using X11 (which I've been using since I upgraded from X10!), given the "wayland is the answer, what was the question" problems in some corners of the GNU/Linux world. Has anyone run qgis 4 with 6.11.x on POSIX with X11? Overnight, pkgsrc got qt6 6.11.1, changelog "bugfixes". I am updating and will rebuild all and see how it goes. If still not ok, I'll flip to debug builds and build qt6 and qgis again, so gdb can get better backtraces, and file an issue. ___ QGIS-Developer mailing list [email protected] List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer
Re: [QGIS-Developer] qgis4 segfaults with qt6 6.11.0, ok with 6.10.2
Il 13/05/2026 12:23, Richard Duivenvoorde via QGIS-Developer ha scritto: Not sure what is used for the Osgeo4W builds? Hi Richard and list, the latest QGIS 4.1.0-Master and QGIS 4.0.2 provided by OSGeo4W use Qt 6.11.0. Regards. Andrea ___ QGIS-Developer mailing list [email protected] List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer
Re: [QGIS-Developer] qgis4 segfaults with qt6 6.11.0, ok with 6.10.2
I've succesfully compiled and ran QGIS4 with Qt 6.9.2 and 6.10.2 as those are available in Debian Testing. The Flathub build is also on Qt 6.10: https://github.com/flathub/org.qgis.qgis/blob/master/org.qgis.qgis.json Qt 6.11 is not packaged so much apparently? Not sure what is used for the Osgeo4W builds? Maybe you are the first one to hit an issue? I think I've heard there were some issues with opening older project files in QGIS4, but as Qt6.10 is working that is probably not the issue here? Can you create an issue maybe, preferably with a gdb trace on a debug build? Hopefully core devs have a clue then? Regards, Richard Duivenvoorde On 5/12/26 00:12, Greg Troxel via QGIS-Developer wrote: Yesterday I wrote that starting up qgis 4.0.2(+18 commits) (from pkgsrc-wip/qgis) resulted in a crash. It turns out the thing that matters for crash vs works is not qgis version, but qt6 version. (This is all about qgis 4, because qgis 3.44 uses qt5 (and both qgis 3.44 and qt5 are apparently stable).) This is all on NetBSD 10 amd64. QGISQT RESULT 4.0.0 6.10.2 works 4.0.2 6.10.2 works 4.0.0 6.11.0 crashes on opening project file 4.0.2 6.11.0 crashes on opening project file Have other people tried to run qgis, or other complicated qt programs built against qt6 6.11.0? It looks to me like 6.11.0 redid a bunch of things and I'm guessing they broke things. But there could be a latent bug in qgis. ___ QGIS-Developer mailing list [email protected] List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer ___ QGIS-Developer mailing list [email protected] List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer
Re: [QGIS-Developer] qgis4 segfaults with qt6 6.11.0, ok with 6.10.2
Yesterday I wrote that starting up qgis 4.0.2(+18 commits) (from pkgsrc-wip/qgis) resulted in a crash. It turns out the thing that matters for crash vs works is not qgis version, but qt6 version. (This is all about qgis 4, because qgis 3.44 uses qt5 (and both qgis 3.44 and qt5 are apparently stable).) This is all on NetBSD 10 amd64. QGISQT RESULT 4.0.0 6.10.2 works 4.0.2 6.10.2 works 4.0.0 6.11.0 crashes on opening project file 4.0.2 6.11.0 crashes on opening project file Have other people tried to run qgis, or other complicated qt programs built against qt6 6.11.0? It looks to me like 6.11.0 redid a bunch of things and I'm guessing they broke things. But there could be a latent bug in qgis. ___ QGIS-Developer mailing list [email protected] List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer
