/usr/bin/kvm doesn't exist on suse distros so check instead for
/usr/bin/qemu-system-x86_64
Index: virt-manager-3.0.0/virtManager/createconn.py
===================================================================
--- virt-manager-3.0.0.orig/virtManager/createconn.py
+++ virt-manager-3.0.0/virtManager/createconn.py
@@ -33,7 +33,7 @@ def _default_uri():  # pragma: no cover
 
     if (os.path.exists("/usr/bin/qemu") or
         os.path.exists("/usr/bin/qemu-kvm") or
-        os.path.exists("/usr/bin/kvm") or
+        os.path.exists("/usr/bin/qemu-system-x86_64") or
         os.path.exists("/usr/libexec/qemu-kvm") or
         glob.glob("/usr/bin/qemu-system-*")):
         return "qemu:///system"