chore: release v0.3.0

Restructure how displays are exposed in Home Assistant:

Each physical monitor is now its own HA device linked to the media-server
hub via `via_device`. The hub keeps the media_player + script buttons; per-
display devices hold the power switch, brightness slider, and the new
capability entities. This lets users place displays in their own area/room
and keeps related entities grouped together in the UI.

New platforms:
- sensor: DisplayResolutionSensor (diagnostic, from EDID)
- binary_sensor: DisplayPrimaryBinarySensor + DisplayPowerControlBinarySensor
  (both diagnostic; help users see why a power switch is or isn't created)
- select: DisplayInputSourceSelect (HDMI1/DP1/...), DisplayColorPresetSelect
  (color temperature), DisplayPictureModeSelect (VCP 0xDC scene modes)
- number: added DisplayContrastNumber alongside brightness

Other changes:
- display_device helper centralises the per-display DeviceInfo; pulls real
  manufacturer/model from EDID; device name no longer prepends the hub
  title since via_device already shows the hierarchy.
- api_client gains set_display_{contrast,input_source,color_preset,picture_mode}
  and stops forcing `?refresh=true` on every poll so HA can ride the
  server's TTL cache instead of triggering full DDC/CI probes per entity.
- select / number entities now check the server's `success` flag and re-
  sync from the actual monitor state when a write was silently rejected
  (some monitors honor reads but ignore writes for certain DDC/CI codes).

Bumps manifest.json to 0.3.0 - the device topology change is user-visible
and existing brightness/power entities migrate to per-display devices on
first reload (unique_ids are preserved).

RELEASE_NOTES.md

@@ -1,10 +1,22 @@
-## v0.1.1 (2026-03-26)
+## v0.3.0 (2026-05-15)
 
-### ⚠️ Breaking Changes
-- Replace positional script `args` (list) with typed named `params` (dict) — update any automations calling `remote_media_player.execute_script` to use the new `params` format ([de4b7cf](https://git.dolgolyov-family.by/alexei.dolgolyov/haos-hacs-integration-media-player/commit/de4b7cf))
+### Migration / Behavior Changes
+- Each physical monitor is now its own Home Assistant device, linked to the media-server hub via `via_device`. Existing brightness and power entities migrate to per-display devices automatically on first reload — `unique_id`s are preserved, but entities will move under new devices in the UI and can be placed in their own area/room ([4156ded](https://git.dolgolyov-family.by/alexei.dolgolyov/haos-hacs-integration-media-player/commit/4156ded))
+- The hub keeps the `media_player` and script buttons; per-display devices hold the power switch, brightness slider, and the new DDC/CI capability entities ([4156ded](https://git.dolgolyov-family.by/alexei.dolgolyov/haos-hacs-integration-media-player/commit/4156ded))
 
 ### Features
-- Add execute_script service documentation to README ([de4b7cf](https://git.dolgolyov-family.by/alexei.dolgolyov/haos-hacs-integration-media-player/commit/de4b7cf))
+- **New diagnostic sensors**: `DisplayResolutionSensor` exposes the active resolution parsed from EDID ([4156ded](https://git.dolgolyov-family.by/alexei.dolgolyov/haos-hacs-integration-media-player/commit/4156ded))
+- **New diagnostic binary sensors**: `DisplayPrimaryBinarySensor` and `DisplayPowerControlBinarySensor` make it visible why a power switch is or isn't created for a given display ([4156ded](https://git.dolgolyov-family.by/alexei.dolgolyov/haos-hacs-integration-media-player/commit/4156ded))
+- **New select entities**:
+  - `DisplayInputSourceSelect` — switch active input (HDMI1, DP1, etc.) via DDC/CI
+  - `DisplayColorPresetSelect` — color temperature presets
+  - `DisplayPictureModeSelect` — VCP 0xDC scene modes ([4156ded](https://git.dolgolyov-family.by/alexei.dolgolyov/haos-hacs-integration-media-player/commit/4156ded))
+- **New number entity**: `DisplayContrastNumber` exposed alongside the existing brightness slider ([4156ded](https://git.dolgolyov-family.by/alexei.dolgolyov/haos-hacs-integration-media-player/commit/4156ded))
+- Per-display devices now show real manufacturer/model pulled from EDID; device names no longer prepend the hub title (the hierarchy is already shown via `via_device`) ([4156ded](https://git.dolgolyov-family.by/alexei.dolgolyov/haos-hacs-integration-media-player/commit/4156ded))
+- Select and number entities verify the server's `success` flag and re-sync from the actual monitor state when a write is silently rejected — some monitors honor DDC/CI reads but ignore writes for certain codes ([4156ded](https://git.dolgolyov-family.by/alexei.dolgolyov/haos-hacs-integration-media-player/commit/4156ded))
+
+### Performance
+- `api_client` no longer forces `?refresh=true` on every poll, letting the integration ride the media server's TTL cache instead of triggering a full DDC/CI probe per entity update ([4156ded](https://git.dolgolyov-family.by/alexei.dolgolyov/haos-hacs-integration-media-player/commit/4156ded))
 
 ---
 
@@ -13,6 +25,6 @@
 
 | Hash | Message | Author |
 |------|---------|--------|
-| [de4b7cf](https://git.dolgolyov-family.by/alexei.dolgolyov/haos-hacs-integration-media-player/commit/de4b7cf) | feat: replace script args with typed named parameters | alexei.dolgolyov |
+| [4156ded](https://git.dolgolyov-family.by/alexei.dolgolyov/haos-hacs-integration-media-player/commit/4156ded) | feat(displays): per-display devices + DDC/CI capability entities | alexei.dolgolyov |
 
 </details>

custom_components/remote_media_player/__init__.py

@@ -27,7 +27,15 @@ from .const import (
 
 _LOGGER = logging.getLogger(__name__)
 
-PLATFORMS: list[Platform] = [Platform.MEDIA_PLAYER, Platform.BUTTON, Platform.NUMBER, Platform.SWITCH]
+PLATFORMS: list[Platform] = [
+    Platform.MEDIA_PLAYER,
+    Platform.BUTTON,
+    Platform.NUMBER,
+    Platform.SWITCH,
+    Platform.SENSOR,
+    Platform.BINARY_SENSOR,
+    Platform.SELECT,
+]
 
 # Service schema for execute_script
 SERVICE_EXECUTE_SCRIPT_SCHEMA = vol.Schema(

custom_components/remote_media_player/api_client.py

@@ -33,6 +33,10 @@ from .const import (
     API_DISPLAY_MONITORS,
     API_DISPLAY_BRIGHTNESS,
     API_DISPLAY_POWER,
+    API_DISPLAY_CONTRAST,
+    API_DISPLAY_INPUT_SOURCE,
+    API_DISPLAY_COLOR_PRESET,
+    API_DISPLAY_PICTURE_MODE,
 )
 
 _LOGGER = logging.getLogger(__name__)
@@ -348,12 +352,12 @@ class MediaServerClient:
         return await self._request("POST", API_BROWSER_PLAY, {"path": file_path})
 
     async def get_display_monitors(self) -> list[dict[str, Any]]:
-        """Get list of connected monitors with brightness and power info.
+        """Get list of connected monitors with brightness, power, DDC/CI state.
 
-        Returns:
-            List of monitor dicts with id, name, brightness, power_supported, power_on, resolution
+        Uses the server's short TTL cache so per-entity polling does not pay
+        the full DDC/CI probe cost on every call.
         """
-        return await self._request("GET", f"{API_DISPLAY_MONITORS}?refresh=true")
+        return await self._request("GET", API_DISPLAY_MONITORS)
 
     async def set_display_brightness(self, monitor_id: int, brightness: int) -> dict[str, Any]:
         """Set brightness for a specific monitor.
@@ -383,6 +387,30 @@ class MediaServerClient:
             "POST", f"{API_DISPLAY_POWER}/{monitor_id}", {"on": on}
         )
 
+    async def set_display_contrast(self, monitor_id: int, contrast: int) -> dict[str, Any]:
+        """Set DDC/CI contrast for a specific monitor (0-100)."""
+        return await self._request(
+            "POST", f"{API_DISPLAY_CONTRAST}/{monitor_id}", {"contrast": contrast}
+        )
+
+    async def set_display_input_source(self, monitor_id: int, source: str) -> dict[str, Any]:
+        """Switch a monitor's DDC/CI input source by enum name (e.g. 'HDMI1')."""
+        return await self._request(
+            "POST", f"{API_DISPLAY_INPUT_SOURCE}/{monitor_id}", {"source": source}
+        )
+
+    async def set_display_color_preset(self, monitor_id: int, preset: str) -> dict[str, Any]:
+        """Apply a DDC/CI color preset by enum name (e.g. 'COLOR_TEMP_6500K')."""
+        return await self._request(
+            "POST", f"{API_DISPLAY_COLOR_PRESET}/{monitor_id}", {"preset": preset}
+        )
+
+    async def set_display_picture_mode(self, monitor_id: int, code: int) -> dict[str, Any]:
+        """Apply a DDC/CI picture/scene mode (VCP 0xDC) by raw code."""
+        return await self._request(
+            "POST", f"{API_DISPLAY_PICTURE_MODE}/{monitor_id}", {"code": code}
+        )
+
 
 class MediaServerWebSocket:
     """WebSocket client for real-time media status updates."""

custom_components/remote_media_player/binary_sensor.py

@@ -0,0 +1,116 @@
+"""Diagnostic binary sensors per display (primary, DDC/CI power-control support)."""
+
+from __future__ import annotations
+
+import logging
+from typing import Any
+
+from homeassistant.components.binary_sensor import BinarySensorEntity
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.entity import EntityCategory
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
+
+from .api_client import MediaServerClient, MediaServerError
+from .const import DOMAIN
+from .display_device import display_device_info
+
+_LOGGER = logging.getLogger(__name__)
+
+
+async def async_setup_entry(
+    hass: HomeAssistant,
+    entry: ConfigEntry,
+    async_add_entities: AddEntitiesCallback,
+) -> None:
+    """Set up per-display binary sensor entities."""
+    client: MediaServerClient = hass.data[DOMAIN][entry.entry_id]["client"]
+
+    try:
+        monitors = await client.get_display_monitors()
+    except MediaServerError as err:
+        _LOGGER.error("Failed to fetch display monitors: %s", err)
+        return
+
+    entities: list[Any] = []
+    for monitor in monitors:
+        entities.append(DisplayPrimaryBinarySensor(client, entry, monitor))
+        entities.append(DisplayPowerControlBinarySensor(client, entry, monitor))
+
+    if entities:
+        async_add_entities(entities)
+        _LOGGER.info("Added %d display binary sensor entities", len(entities))
+
+
+class _DisplayBinarySensorBase(BinarySensorEntity):
+    """Common boilerplate for per-display diagnostic binary sensors."""
+
+    _attr_has_entity_name = True
+    _attr_entity_category = EntityCategory.DIAGNOSTIC
+
+    def __init__(
+        self,
+        client: MediaServerClient,
+        entry: ConfigEntry,
+        monitor: dict[str, Any],
+    ) -> None:
+        self._client = client
+        self._monitor_id: int = monitor["id"]
+        self._attr_device_info = display_device_info(entry, monitor)
+
+
+class DisplayPrimaryBinarySensor(_DisplayBinarySensorBase):
+    """Indicates whether the display is the OS primary monitor."""
+
+    _attr_name = "Primary display"
+    _attr_icon = "mdi:monitor-star"
+
+    def __init__(
+        self,
+        client: MediaServerClient,
+        entry: ConfigEntry,
+        monitor: dict[str, Any],
+    ) -> None:
+        super().__init__(client, entry, monitor)
+        self._attr_unique_id = f"{entry.entry_id}_display_primary_{self._monitor_id}"
+        self._attr_is_on = bool(monitor.get("is_primary"))
+
+    async def async_update(self) -> None:
+        try:
+            monitors = await self._client.get_display_monitors()
+            for monitor in monitors:
+                if monitor["id"] == self._monitor_id:
+                    self._attr_is_on = bool(monitor.get("is_primary"))
+                    break
+        except MediaServerError as err:
+            _LOGGER.error("Failed to refresh primary flag for monitor %d: %s", self._monitor_id, err)
+
+
+class DisplayPowerControlBinarySensor(_DisplayBinarySensorBase):
+    """Indicates whether DDC/CI power control is available for this display."""
+
+    _attr_name = "Power control supported"
+    _attr_icon = "mdi:power-plug"
+
+    def __init__(
+        self,
+        client: MediaServerClient,
+        entry: ConfigEntry,
+        monitor: dict[str, Any],
+    ) -> None:
+        super().__init__(client, entry, monitor)
+        self._attr_unique_id = f"{entry.entry_id}_display_power_supported_{self._monitor_id}"
+        self._attr_is_on = bool(monitor.get("power_supported"))
+
+    async def async_update(self) -> None:
+        try:
+            monitors = await self._client.get_display_monitors()
+            for monitor in monitors:
+                if monitor["id"] == self._monitor_id:
+                    self._attr_is_on = bool(monitor.get("power_supported"))
+                    break
+        except MediaServerError as err:
+            _LOGGER.error(
+                "Failed to refresh power_supported flag for monitor %d: %s",
+                self._monitor_id, err,
+            )

custom_components/remote_media_player/const.py

@@ -40,6 +40,10 @@ API_BROWSER_PLAY = "/api/browser/play"
 API_DISPLAY_MONITORS = "/api/display/monitors"
 API_DISPLAY_BRIGHTNESS = "/api/display/brightness"
 API_DISPLAY_POWER = "/api/display/power"
+API_DISPLAY_CONTRAST = "/api/display/contrast"
+API_DISPLAY_INPUT_SOURCE = "/api/display/input_source"
+API_DISPLAY_COLOR_PRESET = "/api/display/color_preset"
+API_DISPLAY_PICTURE_MODE = "/api/display/picture_mode"
 
 # Service names
 SERVICE_EXECUTE_SCRIPT = "execute_script"

custom_components/remote_media_player/display_device.py

@@ -0,0 +1,56 @@
+"""Helpers for building per-display DeviceInfo.
+
+Each physical monitor is exposed as its own HA device (linked back to the
+media-server hub via `via_device`) so that per-display entities (power
+switch, brightness, future per-display sensors) cluster together, can be
+placed in their own area/room, and participate in device-based automations.
+"""
+
+from __future__ import annotations
+
+from typing import Any
+
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.helpers.entity import DeviceInfo
+
+from .const import DOMAIN
+
+
+def display_label(monitor: dict[str, Any]) -> str:
+    """Return a user-friendly label for a display monitor.
+
+    Resolution is appended when available so that two monitors sharing a
+    name (e.g. two "Generic PnP Monitor" entries) remain distinguishable.
+    """
+    name = monitor.get("name") or f"Monitor {monitor['id']}"
+    resolution = monitor.get("resolution")
+    if resolution:
+        return f"{name} ({resolution})"
+    return name
+
+
+def display_device_identifier(entry: ConfigEntry, monitor_id: int) -> tuple[str, str]:
+    """Return the stable identifier tuple for a per-display device."""
+    return (DOMAIN, f"{entry.entry_id}_display_{monitor_id}")
+
+
+def display_device_info(entry: ConfigEntry, monitor: dict[str, Any]) -> DeviceInfo:
+    """Build DeviceInfo for a per-display device linked to the hub.
+
+    Prefers the manufacturer/model reported by the monitor's EDID; falls back
+    to integration-level defaults so devices still appear sensibly even when
+    EDID parsing returns blanks.
+    """
+    manufacturer = (monitor.get("manufacturer") or "").strip() or "Remote Media Player"
+    model = (monitor.get("model") or "").strip() or "Display"
+
+    return DeviceInfo(
+        identifiers={display_device_identifier(entry, monitor["id"])},
+        via_device=(DOMAIN, entry.entry_id),
+        # HA's device tree already shows the parent hub above its children
+        # via `via_device`, so re-stating the entry title here would just
+        # duplicate the hub name on every child row.
+        name=display_label(monitor),
+        manufacturer=manufacturer,
+        model=model,
+    )

custom_components/remote_media_player/manifest.json

@@ -8,5 +8,5 @@
   "integration_type": "device",
   "iot_class": "local_push",
   "requirements": ["aiohttp>=3.8.0"],
-  "version": "0.1.1"
+  "version": "0.3.0"
 }

custom_components/remote_media_player/number.py

@@ -8,11 +8,11 @@ from typing import Any
 from homeassistant.components.number import NumberEntity, NumberMode
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.core import HomeAssistant
-from homeassistant.helpers.entity import DeviceInfo
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 
 from .api_client import MediaServerClient, MediaServerError
 from .const import DOMAIN
+from .display_device import display_device_info
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -22,7 +22,7 @@ async def async_setup_entry(
     entry: ConfigEntry,
     async_add_entities: AddEntitiesCallback,
 ) -> None:
-    """Set up display brightness number entities from a config entry."""
+    """Set up display brightness + contrast number entities from a config entry."""
     client: MediaServerClient = hass.data[DOMAIN][entry.entry_id]["client"]
 
     try:
@@ -31,25 +31,23 @@ async def async_setup_entry(
         _LOGGER.error("Failed to fetch display monitors: %s", err)
         return
 
-    entities = [
-        DisplayBrightnessNumber(
-            client=client,
-            entry=entry,
-            monitor=monitor,
-        )
-        for monitor in monitors
-        if monitor.get("brightness") is not None
-    ]
+    entities: list[Any] = []
+    for monitor in monitors:
+        if monitor.get("brightness") is not None:
+            entities.append(DisplayBrightnessNumber(client, entry, monitor))
+        if monitor.get("contrast_supported"):
+            entities.append(DisplayContrastNumber(client, entry, monitor))
 
     if entities:
         async_add_entities(entities)
-        _LOGGER.info("Added %d display brightness entities", len(entities))
+        _LOGGER.info("Added %d display number entities", len(entities))
 
 
 class DisplayBrightnessNumber(NumberEntity):
     """Number entity for controlling display brightness."""
 
     _attr_has_entity_name = True
+    _attr_name = "Brightness"
     _attr_native_min_value = 0
     _attr_native_max_value = 100
     _attr_native_step = 1
@@ -67,27 +65,9 @@ class DisplayBrightnessNumber(NumberEntity):
         self._client = client
         self._entry = entry
         self._monitor_id: int = monitor["id"]
-        self._monitor_name: str = monitor.get("name", f"Monitor {monitor['id']}")
-        self._resolution: str | None = monitor.get("resolution")
         self._attr_native_value = monitor.get("brightness")
-
-        # Use resolution in name to disambiguate same-name monitors
-        display_name = self._monitor_name
-        if self._resolution:
-            display_name = f"{self._monitor_name} ({self._resolution})"
-
         self._attr_unique_id = f"{entry.entry_id}_display_brightness_{self._monitor_id}"
-        self._attr_name = f"Display {display_name} Brightness"
-
-    @property
-    def device_info(self) -> DeviceInfo:
-        """Return device info."""
-        return DeviceInfo(
-            identifiers={(DOMAIN, self._entry.entry_id)},
-            name=self._entry.title,
-            manufacturer="Remote Media Player",
-            model="Media Server",
-        )
+        self._attr_device_info = display_device_info(entry, monitor)
 
     async def async_set_native_value(self, value: float) -> None:
         """Set the brightness value."""
@@ -108,3 +88,58 @@ class DisplayBrightnessNumber(NumberEntity):
                     break
         except MediaServerError as err:
             _LOGGER.error("Failed to update brightness for monitor %d: %s", self._monitor_id, err)
+
+
+class DisplayContrastNumber(NumberEntity):
+    """Number entity for controlling DDC/CI display contrast."""
+
+    _attr_has_entity_name = True
+    _attr_name = "Contrast"
+    _attr_native_min_value = 0
+    _attr_native_max_value = 100
+    _attr_native_step = 1
+    _attr_native_unit_of_measurement = "%"
+    _attr_mode = NumberMode.SLIDER
+    _attr_icon = "mdi:contrast-circle"
+
+    def __init__(
+        self,
+        client: MediaServerClient,
+        entry: ConfigEntry,
+        monitor: dict[str, Any],
+    ) -> None:
+        """Initialize the display contrast entity."""
+        self._client = client
+        self._monitor_id: int = monitor["id"]
+        self._attr_native_value = monitor.get("contrast")
+        self._attr_unique_id = f"{entry.entry_id}_display_contrast_{self._monitor_id}"
+        self._attr_device_info = display_device_info(entry, monitor)
+
+    async def async_set_native_value(self, value: float) -> None:
+        """Set the contrast value."""
+        try:
+            result = await self._client.set_display_contrast(self._monitor_id, int(value))
+        except MediaServerError as err:
+            _LOGGER.error("Failed to set contrast for monitor %d: %s", self._monitor_id, err)
+            return
+        if not result.get("success"):
+            _LOGGER.warning(
+                "Monitor %d rejected contrast %d (DDC/CI silently dropped)",
+                self._monitor_id, int(value),
+            )
+            await self.async_update()
+            self.async_write_ha_state()
+            return
+        self._attr_native_value = int(value)
+        self.async_write_ha_state()
+
+    async def async_update(self) -> None:
+        """Fetch updated contrast from the server."""
+        try:
+            monitors = await self._client.get_display_monitors()
+            for monitor in monitors:
+                if monitor["id"] == self._monitor_id:
+                    self._attr_native_value = monitor.get("contrast")
+                    break
+        except MediaServerError as err:
+            _LOGGER.error("Failed to update contrast for monitor %d: %s", self._monitor_id, err)

custom_components/remote_media_player/select.py

@@ -0,0 +1,219 @@
+"""Select platform: DDC/CI input source, color preset, and picture mode."""
+
+from __future__ import annotations
+
+import logging
+from typing import Any
+
+from homeassistant.components.select import SelectEntity
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
+
+from .api_client import MediaServerClient, MediaServerError
+from .const import DOMAIN
+from .display_device import display_device_info
+
+_LOGGER = logging.getLogger(__name__)
+
+
+async def async_setup_entry(
+    hass: HomeAssistant,
+    entry: ConfigEntry,
+    async_add_entities: AddEntitiesCallback,
+) -> None:
+    """Set up per-display select entities."""
+    client: MediaServerClient = hass.data[DOMAIN][entry.entry_id]["client"]
+
+    try:
+        monitors = await client.get_display_monitors()
+    except MediaServerError as err:
+        _LOGGER.error("Failed to fetch display monitors: %s", err)
+        return
+
+    entities: list[Any] = []
+    for monitor in monitors:
+        if monitor.get("input_source_supported") and monitor.get("available_input_sources"):
+            entities.append(DisplayInputSourceSelect(client, entry, monitor))
+        if monitor.get("color_preset_supported") and monitor.get("available_color_presets"):
+            entities.append(DisplayColorPresetSelect(client, entry, monitor))
+        if monitor.get("picture_mode_supported") and monitor.get("available_picture_modes"):
+            entities.append(DisplayPictureModeSelect(client, entry, monitor))
+
+    if entities:
+        async_add_entities(entities)
+        _LOGGER.info("Added %d display select entities", len(entities))
+
+
+class _DisplaySelectBase(SelectEntity):
+    """Shared base for per-display selects."""
+
+    _attr_has_entity_name = True
+
+    def __init__(
+        self,
+        client: MediaServerClient,
+        entry: ConfigEntry,
+        monitor: dict[str, Any],
+    ) -> None:
+        self._client = client
+        self._monitor_id: int = monitor["id"]
+        self._attr_device_info = display_device_info(entry, monitor)
+
+
+class DisplayInputSourceSelect(_DisplaySelectBase):
+    """Switch the monitor's active input (HDMI1, DP1, ...)."""
+
+    _attr_name = "Input source"
+    _attr_icon = "mdi:video-input-hdmi"
+
+    def __init__(
+        self,
+        client: MediaServerClient,
+        entry: ConfigEntry,
+        monitor: dict[str, Any],
+    ) -> None:
+        super().__init__(client, entry, monitor)
+        self._attr_unique_id = f"{entry.entry_id}_display_input_{self._monitor_id}"
+        self._attr_options = list(monitor.get("available_input_sources") or [])
+        current = monitor.get("input_source")
+        self._attr_current_option = current if current in self._attr_options else None
+
+    async def async_select_option(self, option: str) -> None:
+        try:
+            result = await self._client.set_display_input_source(self._monitor_id, option)
+        except MediaServerError as err:
+            _LOGGER.error("Failed to set input source for monitor %d: %s", self._monitor_id, err)
+            return
+        if not result.get("success"):
+            _LOGGER.warning(
+                "Monitor %d rejected input source %s (DDC/CI silently dropped)",
+                self._monitor_id, option,
+            )
+            # Re-read so the entity state reflects what the monitor actually did.
+            await self.async_update()
+            self.async_write_ha_state()
+            return
+        self._attr_current_option = option
+        self.async_write_ha_state()
+
+    async def async_update(self) -> None:
+        try:
+            monitors = await self._client.get_display_monitors()
+            for monitor in monitors:
+                if monitor["id"] == self._monitor_id:
+                    current = monitor.get("input_source")
+                    self._attr_current_option = current if current in self._attr_options else None
+                    break
+        except MediaServerError as err:
+            _LOGGER.error("Failed to refresh input source for monitor %d: %s", self._monitor_id, err)
+
+
+class DisplayColorPresetSelect(_DisplaySelectBase):
+    """Switch the monitor's color temperature preset (sRGB / 6500K / ...)."""
+
+    _attr_name = "Color preset"
+    _attr_icon = "mdi:palette"
+
+    def __init__(
+        self,
+        client: MediaServerClient,
+        entry: ConfigEntry,
+        monitor: dict[str, Any],
+    ) -> None:
+        super().__init__(client, entry, monitor)
+        self._attr_unique_id = f"{entry.entry_id}_display_color_preset_{self._monitor_id}"
+        self._attr_options = list(monitor.get("available_color_presets") or [])
+        current = monitor.get("color_preset")
+        self._attr_current_option = current if current in self._attr_options else None
+
+    async def async_select_option(self, option: str) -> None:
+        try:
+            result = await self._client.set_display_color_preset(self._monitor_id, option)
+        except MediaServerError as err:
+            _LOGGER.error("Failed to set color preset for monitor %d: %s", self._monitor_id, err)
+            return
+        if not result.get("success"):
+            _LOGGER.warning(
+                "Monitor %d rejected color preset %s (DDC/CI silently dropped)",
+                self._monitor_id, option,
+            )
+            await self.async_update()
+            self.async_write_ha_state()
+            return
+        self._attr_current_option = option
+        self.async_write_ha_state()
+
+    async def async_update(self) -> None:
+        try:
+            monitors = await self._client.get_display_monitors()
+            for monitor in monitors:
+                if monitor["id"] == self._monitor_id:
+                    current = monitor.get("color_preset")
+                    self._attr_current_option = current if current in self._attr_options else None
+                    break
+        except MediaServerError as err:
+            _LOGGER.error("Failed to refresh color preset for monitor %d: %s", self._monitor_id, err)
+
+
+class DisplayPictureModeSelect(_DisplaySelectBase):
+    """Switch the monitor's picture/scene mode via VCP 0xDC.
+
+    The server returns options as `[{code: int, label: str}, ...]`. We use
+    labels as the user-facing options and keep a label→code map for writes.
+    """
+
+    _attr_name = "Picture mode"
+    _attr_icon = "mdi:image-multiple"
+
+    def __init__(
+        self,
+        client: MediaServerClient,
+        entry: ConfigEntry,
+        monitor: dict[str, Any],
+    ) -> None:
+        super().__init__(client, entry, monitor)
+        self._attr_unique_id = f"{entry.entry_id}_display_picture_mode_{self._monitor_id}"
+
+        modes = monitor.get("available_picture_modes") or []
+        self._label_to_code: dict[str, int] = {
+            mode["label"]: mode["code"]
+            for mode in modes
+            if "label" in mode and "code" in mode
+        }
+        self._attr_options = list(self._label_to_code.keys())
+        current = monitor.get("picture_mode")
+        self._attr_current_option = current if current in self._attr_options else None
+
+    async def async_select_option(self, option: str) -> None:
+        code = self._label_to_code.get(option)
+        if code is None:
+            _LOGGER.error("Unknown picture mode label: %s", option)
+            return
+        try:
+            result = await self._client.set_display_picture_mode(self._monitor_id, code)
+        except MediaServerError as err:
+            _LOGGER.error("Failed to set picture mode for monitor %d: %s", self._monitor_id, err)
+            return
+        if not result.get("success"):
+            _LOGGER.warning(
+                "Monitor %d rejected picture mode %s (code %d) - monitor's DDC/CI"
+                " implementation of VCP 0xDC may be incomplete",
+                self._monitor_id, option, code,
+            )
+            await self.async_update()
+            self.async_write_ha_state()
+            return
+        self._attr_current_option = option
+        self.async_write_ha_state()
+
+    async def async_update(self) -> None:
+        try:
+            monitors = await self._client.get_display_monitors()
+            for monitor in monitors:
+                if monitor["id"] == self._monitor_id:
+                    current = monitor.get("picture_mode")
+                    self._attr_current_option = current if current in self._attr_options else None
+                    break
+        except MediaServerError as err:
+            _LOGGER.error("Failed to refresh picture mode for monitor %d: %s", self._monitor_id, err)

custom_components/remote_media_player/sensor.py

@@ -0,0 +1,76 @@
+"""Diagnostic sensors exposed per display (resolution, etc.)."""
+
+from __future__ import annotations
+
+import logging
+from typing import Any
+
+from homeassistant.components.sensor import SensorEntity
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.entity import EntityCategory
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
+
+from .api_client import MediaServerClient, MediaServerError
+from .const import DOMAIN
+from .display_device import display_device_info
+
+_LOGGER = logging.getLogger(__name__)
+
+
+async def async_setup_entry(
+    hass: HomeAssistant,
+    entry: ConfigEntry,
+    async_add_entities: AddEntitiesCallback,
+) -> None:
+    """Set up per-display sensor entities."""
+    client: MediaServerClient = hass.data[DOMAIN][entry.entry_id]["client"]
+
+    try:
+        monitors = await client.get_display_monitors()
+    except MediaServerError as err:
+        _LOGGER.error("Failed to fetch display monitors: %s", err)
+        return
+
+    entities = [
+        DisplayResolutionSensor(client, entry, monitor)
+        for monitor in monitors
+        if monitor.get("resolution")
+    ]
+
+    if entities:
+        async_add_entities(entities)
+        _LOGGER.info("Added %d display sensor entities", len(entities))
+
+
+class DisplayResolutionSensor(SensorEntity):
+    """Diagnostic sensor reporting the EDID-derived display resolution."""
+
+    _attr_has_entity_name = True
+    _attr_name = "Resolution"
+    _attr_entity_category = EntityCategory.DIAGNOSTIC
+    _attr_icon = "mdi:monitor-screenshot"
+
+    def __init__(
+        self,
+        client: MediaServerClient,
+        entry: ConfigEntry,
+        monitor: dict[str, Any],
+    ) -> None:
+        """Initialize the display resolution sensor."""
+        self._client = client
+        self._monitor_id: int = monitor["id"]
+        self._attr_native_value = monitor.get("resolution")
+        self._attr_unique_id = f"{entry.entry_id}_display_resolution_{self._monitor_id}"
+        self._attr_device_info = display_device_info(entry, monitor)
+
+    async def async_update(self) -> None:
+        """Refresh resolution from the server (rarely changes)."""
+        try:
+            monitors = await self._client.get_display_monitors()
+            for monitor in monitors:
+                if monitor["id"] == self._monitor_id:
+                    self._attr_native_value = monitor.get("resolution")
+                    break
+        except MediaServerError as err:
+            _LOGGER.error("Failed to refresh resolution for monitor %d: %s", self._monitor_id, err)

custom_components/remote_media_player/switch.py

@@ -5,14 +5,14 @@ from __future__ import annotations
 import logging
 from typing import Any
 
-from homeassistant.components.switch import SwitchEntity, SwitchDeviceClass
+from homeassistant.components.switch import SwitchDeviceClass, SwitchEntity
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.core import HomeAssistant
-from homeassistant.helpers.entity import DeviceInfo
 from homeassistant.helpers.entity_platform import AddEntitiesCallback
 
 from .api_client import MediaServerClient, MediaServerError
 from .const import DOMAIN
+from .display_device import display_device_info
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -51,6 +51,7 @@ class DisplayPowerSwitch(SwitchEntity):
 
     _attr_has_entity_name = True
     _attr_device_class = SwitchDeviceClass.SWITCH
+    _attr_name = "Power"
 
     def __init__(
         self,
@@ -62,33 +63,15 @@ class DisplayPowerSwitch(SwitchEntity):
         self._client = client
         self._entry = entry
         self._monitor_id: int = monitor["id"]
-        self._monitor_name: str = monitor.get("name", f"Monitor {monitor['id']}")
-        self._resolution: str | None = monitor.get("resolution")
         self._attr_is_on = monitor.get("power_on", True)
-
-        # Use resolution in name to disambiguate same-name monitors
-        display_name = self._monitor_name
-        if self._resolution:
-            display_name = f"{self._monitor_name} ({self._resolution})"
-
         self._attr_unique_id = f"{entry.entry_id}_display_power_{self._monitor_id}"
-        self._attr_name = f"Display {display_name} Power"
+        self._attr_device_info = display_device_info(entry, monitor)
 
     @property
     def icon(self) -> str:
         """Return icon based on power state."""
         return "mdi:monitor" if self._attr_is_on else "mdi:monitor-off"
 
-    @property
-    def device_info(self) -> DeviceInfo:
-        """Return device info."""
-        return DeviceInfo(
-            identifiers={(DOMAIN, self._entry.entry_id)},
-            name=self._entry.title,
-            manufacturer="Remote Media Player",
-            model="Media Server",
-        )
-
     async def async_turn_on(self, **kwargs: Any) -> None:
         """Turn the monitor on."""
         try: