This bug still persists on a freshly compiled spicec from current master (4e7d25a7ac). Please let me know how can I asist in getting to the bottom of this. Changing a WM is not a course I'd like to pursue.

Cheers

$ ./client/spicec --host 192.168.58.165 --port 5900
Error: x error on display :0.0 error BadMatch (invalid parameter attributes) minor 0 request X_SetInputFocus

$ ldd client/spicec 
	linux-gate.so.1 =>  (0xf773f000)
	libasound.so.2 => /usr/lib/i386-linux-gnu/libasound.so.2 (0xf762e000)
	libcelt051.so.0 => /usr/local/lib/libcelt051.so.0 (0xf761f000)
	libjpeg.so.8 => /usr/lib/i386-linux-gnu/libjpeg.so.8 (0xf75e5000)
	libXext.so.6 => /usr/lib/i386-linux-gnu/libXext.so.6 (0xf75d3000)
	libXrender.so.1 => /usr/lib/i386-linux-gnu/libXrender.so.1 (0xf75ca000)
	libX11.so.6 => /usr/lib/i386-linux-gnu/libX11.so.6 (0xf7492000)
	libpixman-1.so.0 => /usr/lib/i386-linux-gnu/libpixman-1.so.0 (0xf73fb000)
	librt.so.1 => /lib/i386-linux-gnu/i686/cmov/librt.so.1 (0xf73f1000)
	libssl.so.1.0.0 => /usr/lib/i386-linux-gnu/i686/cmov/libssl.so.1.0.0 (0xf739a000)
	libcrypto.so.1.0.0 => /usr/lib/i386-linux-gnu/i686/cmov/libcrypto.so.1.0.0 (0xf71db000)
	libXfixes.so.3 => /usr/lib/i386-linux-gnu/libXfixes.so.3 (0xf71d5000)
	libXrandr.so.2 => /usr/lib/i386-linux-gnu/libXrandr.so.2 (0xf71cd000)
	libz.so.1 => /lib/i386-linux-gnu/libz.so.1 (0xf71b3000)
	libXinerama.so.1 => /usr/lib/i386-linux-gnu/libXinerama.so.1 (0xf71b0000)
	libstdc++.so.6 => /usr/lib/i386-linux-gnu/libstdc++.so.6 (0xf70c4000)
	libm.so.6 => /lib/i386-linux-gnu/i686/cmov/libm.so.6 (0xf709e000)
	libgcc_s.so.1 => /lib/i386-linux-gnu/libgcc_s.so.1 (0xf7081000)
	libpthread.so.0 => /lib/i386-linux-gnu/i686/cmov/libpthread.so.0 (0xf7067000)
	libc.so.6 => /lib/i386-linux-gnu/i686/cmov/libc.so.6 (0xf6f0a000)
	libdl.so.2 => /lib/i386-linux-gnu/i686/cmov/libdl.so.2 (0xf6f06000)
	libxcb.so.1 => /usr/lib/i386-linux-gnu/libxcb.so.1 (0xf6ee3000)
	/lib/ld-linux.so.2 (0xf7740000)
	libXau.so.6 => /usr/lib/i386-linux-gnu/libXau.so.6 (0xf6edf000)
	libXdmcp.so.6 => /usr/lib/i386-linux-gnu/libXdmcp.so.6 (0xf6ed9000)

I'd recommend to switch to remote-viewer (from the virt-viewer package) as this is the client we support.

I second that recommendation. If you want to try to fix this, this seems to be the only place where we do a XSetInputFocus: (client/x11/red_window.cpp)

void RedWindow::activate()
{
    //todo: use _NET_ACTIVE_WINDOW
    XSetInputFocus(x_display, _win, RevertToParent, CurrentTime);
    /* kwin won't raise on focus */
    XRaiseWindow(x_display, _win);
}

Just hit same bug. Looks like it works ok when executed under strace. Maybe it just doing something "too fast"? :-/

(In reply to comment #4)
> Just hit same bug. Looks like it works ok when executed under strace. Maybe
> it just doing something "too fast"? :-/

From http://lxpanel.sourcearchive.com/documentation/0.5.5-1/taskbar_8c-source.html

      /* There is a race condition between the X server actually executing the XMapRaised and this code executing XSetInputFocus.
       * If the window is not viewable, the XSetInputFocus will fail with BadMatch. */

Actually, looks like commenting this line fix this issue. It's a VM window, we anyway many times enter/leave it, having to click before use isn't a big deal.

spicec is deprecated.

If you hit this bug, we highly recommended virt-viewer

http://virt-manager.org/download/
http://www.spice-space.org/download.html