[Spice-devel] Problem with dual-display full-screen client on X

[Noel Van Hook]

On Mon, May 14, 2012 at 8:54 AM, Christophe Fergeau <cfergeau at redhat.com> wrote:
> Hey,
>
> On Fri, May 11, 2012 at 04:33:43PM -0500, Noel Van Hook wrote:
>> Background information:
>> I am running the guest OS (CentOS) with dual heads.
>> I am also running the client on CentOS.
>> When I open the client, two client windows appear (spice0 and spice1),
>> and all is well with the world.
>> The machine I am running the client on has two monitors, and is XRandR
>> compliant.
>>
>> The bug:
>> When I press Ctrl-Shift-F11 to change the guest to full-screen, both
>> monitors change resolution, and the spice0 window properly appears in
>> full screen mode on the left monitor.  The spice1 window never appears
>> anywhere, and the right monitor goes black with an "X" cursor on it.
>>
>> I did some debugging, and it appears as though my window manager may
>> be interfering with the clients attempt to use the second monitor.
>>
>> In the client code,  RedWindow::show() calls  RedWindow::move() to
>> move the right client window onto the right monitor.
>>  RedWindow::move() in turn calls XMoveWindow(), but the XMoveWindow
>> call appears to be ignored.  I suspect it is being intercepted by my
>> window manager, because if, right before I call RedWindow::move(), I
>> set the override_redirect attribute of _win to "true", it works fine.
>>  (I then set it back to "false" when we leave fullscreen mode).
>>
>> So, this appears to fix it... but is it the right fix?  Or have I just
>> patched a symptom of a deeper problem?
>
> This code in spice-client is quite hairy, and these days it's highly
> recommended to use virt-viewer/remote-viewer, did you test if they are
> doing the right thing on your setup ?
>

I am not familiar with virt-viewer or remote-viewer, but it sounds
like they are alternatives to spicec? If that is the case, it doesn't
help me.  I don't get to choose which viewer to use, I just get to
make it work. :-)
Noel

-- 
Noel Van Hook - Intelligraphics, Inc
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