[Xen-devel] Problems with guest mouse Was: More issues with xl on 4.1.0-rc

[M A Young <m.a.young@xxxxxxxxxxxx>]

On Fri, 4 Feb 2011, Stefano Stabellini wrote:

> On Fri, 4 Feb 2011, M A Young wrote:
> > On Fri, 4 Feb 2011, M A Young wrote:
> >
> > > On Fri, 4 Feb 2011, Stefano Stabellini wrote:
> > >
> > > > On Fri, 4 Feb 2011, M A Young wrote:
> > > > > On Fri, 4 Feb 2011, Stefano Stabellini wrote:
> > > > >
> > > > > > On Thu, 3 Feb 2011, M A Young wrote:
> > > > > > > I have spotted another couple of bugs when testing with xl on 4.1.0-rc
> > > > > > > and
> > > > > > > a xen/next-2.6.38 based kernel.
> > > > > > >
> > > > > > > If I set vfb = [ 'sdl' ] in the configuration file, then I can type in
> > > > > > > the
> > > > > > > window produced, but the mouse doesn't work (the pointer stays fixed in
> > > > > > > the middle of the window). Alao clicking on the window doesn't trigger
> > > > > > > the
> > > > > > > "grab keyboard and mouse" mode, though I can manually trigger it and
> > > > > > > leave
> > > > > > > it using the ctrl-alt key combination.
> > > > > > ... I cannot reproduce the second one
> > > > > > (however I am using X remoting because I don't have an X server on my
> > > > > > testbox).
> > > > > Thanks for the first fix. The mouse problem is reproducible over remote X
> > > > > (ssh -X) and if I use vnc rather than sdl. Do you have any idea how we
> > > > > might debug this?
> > > > Does the mouse work if you just have the console and gpm in the guest?
> > > > What is the output of "xenstore-ls /local/domain/$DOMID/device/vkbd"?
> > > The mouse mostly works with a console and gpm - I get a reverse video cursor
> > > which will move, cut and paste, though it isn't quite in step with where the
> > > pointer would be, eg. if I enter the window from the bottom the cursor
> > > appears more to the right than it should be.
> If you are getting mouse events in the guest's kernel, I think the basic
> mechanism must be working correctly.
> Could it be a problem with your xserver?
>
> Otherwise you need to add some printf in qemu in
> hw/xenfb.c:xenfb_mouse_event.
I am still having problems with this. My debugging output of 
xenfb_mouse_event looked the same as a different computer that didn't have 
the proble. Do you have any further debugging suggestions?
        Michael Young

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