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[Xen-users] Mouse problem update...is it now a VNC problem?


  • To: xen-users@xxxxxxxxxxxxxxxxxxx
  • From: "Just Anidiot" <jistanidiot@xxxxxxxxx>
  • Date: Mon, 4 Jun 2007 16:26:47 -0400
  • Delivery-date: Mon, 04 Jun 2007 13:25:19 -0700
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  • List-id: Xen user discussion <xen-users.lists.xensource.com>

I've tried the following...

add usb=1 and usbdevice='tablet' to the .hvm file

This did nothing other than break the mouse even worse (although it
does solve the problem if the guestOS is WinXP).

I then found something about needing to use Summagraphics.  This was
buried deep within a Xen User's Manual.  However after following the
instructions X would crash on boot saying about being improperly
configured.  I finally got this to boot by adding another InputDevice
under "ServerLayout"

However this still exhibited the bad mouse behavior.

The only other thing I could find to try was VNC.
I added vnc=1 and vncconsole=1 to the .hvm file

However this did not improve things at all.  It did start to pop up a
Console during the boot, so if I needed to play with grub, I could.
But this appeared to be the only useful effect.  The mouse on the
guest OS was still out of synch with the real mouse.

So my last attempt was to install VNC on the guest OS and VNC to it.
This seems to take care of the mouse issue. However this solution has
a couple of problems:

1) I have to find the IP address first.  This means I have to go in
through the Virtual Machine Console and run an ifconfg.  Of course
using the Virtual Machine console gives the awful mouse problem.  I've
tried looking at the "Details" through the Virtual Machine Manager,
however all I can get is the MAC address.  Is there a quick and easy
way to get the IP address of the virtual machine?

2) There's lots of stuff out there that says VNC isn't secure.  I've
seen something about port forwarding mentioned recently on this list
and on some sites about securing VNC.  So I tried
 ssh -f -C -N -L 5900:localhost:5900 IPofGuestOS
This kinda worked, but when I do vncviewer localhost all I get is the
virtual machine console that I can get by clicking on "open" in the
Virtual Machine Manager.  This is the thing that's got the horrible
mouse problem.  I tried to fiddle with the port numbers on both ends
to get the :1 vncserver or the :2 vncserver, but I seem to only be
able to get them if I vnc to the IP address.   I double checked and
can get to the other vncservers by using the ip address.

This mouse problem is making me seriously consider giving up on
running any Linux distro as a virtual machine.  Can someone point me
to a solution?  There has to be some way to make a fully virtualized
Linux distro functional under xen.

On 5/30/07, Just Anidiot <jistanidiot@xxxxxxxxx> wrote:
Ok things have gotten worse.  I tinkered with the config setup for the
new virtual machine (the debian one).  Now the mouse doesn't work at
all.  It stays locked down in the lower right corner.  I had this
problem once with the WinXP.  I fixed that by adding usb=1 and
usbdevise='tablet' to the config file.  However I've done that and
still after another reboot, the mouse is still broken.

What can I do to troubleshoot this?

Thanks in advance.

On 5/30/07, Just Anidiot <jistanidiot@xxxxxxxxx> wrote:
> Hi,
>
> I'm running RHEL5 with xen.  I have two fully virtualized machines on
> this.  The first one is a WinXP which is fine.  The 2nd one is a
> debian etch system, which has a problem with the mouse.  Mouse
> movement on this one is very jerky.  Many times the mouse pointer will
> behave as if the screen ends about 1/4 of the way into the middle (so
> I can't click on any of the icons on the desktop).  If I do an
> Ctrl-Alt to ungrab the pointer, there is a good 2-3 inches difference
> between where the pointer is in the debian virtual  machine and where
> it appears according to RHEL.
>
> To create the debian virtual machine, I used the virtual machine
> manager.  Clicked new, and followed the instructions (I went with
> fully virtualized instead of para-).  The problem started after i
> rebooted the virtual machine after the install was completed.
>
> Can anyone suggest a way to fix this?
>
> Thanks  in advance.
>


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