Send monitor config if guest supports sparse monitors

It is ok to send monitor configuration even for displays which are not
disabled or enabled. Because the guest having support for the sparse
monitor configuration (VD_AGENT_CAP_SPARSE_MONITORS_CONFIG) will not
resize the monitor which is disabled / undefined.

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=90914

1 files changed, 9 insertions, 8 deletions

diff --git a/src/channel-main.c b/src/channel-main.c
index 8f5edf2..d573758 100644
--- a/src/channel-main.c
+++ b/src/channel-main.c
@@ -1428,14 +1428,15 @@ static gboolean timer_set_display(gpointer data)
 
     session = spice_channel_get_session(SPICE_CHANNEL(channel));
 
-    /* ensure we have an explicit monitor configuration at least for
-       number of display channels */
-    for (i = 0; i < spice_session_get_n_display_channels(session); i++)
-        if (c->display[i].display_state == DISPLAY_UNDEFINED) {
-            SPICE_DEBUG("Not sending monitors config, missing monitors");
-            return FALSE;
-        }
-
+    if (!spice_main_agent_test_capability(channel, VD_AGENT_CAP_SPARSE_MONITORS_CONFIG)) {
+        /* ensure we have an explicit monitor configuration at least for
+           number of display channels */
+        for (i = 0; i < spice_session_get_n_display_channels(session); i++)
+            if (c->display[i].display_state == DISPLAY_UNDEFINED) {
+                SPICE_DEBUG("Not sending monitors config, missing monitors");
+                return FALSE;
+            }
+    }
     spice_main_send_monitor_config(channel);
 
     return FALSE;