diff --git a/tests/check_drm_clients b/tests/check_drm_clients
new file mode 100755
index 00000000..3e871ec3
--- /dev/null
+++ b/tests/check_drm_clients
@@ -0,0 +1,30 @@
+#!/bin/sh
+
+if [ -d /debug/dri ] ; then
+	debugfs_path=/debug_dri
+fi
+
+if [ -d /sys/kernel/debug/dri ] ; then
+	debugfs_path=/sys/kernel/debug/dri
+fi
+
+i915_path=x
+for dir in `ls $debugfs_path` ; do
+	if [ -f $debugfs_path/$dir/i915_error_state ] ; then
+		i915_path=$debugfs_path/$dir
+		break
+	fi
+done
+
+if [ $i915_path = "x" ] ; then
+	echo i915 debugfs path not found.
+	exit 1
+fi
+
+# read everything we can
+if [ `cat $i915_path/clients | wc -l` -gt "2" ] ; then
+	echo ERROR: other drm clients running
+	exit 1
+fi
+
+exit 0