diff --git a/lib/logitech/unifying_receiver/hidpp10.py b/lib/logitech/unifying_receiver/hidpp10.py
index e5bd4349..f78fcc75 100644
--- a/lib/logitech/unifying_receiver/hidpp10.py
+++ b/lib/logitech/unifying_receiver/hidpp10.py
@@ -177,7 +177,8 @@ def get_firmware(device):
 
 
 def get_notification_flags(device):
-	if device.kind:
+	if device.kind is not None:
+		# peripherals with protocol >= 2.0 don't support registers
 		p = device.protocol
 		if p is None or p >= 2.0:
 			return
@@ -189,7 +190,8 @@ def get_notification_flags(device):
 
 
 def set_notification_flags(device, *flag_bits):
-	if device.kind:
+	if device.kind is not None:
+		# peripherals with protocol >= 2.0 don't support registers
 		p = device.protocol
 		if p is None or p >= 2.0:
 			return
diff --git a/lib/logitech/unifying_receiver/listener.py b/lib/logitech/unifying_receiver/listener.py
index 37e78db1..647922e2 100644
--- a/lib/logitech/unifying_receiver/listener.py
+++ b/lib/logitech/unifying_receiver/listener.py
@@ -140,7 +140,7 @@ class EventsListener(_threading.Thread):
 		last_tick = 0
 		# the first idle read -- delay it a bit, and make sure to stagger
 		# idle reads for multiple receivers
-		idle_reads = _IDLE_READS * 2 + (ihandle % 3) * 4
+		idle_reads = _IDLE_READS * 2 + (ihandle % 5) * 4
 
 		while self._active:
 			if self._queued_notifications.empty():
diff --git a/lib/logitech/unifying_receiver/status.py b/lib/logitech/unifying_receiver/status.py
index 646c9b48..8186bbeb 100644
--- a/lib/logitech/unifying_receiver/status.py
+++ b/lib/logitech/unifying_receiver/status.py
@@ -92,7 +92,7 @@ class ReceiverStatus(dict):
 		# make sure to read some stuff that may be read later by the UI
 		r.serial, r.firmware, None
 
-		# r.enable_notifications()
+		# get an update of the notification flags
 		self[KEYS.NOTIFICATION_FLAGS] = _hidpp10.get_notification_flags(r)
 
 	def process_notification(self, n):
diff --git a/lib/solaar/ui/__init__.py b/lib/solaar/ui/__init__.py
index 7def7b3a..e3bfcb03 100644
--- a/lib/solaar/ui/__init__.py
+++ b/lib/solaar/ui/__init__.py
@@ -63,8 +63,7 @@ def destroy():
 from logitech.unifying_receiver.status import ALERT
 def _status_changed(device, alert, reason):
 	assert device is not None
-	if _log.isEnabledFor(_DEBUG):
-		_log.debug("status changed: %s, %s, %s", device, alert, reason)
+	_log.info("status changed: %s, %s, %s", device, alert, reason)
 
 	tray.update(device)
 	if alert & ALERT.ATTENTION:
diff --git a/lib/solaar/ui/tray.py b/lib/solaar/ui/tray.py
index e972030f..4394fc61 100644
--- a/lib/solaar/ui/tray.py
+++ b/lib/solaar/ui/tray.py
@@ -29,11 +29,6 @@ _MENU_ICON_SIZE = Gtk.IconSize.LARGE_TOOLBAR
 #
 #
 
-# for which device to show the battery info in systray, if more than one
-_picked_device = None
-
-
-
 def _create_menu():
 	menu = Gtk.Menu()
 
@@ -409,6 +404,10 @@ def _update_menu_item(index, device_status):
 #
 #
 
+# for which device to show the battery info in systray, if more than one
+_picked_device = None
+
+# cached list of devices and some of their properties
 _devices_info = []
 _menu = None
 _icon = None
diff --git a/lib/solaar/ui/window.py b/lib/solaar/ui/window.py
index aa96deba..90f5b869 100644
--- a/lib/solaar/ui/window.py
+++ b/lib/solaar/ui/window.py
@@ -49,7 +49,7 @@ _UNIFYING_RECEIVER_TEXT = (
 		'%d paired device(s).\n\n<small>Up to %d devices can be paired to this receiver.</small>',
 	)
 _NANO_RECEIVER_TEXT = (
-	'No paired device.\n\n<small> \n </small>',
+	'No paired device.\n\n<small> </small>',
 	' \n\n<small>Only one device can be paired to this receiver.</small>',
 	)
 
@@ -144,6 +144,7 @@ def _create_details_panel():
 	p = Gtk.Frame()
 	# p.set_border_width(2)
 	p.set_shadow_type(Gtk.ShadowType.ETCHED_OUT)
+	p.set_size_request(240, 90)
 
 	p._text = Gtk.Label()
 	p._text.set_padding(4, 4)
@@ -225,7 +226,7 @@ def _create_info_panel():
 
 def _create_tree(model):
 	tree = Gtk.TreeView()
-	tree.set_size_request(240, 120)
+	tree.set_size_request(240, 0)
 	tree.set_headers_visible(False)
 	tree.set_show_expanders(False)
 	tree.set_level_indentation(16)
@@ -437,6 +438,7 @@ def _update_details(button):
 			if device.kind is None:
 				yield ('Path', device.path)
 			else:
+				# yield ('Codename', device.codename)
 				hid = device.protocol
 				yield ('Protocol', 'HID++ %1.1f' % hid if hid else 'unknown')
 				if device.polling_rate:
@@ -451,11 +453,11 @@ def _update_details(button):
 			flag_bits = device.status.get(_K.NOTIFICATION_FLAGS)
 			if flag_bits is not None:
 				flag_names = ('(none)',) if flag_bits == 0 else _hidpp10.NOTIFICATION_FLAG.flag_names(flag_bits)
-				yield ('Notifications', ('\n%16s' % ' ').join(flag_names))
+				yield ('Notifications', ('\n%15s' % ' ').join(flag_names))
 
 		items = _details_items(device)
-		markup_text = '<small><tt>' + '\n'.join('%-14s: %s' % i for i in items if i) + '</tt></small>'
-		_details._text.set_markup(markup_text)
+		text = '\n'.join('%-13s: %s' % i for i in items if i)
+		_details._text.set_markup('<small><tt>' + text + '</tt></small>')
 
 	_details.set_visible(visible)
 
@@ -469,7 +471,7 @@ def _update_receiver_panel(receiver, panel, buttons, full=False):
 			panel._count.set_markup(_UNIFYING_RECEIVER_TEXT[1] % (devices_count, receiver.max_devices))
 	else:
 		if devices_count == 0:
-			panel._count.set_text(_NANO_RECEIVER_TEXT[0])
+			panel._count.set_markup(_NANO_RECEIVER_TEXT[0])
 		else:
 			panel._count.set_markup(_NANO_RECEIVER_TEXT[1])