[virt-tools-list] virt-viewer: Having per window full-screen state causes monitor arrangement issues

[Jonathon Jongsma]

Hi Hans,

This looks like the exact scenario for Bug 1002156, which I'm debugging at the moment. Your analysis is correct, I'm just trying to decide on the best way to fix it.

Jonathon


----- Original Message -----
> From: "Hans de Goede" <hdegoede at redhat.com>
> To: "Virt Tools" <virt-tools-list at redhat.com>
> Sent: Friday, September 20, 2013 3:53:50 AM
> Subject: [virt-tools-list] virt-viewer: Having per window full-screen state causes monitor arrangement issues
> 
> Hi All,
> 
> While running some multi-monitor tests I've noticed that having per
> window fullscreen causes problems with the monitor location inside
> the guest.
> 
> IE try the following. Take a client with 2 physical monitors, both
> running at 1920x1080. Lets call these phys1 and phys2 with phys1
> being on the left, and phys2 on the right.
> 
> Now connect to a RHEL-6.5 vm. Put the remote-viewer window
> on phys2, go to view displays and enable display 2, but the
> window for display 2 on phys1.
> 
> Fullscreen both. All is well.
> 
> Now unfull screen display 2 (so the remote-viewer window on phys1), and
> re-fullscreen it.
> 
> After this "xrandr --current" in the guest shows:
> 
> qxl-0 connected 1920x1080+400+0
> qxl-1 connected 1920x1080+0+0
> 
> So now qxl-0 largely overlaps qxl-1, rather then being fully to the
> right of it.
> 
> After a disconnect / reconnect and then fullscreening again, I can
> even get the 2 to be complete clones of each other (so both are
> at +0+0).
> 
> I have not debugged this, but I believe this is caused by the
> x y coordinates for the monitor being send to the guest not being
> updated for all monitors on fullscreen / un-fullscreen.
> 
> We should probably always update all of them on a single window
> fullscreen / unfullscreen. And use our auto-align ltr code to
> calculate the x+y coordinates, except when all windows are
> fullscreen, then we should use the physical monitor coordinates.
> 
> Regards,
> 
> Hans
> 
> 
> 
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