With GSK_BACKEND=cairo, the test works; setting it to either gl, opengl or vulkan, it hangs.
https://docs.gtk.org/gtk4/running.html -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to mesa in Ubuntu. https://bugs.launchpad.net/bugs/2119291 Title: mesa 25.0.7 SRU breaks gtk4 on s390x To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gtk4/+bug/2119291/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp

