As a workaround you can run Mir natively using the option: --vt 1 Then just switch to it with Ctrl+Alt+F1/F7
** Summary changed: - mir_proving_server assert failure: mir_proving_server: ../../src/xcb_io.c:274: poll_for_event: Assertion `!xcb_xlib_threads_sequence_lost' failed. + Mir on X11 server crashed: mir_proving_server: ../../src/xcb_io.c:274: poll_for_event: Assertion `!xcb_xlib_threads_sequence_lost' failed. ** Information type changed from Private to Public ** Also affects: mir Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to mir in Ubuntu. https://bugs.launchpad.net/bugs/1497547 Title: Mir on X11 server crashed: mir_proving_server: ../../src/xcb_io.c:274: poll_for_event: Assertion `!xcb_xlib_threads_sequence_lost' failed. Status in Mir: New Status in mir package in Ubuntu: New Bug description: mir_proving_server assert failure: mir_proving_server: ../../src/xcb_io.c:274: poll_for_event: Assertion `!xcb_xlib_threads_sequence_lost' failed. mousing arround with mir on x mir_proving_server --platform-input-lib server-mesa-x11.so.4 mir_demo_client_egltriangle died wile mousing arround egltriangle's window ProblemType: Crash DistroRelease: Ubuntu 15.10 Package: mir-demos 0.15.1+15.10.20150903-0ubuntu1 ProcVersionSignature: Ubuntu 4.2.0-10.11-generic 4.2.0 Uname: Linux 4.2.0-10-generic x86_64 ApportVersion: 2.18.1-0ubuntu1 Architecture: amd64 AssertionMessage: mir_proving_server: ../../src/xcb_io.c:274: poll_for_event: Assertion `!xcb_xlib_threads_sequence_lost' failed. CurrentDesktop: Unity Date: Sat Sep 19 15:13:02 2015 ExecutablePath: /usr/bin/mir_proving_server InstallationDate: Installed on 2015-09-18 (0 days ago) InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20150918) ProcCmdline: mir_proving_server --platform-input-lib server-mesa-x11.so.4 Signal: 6 SourcePackage: mir StacktraceTop: __assert_fail_base (fmt=0x7fbfd6d7c028 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=assertion@entry=0x7fbfd294a7a0 "!xcb_xlib_threads_sequence_lost", file=file@entry=0x7fbfd294a5eb "../../src/xcb_io.c", line=line@entry=274, function=function@entry=0x7fbfd294aaa6 "poll_for_event") at assert.c:92 __GI___assert_fail (assertion=0x7fbfd294a7a0 "!xcb_xlib_threads_sequence_lost", file=0x7fbfd294a5eb "../../src/xcb_io.c", line=274, function=0x7fbfd294aaa6 "poll_for_event") at assert.c:101 ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6 ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6 _XReadEvents () from /usr/lib/x86_64-linux-gnu/libX11.so.6 Title: mir_proving_server assert failure: mir_proving_server: ../../src/xcb_io.c:274: poll_for_event: Assertion `!xcb_xlib_threads_sequence_lost' failed. UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo To manage notifications about this bug go to: https://bugs.launchpad.net/mir/+bug/1497547/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp