[Spice-devel] spice & multiple monitors

[Emre Erenoglu]

On Mon, Mar 28, 2011 at 4:20 PM, Alon Levy <alevy at redhat.com> wrote:

> On Mon, Mar 28, 2011 at 04:04:11PM +0400, Emre Erenoglu wrote:
> > On Mon, Mar 28, 2011 at 3:16 PM, Alon Levy <alevy at redhat.com> wrote:
> >
> > > On Mon, Mar 28, 2011 at 10:11:38AM +0400, Emre Erenoglu wrote:
> > > > On Sun, Mar 27, 2011 at 7:00 PM, Alon Levy <alevy at redhat.com> wrote:
> > > >
> > > > > On Sun, Mar 27, 2011 at 06:36:17PM +0400, Emre Erenoglu wrote:
> > > > > > Hi,
> > > > > >
> > > > > > I have a linux system with two monitors, one internal screen of
> my
> > > laptop
> > > > > > running at 1280x800 and the other is a 22" monitor with 1920x1080
> > > > > > resolution. I use them in an extended desktop mode.
> > > > > >
> > > > > > I would like to assign both of these screens to the virtual
> machine
> > > > > running
> > > > > > qxl, but I didn't see anywhere how I can do that. I want that the
> > > guest
> > > > > > machine sees two monitors connected to it, so that I can use it
> just
> > > like
> > > > > I
> > > > > > use a real system (ie moving windows from one screen to another,
> > > etc.).
> > > > > >
> > > > > > The only option I found relevant is the   -f,
> > > --full-screen[=auto-conf]
> > > > >  but
> > > > > > it does not work as I expect. Would this boil down to the guest
> agent
> > > > > issue
> > > > > > or is there something I need to do?
> > > > > >
> > > > > > spice is 0.8.0, qemu 0.14.
> > > > >
> > > > > To get two monitors you need to run the vm with two qxl devices.
> The
> > > first
> > > > > one gets created by the "-vga qxl", the second (and more - you can
> have
> > > > > up to four) gets created with "-device qxl". The client should pick
> > > them
> > > > > up automatically, the old client knows to close or open a window if
> the
> > > > > guest
> > > > > disables or reenables the screen, the spice-gtk client doesn't do
> that
> > > yet
> > > > > so you will get a number of windows with it anyway.
> > > > >
> > > > >
> > > > Hi Alon,
> > > >
> > > > Thanks, I managed to do what you're saying. The only issue I'm facing
> is
> > > > that mouse is now sometimes loosing coordinate synchronization so it
> > > becomes
> > > > impossible to work. Is this a known bug? Shall I report it somewhere?
> > >
> > > I am not aware of it, please check if it's already reported in
> freedesktop
> > > or
> > > redhat bugzillas (bugzilla.freedesktop.org and
> bugzilla.redhat.comrespectively).
> > > If it isn't reported please report it in freedesktop, thanks!
> > >
> > >
> > I will, thanks. I was using  spicec client (which you referred as "old"),
> so
> > I will also try with the spice-gtk client to reproduce.
> >
> > >
> > > > Is there any way that this works in fullscreen mode covering both
> screens
> > > of
> > > > my system?
> > >
> > > You mean you want to have a single qxl device (i.e. single monitor
> since
> > > each qxl
> > > device is a single monitor device) and the client should use both
> client
> > > (physical)
> > > screens in fullscreen? we don't support that in spicec afaik, and I
> don't
> > > think
> > > anyone has ever considered that - sounds useful if you have two
> monitors of
> > > the
> > > same resolution and physically adjacent. Actually just setting a
> resolution
> > > in the
> > > guest should work in windowed mode (set a large enough resolution and
> the
> > > window
> > > will use space from both monitors), but fullscreen I think will pick
> one of
> > > the monitors.
> > >
> > >
> > Well, not really. In my setup, I have a big VGA monitor (22") with
> 1920x1080
> > resolution, and below it, I have my laptop screen (1280x800). For
> example, I
> > adjust 2nd screen to match the laptop resolution (ie 1280x800), so I get
> a
> > 2nd window matching this in my host.
> >
> > I want to maximize this window in the laptop screen such that it covers
> the
> > entire screen (since resolutions match) --> fullscreen.
> The entire laptop's screen?
>
> So:
>  Guest:
>  Monitor 1: 1920x1080
>  Monitor 2: 1280x800
> ?
>

Yes.


> >
> > We can image the same thing if the 1st window (ie 1920x1080) also matches
> > the VGA monitor at 1920x1080. It shall also be "fullscreen-able".
> >
> > In the current client, if I set a 2nd monitor of 1280x800, I get this
> window
> > in the host system, I move it to the laptop screen (at 1280x800 also),
> but I
> > have to deal with the window borders and it can't be fully occupying the
> > whole screen in that monitor. Hope I could explain myself :)
> Yes, of course, and you also have the window manager's bottom/top parts
> that
> occupy some screen real-estate. That's what fullscreen is for.
>
>
Exactly :)


> >
> > It would be good, if we could double click any client window border and
> it
> > can become fullscreen in the monitor it is residing, with a key-press
> option
> > to return to a window mode (ie CTRL+ALT+ENTER etc.). With this, I could
> have
> > a virtual system exactly as if I'm working on real hardware.
> >
> Right - we have fullscreen support, it's triggered (in and out) by default
> by
> Shift-F11 with spicec, and with spicy (in spicy you can also toggle it from
> the
> menu). In spicec the shortcut is configurable, not sure about spicy. In
> vinagre
> you can also use the fullscreen feature via it's spice support (that uses
> spice-gtk).
>
>
OK, that's great, I didn't know that. I will give SHIFT-F11 it a try and
also with spicy client. Would this work even if I have two windows for the
two monitors of the virtual system? Would they be independentely
full-screenable? ie the Shift-F11 will impact only the active spice client
window?  I guess I'd better try :)

-- 
Emre
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