Per the debian-devel-announce message, please make sure your X libraries are up to date. If you can still reproduce the problem, can you supply a backtrace?
-- xcb_xlib.c:50: xcb_xlib_unlock: Assertion `c->xlib.lock' failed. https://bugs.launchpad.net/bugs/87947 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs