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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - intel-virtual-output virtual screens behaving strangely."
   href="https://bugs.freedesktop.org/show_bug.cgi?id=76146#c25">Comment # 25</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - intel-virtual-output virtual screens behaving strangely."
   href="https://bugs.freedesktop.org/show_bug.cgi?id=76146">bug 76146</a>
              from <span class="vcard"><a class="email" href="mailto:chris@chris-wilson.co.uk" title="Chris Wilson <chris@chris-wilson.co.uk>"> <span class="fn">Chris Wilson</span></a>
</span></b>
        <pre>Any luck with:

diff --git a/tools/virtual.c b/tools/virtual.c
index 0dfd308..64d345a 100644
--- a/tools/virtual.c
+++ b/tools/virtual.c
@@ -941,6 +941,20 @@ static int clone_init_xfer(struct clone *clone)
        return 0;
 }

+static XRRPanning *set_panning(XRRPanning *p, struct output *o)
+{
+       memset(p, 0, sizeof(*p));
+
+       p->timestamp = CurrentTime;
+
+       p->track_left   = p->left   = o->x;
+       p->track_top    = p->top    = o->y;
+       p->track_width  = p->width  = mode_width(&p->mode, p->rotation);
+       p->track_height = p->height = mode_height(&p->mode, p->rotation);
+
+       return p;
+}
+
 static void clone_update(struct clone *clone)
 {
        if (!clone->rr_update)
@@ -1254,7 +1268,7 @@ err:
                        if (ret)
                                goto err;

-                       ret = XRRSetPanning(dst->dpy, res, rr_crtc,
memset(&panning, 0, sizeof(panning)));
+                       ret = XRRSetPanning(dst->dpy, res, rr_crtc,
set_panning(&panning, dst));
                        DBG(("%s-%s: XRRSetPanning %s\n",
DisplayString(dst->dpy), dst->name, ret ? "failed" : "success"));
                        (void)ret;</pre>
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