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+graphic: 0.897
+permissions: 0.843
+semantic: 0.843
+architecture: 0.815
+assembly: 0.786
+performance: 0.773
+socket: 0.766
+peripherals: 0.763
+network: 0.753
+hypervisor: 0.737
+files: 0.736
+PID: 0.724
+register: 0.718
+user-level: 0.716
+debug: 0.713
+virtual: 0.703
+arm: 0.700
+kernel: 0.700
+KVM: 0.671
+TCG: 0.667
+ppc: 0.666
+device: 0.662
+boot: 0.651
+VMM: 0.613
+risc-v: 0.613
+vnc: 0.604
+x86: 0.598
+mistranslation: 0.589
+i386: 0.512
+
+Mouse works badly when connecting to host via vnc
+
+Let's assume we have some physical host A. This host runs qemu guest B locally without any options like "-vnc" etc.
+Then I connect from some physical host C to the host A via VNC or Teamviewer ( www.teamviewer.com ). And then I try to remote control (via this vnc connection) qemu guest. But I cannot do this because my mouse disappears when I click at my qemu guest. I see little black square only. (This square is vnc feature, it automatically appears when mouse disappears.) When I click to some objects inside guest I will instead click to another random object inside guest.
+
+I saw this bug in the following configurations:
+* A: Debian squeeze 64-bit, Teamviewer 8, Qemu 0.12.5, C: Ubuntu precise 64-bit, Teamviewer 8, B: Windows 7 32-bit, command line:
+qemu-system-x86_64 --enable-kvm -m 2048  -daemonize -localtime -drive cache=none,file=/root/vm/w7-sp1-i386-en.cow
+* A: Debian squeeze 64-bit, Teamviewer 8, Qemu 0.12.5, C: Ubuntu precise 64-bit, Teamviewer 8, B: Debian squeeze 64-bit, command line:
+qemu-system-x86_64 -enable-kvm -m 256 -daemonize -snapshot -net none -drive cache=none,file=/dev/sda
+* A: Debian squeeze 64-bit, x11vnc 0.9.10, Qemu 0.12.5, C: Ubuntu precise 64-bit, xvnc4viewer 4.1.1, B: Windows 7 32-bit, command line:
+qemu-system-x86_64 --enable-kvm -m 2048  -daemonize -localtime -drive cache=none,file=/root/vm/w7-sp1-i386-en.cow
+
+Also, if I add "-usbdevice tablet" option, this bug will disappear. So, probably, this bug is not a bug. But in this case you should document it. I. e. you should add to docs something like "add -usbdevice tablet if you remote control qemu host".
+
+Also, if I use "-vnc" option (in the text above I didn't use it!) my mouse doesn't work as expected, too. The pointers don't line up, i. e. are not synced. But if I add "-usbdevice tablet" option, mouse will work. As far as I know this is not a bug. But then document it, too. Qemu's man page already says "It is very useful to enable the usb tablet device when using this option (option -usbdevice tablet)" in qemu 0.12.5. But I think this is not enough. The man page should say: "You should add -usbdevice tablet option and your guest OS should support tablet device or your mouse will not work".
+
+I tried to reproduce this bug using lastest stable version (1.4.0) and master (5e3a0f418c4d57399778cee0b55aebfb663b6425).
+This versions seem to add "-usbdevice tablet" by default (and this is very good). But I think that if guest OS doesn't support tablet device then bug will still appear. So, I added option "-usbdevice mouse" to simulate this situation. And bug really appeared (i. e. mouse disappeared). So, please fix it or document it.
+
+Configurations:
+* A: Ubuntu precise 64-bit, x11vnc 0.9.12, Qemu 1.4.0, C: Debian squeeze 64-bit, xvnc4viewer 4.1.1, B: Ubuntu precise 64-bit, command line:
+/opt/qemu-1.4.0/bin/qemu-system-x86_64 -enable-kvm -m 256 -daemonize -snapshot -drive cache=none,file=/dev/sda -net none -usbdevice mouse
+* A: Ubuntu precise 64-bit, x11vnc 0.9.12, Qemu 5e3a0f418c4d57399778cee0b55aebfb663b6425, C: Debian squeeze 64-bit, xvnc4viewer 4.1.1, B: Ubuntu precise 64-bit, command line:
+/opt/qemu-5e3a0f418c4d57399778cee0b55aebfb663b6425/bin/qemu-system-x86_64 -enable-kvm -m 256 -daemonize -snapshot -drive cache=none,file=/dev/sda -net none -usbdevice mouse
+
+Same for -vnc option (i. e. pointers was not synced when using -usbdevice mouse)
+
+As you mentioned already, the solution is to use an USB tablet instead of a mouse device, and as far as I can see, it is also mentioned in the documentation of the "-vnc" parameter, so I'm closing this ticket now...
+