diff --git a/lgl_android_install.py b/lgl_android_install.py
index 7f18dbd..dadb6d2 100755
--- a/lgl_android_install.py
+++ b/lgl_android_install.py
@@ -746,30 +746,36 @@ def main() -> int:
 
     conn.set_package(package)
 
+    # Determine package main activity to launch
+    activity = AndroidUtils.get_package_main_activity(conn)
+    if not activity:
+        print('ERROR: Package has no identifiable main activity')
+        return 4
+
     # Select layers to install and their configs
     need_32bit = AndroidUtils.is_package_32bit(conn, package)
     layers = get_layer_metadata(args.layer, need_32bit, args.symbols)
     if not layers:
-        return 4
+        return 5
 
     success = get_layer_configs(layers, args.config)
     if not success:
-        return 5
+        return 6
 
     # Install files
     for layer in layers:
         if not install_layer_binary(conn, layer):
             print('ERROR: Layer binary install on device failed')
-            return 6
+            return 7
 
         if not install_layer_config(conn, layer):
             print('ERROR: Layer config install on device failed')
-            return 7
+            return 8
 
     # Enable layers
     if not enable_layers(conn, layers):
         print('ERROR: Layer enable on device failed')
-        return 8
+        return 9
 
     print('Layers are installed and ready for use:')
     for layer in layers:
@@ -785,8 +791,15 @@ def main() -> int:
     if args.perfetto:
         perfetto_conf = configure_perfetto(conn, args.perfetto)
 
+    # Restart the package so it actually loads the layer ...
+    AndroidUtils.stop_package(conn)
+    AndroidUtils.start_package(conn, activity)
+
     input('Press any key when finished to uninstall all layers')
 
+    # Kill the package so we can cleanup
+    AndroidUtils.stop_package(conn)
+
     # Disable Perfetto trace
     if args.perfetto and perfetto_conf:
         cleanup_perfetto(conn, args.perfetto, *perfetto_conf)
@@ -794,17 +807,17 @@ def main() -> int:
     # Disable layers
     if not disable_layers(conn):
         print('ERROR: Layer disable on device failed')
-        return 9
+        return 10
 
     # Remove files
     for layer in layers:
         if not uninstall_layer_binary(conn, layer):
             print('ERROR: Layer binary uninstall from device failed')
-            return 10
+            return 11
 
         if not uninstall_layer_config(conn, layer):
             print('ERROR: Layer config uninstall from device failed')
-            return 11
+            return 12
 
     return 0
 
diff --git a/lglpy/android/test.py b/lglpy/android/test.py
index b64cf69..04f6449 100644
--- a/lglpy/android/test.py
+++ b/lglpy/android/test.py
@@ -239,6 +239,50 @@ def test_util_package_list(self):
         # Test that list length reduces each time as we add filters
         self.assertGreater(all_packages, debug_main_packages)
 
+    def test_util_package_main(self):
+        '''
+        Test helper to get main activity of a package.
+        '''
+        conn = ADBConnect()
+
+        packages = AndroidUtils.get_packages(conn, True, True)
+
+        # Test that a package was returned
+        self.assertGreater(len(packages), 0)
+        conn.set_package(packages[0])
+
+        # Test that a valid activity was returned
+        activity = AndroidUtils.get_package_main_activity(conn)
+        self.assertTrue(activity)
+
+    def test_util_package_start_stop(self):
+        '''
+        Test helper to get main activity of a package.
+        '''
+        conn = ADBConnect()
+
+        packages = AndroidUtils.get_packages(conn, True, True)
+
+        # Test that a package was returned
+        self.assertGreater(len(packages), 0)
+        conn.set_package(packages[0])
+
+        # Test that a valid activity was returned
+        activity = AndroidUtils.get_package_main_activity(conn)
+
+        # Test we can start a package if it is not running
+        AndroidUtils.stop_package(conn)
+        started = AndroidUtils.start_package(conn, activity)
+        self.assertTrue(started)
+
+        # Test we can stop a package
+        stopped = AndroidUtils.stop_package(conn)
+        self.assertTrue(stopped)
+
+        # Test we can ignore errors if package is already stopped
+        stopped = AndroidUtils.stop_package(conn)
+        self.assertTrue(stopped)
+
     def test_util_os_version(self):
         '''
         Test helper to get OS version.
diff --git a/lglpy/android/utils.py b/lglpy/android/utils.py
index 3509cf4..83b31f4 100644
--- a/lglpy/android/utils.py
+++ b/lglpy/android/utils.py
@@ -145,6 +145,41 @@ def get_packages(
 
         return package_list
 
+    @staticmethod
+    def get_package_main_activity(conn: ADBConnect):
+        '''
+        Get the main activity for a package.
+
+        Args:
+            conn: The adb connection.
+
+        Return:
+            The activity name, or None on error or if this is a system service
+            which has no activities.
+        '''
+        assert conn.package, \
+               'Cannot use get__package_main_activity() without a package'
+        package = conn.package
+
+        cmd = f'dumpsys package {package} | ' \
+            r'grep -A1 "android.intent.action.MAIN:" | ' \
+            r'tr " " "\n" | ' \
+            f"grep {package}/ || " \
+            r"exit 0"
+
+        try:
+            output = conn.adb_run('sh', '-c', f"'{cmd}'")
+            output = output.strip()
+            output = output.replace(f'{package}/', '')
+
+            if not output:
+                return None
+
+            return output
+
+        except sp.CalledProcessError:
+            return None
+
     @classmethod
     def get_os_version(cls, conn: ADBConnect) -> Optional[str]:
         '''
@@ -284,6 +319,46 @@ def get_package_data_dir(conn: ADBConnect):
         except sp.CalledProcessError:
             return None
 
+    @staticmethod
+    def start_package(conn: ADBConnect, activity: str) -> bool:
+        '''
+        Start the package for this connection.
+
+        Args:
+            conn: The adb connection.
+            activity: The name of the activity.
+
+        Returns:
+            True on success, False otherwise.
+        '''
+        assert conn.package, \
+            'Cannot use start_package() without package'
+
+        try:
+            target = f'{conn.package}/{activity}'
+            conn.adb_run('am', 'start', '-n', target, quote=True)
+        except sp.CalledProcessError:
+            return False
+
+        return True
+
+    @staticmethod
+    def stop_package(conn: ADBConnect) -> bool:
+        '''
+        Stop the package for this connection.
+
+        Return:
+            True if stopped or was not running, False if command failed.
+        '''
+        assert conn.package, \
+            'Cannot use stop_package() without package'
+
+        try:
+            conn.adb_run('am', 'force-stop', conn.package)
+            return True
+        except sp.CalledProcessError:
+            return False
+
     @staticmethod
     def set_property(conn: ADBConnect, prop: str, value: str) -> bool:
         '''
diff --git a/lglpy/timeline/drawable/drawable_channel.py b/lglpy/timeline/drawable/drawable_channel.py
index 063561b..7585fe6 100644
--- a/lglpy/timeline/drawable/drawable_channel.py
+++ b/lglpy/timeline/drawable/drawable_channel.py
@@ -29,7 +29,6 @@
 import bisect
 
 from lglpy.timeline.drawable.primitive_rectangle import PrimitiveRectangle
-from lglpy.timeline.drawable.world_drawable import WorldDrawableLine
 
 
 class DrawableChannel:
diff --git a/lglpy/timeline/drawable/timeline_base.py b/lglpy/timeline/drawable/timeline_base.py
index 264b491..1c6aa4e 100644
--- a/lglpy/timeline/drawable/timeline_base.py
+++ b/lglpy/timeline/drawable/timeline_base.py
@@ -36,9 +36,8 @@
 from lglpy.timeline.drawable.drawable import Drawable
 from lglpy.timeline.drawable.style import Style
 from lglpy.timeline.drawable.canvas_drawable import CanvasDrawableRect, \
-    CanvasDrawableRectFill, CanvasDrawableLabel, CanvasDrawableLine
+    CanvasDrawableRectFill, CanvasDrawableLine
 from lglpy.timeline.drawable.timeline_viewport import TimelineViewport
-from lglpy.timeline.drawable.entry_dialog import get_entry_dialog
 
 
 class TimelineWidgetBase:
@@ -650,9 +649,7 @@ def get_coord_str(self, cx, cy):
             change should be presented to the lglpy.timeline.
         '''
         # If in the ACTION BAR then no string
-        start = 0
-        end = self.ACTION_BAR_PIXELS
-        if start <= cy < self.ACTION_BAR_PIXELS:
+        if 0 <= cy < self.ACTION_BAR_PIXELS:
             return ''
 
         # Otherwise we are over the main timeline so provide timeline coords
diff --git a/lglpy/timeline/gui/timeline/info_widget.py b/lglpy/timeline/gui/timeline/info_widget.py
index 05e543d..b696344 100644
--- a/lglpy/timeline/gui/timeline/info_widget.py
+++ b/lglpy/timeline/gui/timeline/info_widget.py
@@ -28,7 +28,7 @@
 
 from collections import defaultdict
 
-from ...data.raw_trace import GPUStreamID, GPUStageID
+from ...data.raw_trace import GPUStreamID
 from ...drawable.text_pane_widget import TextPaneWidget
 
 
@@ -71,7 +71,7 @@ def get_frame_rate_report(self, start, end):
         '''
         # Determine which frames are entirely in the active range
         out_frames = set()
-        in_frames = dict()
+        in_frames = {}
 
         for event in self.timeline_widget.drawable_trace.each_object():
             frame = event.user_data.frame
@@ -195,7 +195,7 @@ def ch_filt(x):
             metrics.append(f'  {label:{label_len}} {util:>5.1f}%')
 
         util = self.get_utilization(start, end, channels)
-        label = f'Any stream:'
+        label = 'Any stream:'
         metrics.append(f'  {label:{label_len}} {util:>5.1f}%')
         metrics.append('')
         return metrics
@@ -314,7 +314,7 @@ def compute_active_event_stats_multi(self, active):
         if top_n_limit > 1:
             metrics.append(f'Top {top_n_limit} workload runtimes:')
         else:
-            metrics.append(f'Workload runtime:')
+            metrics.append('Workload runtime:')
 
         tags_by_cost = sorted(
             total_tag_time, key=total_tag_time.get, reverse=True)
@@ -356,7 +356,7 @@ def get_active_event_stats(self):
         if self.cached_active_event == active:
             return self.cached_event_info
 
-        elif len(active) == 0:
+        if len(active) == 0:
             info = None
 
         else:
diff --git a/lglpy/timeline/gui/timeline/timeline_widget.py b/lglpy/timeline/gui/timeline/timeline_widget.py
index 55c2335..bf9968c 100644
--- a/lglpy/timeline/gui/timeline/timeline_widget.py
+++ b/lglpy/timeline/gui/timeline/timeline_widget.py
@@ -29,7 +29,6 @@
 # pylint: disable=wrong-import-position
 from gi.repository import Gtk
 
-from lglpy.timeline.drawable.world_drawable import WorldDrawableLine
 from lglpy.timeline.drawable.timeline_base import TimelineWidgetBase