[Qemu-devel] [Bug 1162227] Re: Mouse works badly when connecting to host via vnc

[Askar Safin]

** Description changed:

  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:
+ * A: Debian squeeze 64-bit, Teamviewer 8, Qemu 1.1.2, 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:
+ * A: Debian squeeze 64-bit, Teamviewer 8, Qemu 1.1.2, 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:
+ * A: Debian squeeze 64-bit, x11vnc 0.9.10, Qemu 1.1.2, 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".
+ device when using this option (option -usbdevice tablet)" in qemu 1.1.2.
+ 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".

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1162227

Title:
  Mouse works badly when connecting to host via vnc

Status in QEMU:
  New

Bug description:
  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 1.1.2, 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 1.1.2, 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 1.1.2, 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 1.1.2. 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".

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1162227/+subscriptions