Fedora xen - Sep 2007 - Mouse problem with FC7 uptodate, Windows XP virt machine, rdesktop connection.

Hi,

 

I used to run Windows XP inside a XEN virtual machine on FC6.

Everything was perfect.

To connect to the Windows XP virtual machine, I used to run rdesktop.

 

Today I installed FC7 from scratch and tried to use my Windows XP virtual
machine and I noticed a very strange behaviour:

 

All of this stuff runs on a Dell Latitude D620 laptop.

This laptop offers a touchpad, a trackpoint and of course USB ports on which
I connect a 3 button wheel mice.

FC7 is up to date and all packages are at last date version, including XEN.

Now when I connect to the Windows XP virtual machine via rdesktop, after a
few minutes the trackpoint and the mouse get weird: when using either the
trackpoint or the mouse moving rightwards, the pointer gets "stuck" on
the
left border of the screen whereas I can still use the touchpad and things
don''t get messed up.

However, when using FC7 without XEN, I don''t encounter this trouble.

Have you ever heard of such a problem?

 

Cheers

On Mon, Sep 17, 2007 at 06:16:49PM +0200, NoisilySilent wrote:
<snip>
> 
> Now when I connect to the Windows XP virtual machine via rdesktop, after a
> few minutes the trackpoint and the mouse get weird: when using either the
> trackpoint or the mouse moving rightwards, the pointer gets
"stuck" on the
> left border of the screen whereas I can still use the touchpad and things
> don''t get messed up.
> 
> However, when using FC7 without XEN, I don''t encounter this
trouble.
> 
> Have you ever heard of such a problem?
I had this weird cursor behaviour last week, on Fedora 7. I was running
a Xen kernel, also (2.6.20-2931, probably; but it could be a different
version).

If I recall correctly, I didn''t have any guest running at the time. It
happened when I started an Eclipse-based application[1]. The cursor
could be moved to the right, but only if I moved the mouse very slowly.

On my case, it was a desktop machine, so I didn''t have a touchpad,
just an USB mouse.


However, I didn''t manage to reproduce the problem today. Is it easily
reproducible, on your case?


[1] It was a IDE from QNX I had just installed for testing.

-- 
Eduardo

On Mon, Sep 17, 2007 at 08:13:23PM +0200, NoisilySilent
wrote:
> Hey, this is EXACTLY the same behavior!!!
> 
> Actually I think we are facing the same problem.
> I can move it to the right slowly too.
> This sounds really similar.
> 
> Unfortunately, in my situation it is reproducible as it happens every time
> :(
I have managed to reproduce it without using the Eclipse-based
application.

I simply create a new full-virtualization guest (using virt-install)
while moving heavily the mouse cursor. It will eventually get stuck in
the left side of the display, when the vncviewer Window is shown.

Restarting the X server solves the problem most of times, but I managed
to get the cursor stuck on the left if I move the mouse heavily while
the X server is restarting.

I have found a workaround, also:

''xset m 1/1 1000'' (in practice it will disable the mouse
acceleration
by setting a huge threshold) make the cursor behave properly. Enabling
mouse acceleration again gets the cursor stuck again. This makes me
believe that this is a Xorg bug, but that may be triggered more easily
when running Xen.

-- 
Eduardo

On Mon, Sep 17, 2007 at 04:01:45PM -0300, Eduardo Pereira Habkost wrote:
<snip>
> 
> I have managed to reproduce it without using the Eclipse-based
> application.
> 
> I simply create a new full-virtualization guest (using virt-install)
> while moving heavily the mouse cursor. It will eventually get stuck in
> the left side of the display, when the vncviewer Window is shown.
I have opened a bug for this:
https://bugzilla.redhat.com/show_bug.cgi?id=294011

-- 
Eduardo