Hi Using the following 2.6.23.1-49.fc8 #1 SMP Thu Nov 8 22:14:09 EST 2007 x86_64 xorg-x11-server-Xnest-1.3.0.0-33.fc8.x86_64 kdebase-3.5.8-5.fc8.x86_64 qt-3.3.8-9.fc8.x86_64 I have edited /etc/X11/xdm/Xaccess and uncommented the "*" * #Any host can get a login window and /etc/X11/xdm/kdmrc Under Xdmcp Enable=true ------------------------------------------------------ I get a fatal crash when using Xnest to connect to localhost Xnest :2 -query localhost The same occurs when connecting from another machine Xnest :2 -query fuerte A window shows "The application unknown (kdmgreet) crashed and caused signal 6 SIGABRT" The crash file is shown below Has anyone seen this? Should I report it to Fedora bugzilla or elsewhere? ------------------------------------------------------- In addition using X -query also fails but in a different way Probably a permissions/access problem X :2 -query localhost gives the kdm login screen and name and passwd can be entered but the kde login screen is then repeated ..... Which secret file do I need to edit ? ------------------------------------------------------- Thanks John ------------------------------------------------------- cat 6BpDCb.kcrash (no debugging symbols found) Using host libthread_db library "/lib64/libthread_db.so.1". (no debugging symbols found) ... (no debugging symbols found) [Thread debugging using libthread_db enabled] [New Thread 46912496387520 (LWP 4210)] (no debugging symbols found) ... (no debugging symbols found) [KCrash handler] #5 0x00000037ba630ec5 in raise () from /lib64/libc.so.6 #6 0x00000037ba632970 in abort () from /lib64/libc.so.6 #7 0x00000037ba62a11f in __assert_fail () from /lib64/libc.so.6 #8 0x00000037bbe00848 in xcb_xlib_lock () from /usr/lib64/libxcb-xlib.so.0 #9 0x00000037bc64a1d3 in QWidget::setUpdatesEnabled () from /usr/lib64/libX11.so.6 #10 0x00000037bc62675a in XFreeCursor () from /usr/lib64/libX11.so.6 #11 0x00000037c28a998a in QCursorData::~QCursorData () from /usr/lib64/qt-3.3/lib/libqt-mt.so.3 #12 0x00000037c28a9b1e in QCursor::~QCursor () from /usr/lib64/qt-3.3/lib/libqt-mt.so.3 #13 0x00000037c28a9b50 in QWidget::setUpdatesEnabled () from /usr/lib64/qt-3.3/lib/libqt-mt.so.3 #14 0x00000037ba63432d in __cxa_finalize () from /lib64/libc.so.6 #15 0x00000037c2890416 in QWidget::setUpdatesEnabled () from /usr/lib64/qt-3.3/lib/libqt-mt.so.3 #16 0x00000037b961b000 in ?? () from /lib64/ld-linux-x86-64.so.2 #17 0x00007fff84906c00 in ?? () #18 0x00007fff84902b50 in ?? () #19 0x00000037c2ccd1d1 in _fini () from /usr/lib64/qt-3.3/lib/libqt-mt.so.3 #20 0x0000000000000000 in ?? ()