diff --git a/src/hasskiosk/runner.py b/src/hasskiosk/runner.py
index 8e6b5a1..1bc2629 100644
--- a/src/hasskiosk/runner.py
+++ b/src/hasskiosk/runner.py
@@ -2,6 +2,7 @@
 
 import asyncio
 import logging
+import subprocess
 from contextlib import AsyncExitStack
 from typing import Any, Dict, Set
 
@@ -49,11 +50,19 @@ async def screen_state_mqtt_handler(messages):
     """Screen state handler, reacts on presence messages."""
     log = logging.getLogger(__name__)
     async for message in messages:
-        log.info(
-            "screen sate message on topic %s: %s",
-            message.topic,
-            message.payload.decode(),
-        )
+        payload = message.payload.decode()
+        log.info("screen sate message on topic %s: %s", message.topic, payload)
+        if payload == "on":
+            cmd = ["xset", "dpms", "force", "on"]
+            log.info("motion detected, forcing screen state to on. CMD: %s", cmd)
+            result = subprocess.run(cmd, capture_output=True)
+            if result.returncode != 0:
+                log.error(
+                    "nonzero return code: %s. stderr: %r, stdout: %r",
+                    result.returncode,
+                    result.stderr,
+                    result.stdout,
+                )
 
 
 async def cancel_tasks(tasks):
diff --git a/tox.ini b/tox.ini
index d3eef28..3768f51 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py37,security,lint,bundle
+envlist = py37,security,lint
 isolated_build = True
 
 [testenv]
@@ -14,6 +14,7 @@ deps = setuptools
 deps =
     importlib_metadata
     pytest
+    pytest-asyncio
     pytest-cov
     pdbpp
 commands =
@@ -29,7 +30,7 @@ commands =
 deps =
     bandit
 commands =
-   bandit {envsitepackagesdir}/hasskiosk -r
+   bandit {toxinidir}/src/hasskiosk -r
 
 [testenv:lint]
 deps =