This bug has been triaged as "incomplete". Please tell us what additional information is needed.
As a hint, here's one suspicious error reported by valgrind on the example above: ==9600== Syscall param writev(vector[...]) points to uninitialised byte(s) ==9600== at 0x790784C: writev (in /lib/libc-2.7.so) ==9600== by 0xAF83365: (within /usr/lib/libxcb.so.1.0.0) ==9600== by 0xAF838EA: (within /usr/lib/libxcb.so.1.0.0) ==9600== by 0xAF83A1C: (within /usr/lib/libxcb.so.1.0.0) ==9600== by 0xAF84DB5: xcb_wait_for_reply (in /usr/lib/libxcb.so.1.0.0) ==9600== by 0x7DF1F77: _XReply (in /usr/lib/libX11.so.6.2.0) ==9600== by 0x7DD0B3C: XGetWindowProperty (in /usr/lib/libX11.so.6.2.0) ==9600== by 0x7DCFCFC: XGetWMHints (in /usr/lib/libX11.so.6.2.0) ==9600== by 0x5EA1B16: QWidgetPrivate::setWindowIcon_sys(bool) (in /usr/lib/libQtGui.so.4.4.0) ==9600== by 0x5E71EDF: QWidget::create(unsigned long, bool, bool) (in /usr/lib/libQtGui.so.4.4.0) ==9600== by 0x5E72CEA: QWidget::winId() const (in /usr/lib/libQtGui.so.4.4.0) ==9600== by 0x5A23E94: QGLWidget::setContext(QGLContext*, QGLContext const*, bool) (in /usr/lib/libQtOpenGL.so.4.4.0) ==9600== by 0x59FCFF6: (within /usr/lib/libQtOpenGL.so.4.4.0) ==9600== by 0x5A24F69: (within /usr/lib/libQtOpenGL.so.4.4.0) ==9600== by 0x59FD796: QGLWidget::QGLWidget(QWidget*, QGLWidget const*, QFlags<Qt::WindowType>) (in /usr/lib/libQtOpenGL.so.4.4.0) ==9600== Address 0xc03d49f is 7,111 bytes inside a block of size 8,680 alloc'd ==9600== at 0x4C220BC: calloc (vg_replace_malloc.c:397) ==9600== by 0xAF8357E: xcb_connect_to_fd (in /usr/lib/libxcb.so.1.0.0) ==9600== by 0xAF85ADF: xcb_connect (in /usr/lib/libxcb.so.1.0.0) ==9600== by 0x7DF1529: _XConnectXCB (in /usr/lib/libX11.so.6.2.0) ==9600== by 0x7DDA7C5: XOpenDisplay (in /usr/lib/libX11.so.6.2.0) ==9600== by 0x5E8C795: (within /usr/lib/libQtGui.so.4.4.0) ==9600== by 0x5E2F146: QApplicationPrivate::construct(_XDisplay*, unsigned long, unsigned long) (in /usr/lib/libQtGui.so.4.4.0) ==9600== by 0x5E2FF71: QApplication::QApplication(int&, char**, int) (in /usr/lib/libQtGui.so.4.4.0) ==9600== by 0x4114BB: main (main.cpp:13) As I don't happen to have the sources of Qt and X11, I can tell what's going on, but it seems that Qt is writing right into a X11 structure, which looks a bad idea. -- compiz crashes randomly when using a Qt OpenGL Widget https://bugs.launchpad.net/bugs/204238 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
