GTK apps are breaking this because at-spi2-core is calling XCloseDisplay, not because of XGetWindowProperty.
I tried commenting (https://git.gnome.org/browse/at-spi2-core/tree/atspi /atspi-misc.c#n1456, XGetWindowProperty call) and this bug still occurred. Then I tried commenting (https://git.gnome.org/browse/at- spi2-core/tree/atspi/atspi-misc.c#n1462, XCloseDisplay call) and it allows GTK apps to run without crashing XMir. Aside, to run GTK apps under XMir, pass the display name as a command line argument (--display :1) instead of setting DISPLAY/AT_SPI_DISPLAY. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1481330 Title: Reading/setting xprop on Xmir causes it to crash Status in mir package in Ubuntu: New Status in xorg-server package in Ubuntu: New Bug description: When having an Xmir window up and running and then trying to read or set an xprop, the Xmir window immediately exits. This is what is printed in application's upstart log: (EE) Fatal server error: (EE) Failed to connect to Mir: Failed to process connect response: /build/mir-3eDTxk/mir-0.14.0+15.10.20150723.1/src/client/probing_client_platform_factory.cpp(37): Throw in function virtual std::shared_ptr<mir::client::ClientPlatform> mir::client::ProbingClientPlatformFactory::create_client_platform(mir::client::ClientContext*) Dynamic exception type: N5boost16exception_detail10clone_implINS0_19error_info_injectorISt13runtime_errorEEEE std::exception::what: No appropriate client platform module found (EE) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mir/+bug/1481330/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
