Here are my results without modification of your source: [mharris@xxxxxxxx mharris]$ cat /etc/redhat-release Red Hat Linux release 9 (Shrike) [mharris@xxxxxxxx mharris]$ rpm -q XFree86 XFree86-devel gcc XFree86-4.3.0-2 XFree86-devel-4.3.0-2 gcc-3.2.2-5 [mharris@xxxxxxxx mharris]$ cat foo.c #include <X11/extensions/XTest.h> #include <X11/keysym.h> int main(void) { Display* disp = XOpenDisplay(NULL); if (disp == NULL) return 1; XTestFakeKeyEvent(disp, XKeysymToKeycode(disp, XK_Num_Lock), True,CurrentTime); XTestFakeKeyEvent(disp, XKeysymToKeycode(disp, XK_Num_Lock), False,CurrentTime ); XCloseDisplay(disp); return 0; } [mharris@xxxxxxxx mharris]$ gcc -Wall -I /usr/X11R6/include -L /usr/X11R6/lib -lX11 -lXtst -o foo foo.c [mharris@xxxxxxxx mharris]$ file foo foo: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), for GNU/Linux 2.2.5, dynamically linked (uses shared libs), not stripped [mharris@xxxxxxxx mharris]$ ldd foo libX11.so.6 => /usr/X11R6/lib/libX11.so.6 (0x4002c000) libXtst.so.6 => /usr/X11R6/lib/libXtst.so.6 (0x4010b000) libc.so.6 => /lib/tls/libc.so.6 (0x42000000) libdl.so.2 => /lib/libdl.so.2 (0x40110000) libXext.so.6 => /usr/X11R6/lib/libXext.so.6 (0x40113000) /lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x40000000) I suggest reinstalling Red Hat Linux 9 from scratch, and not replacing any core system components with homebrew builds, as that is a likely source of problem. -- Mike A. Harris _______________________________________________ xfree86-list mailing list xfree86-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/xfree86-list IRC: #xfree86 on irc.redhat.com