Power uvc_device for 1 second after creation

src/ds/d400/d400-color.cpp

@@ -93,6 +93,9 @@ namespace librealsense
                 std::unique_ptr<frame_timestamp_reader>(new global_timestamp_reader(std::move(ds_timestamp_reader_metadata), _tf_keeper, enable_global_time_option)),
                 this);
 
+            // Many commands need power during initialization phase, no point turning it on and off again for each.
+            raw_color_ep->power_for_duration( std::chrono::milliseconds( 1000 ) );
+
             auto color_ep = std::make_shared<d400_color_sensor>(this,
                 raw_color_ep,
                 d400_color_fourcc_to_rs2_format,

src/ds/d400/d400-device.cpp

@@ -509,6 +509,9 @@ namespace librealsense
 
         raw_depth_ep->register_xu(depth_xu); // make sure the XU is initialized every time we power the camera
 
+        // Many commands need power during initialization phase, no point turning it on and off again for each.
+        raw_depth_ep->power_for_duration( std::chrono::milliseconds( 1000 ) );
+
         auto depth_ep = std::make_shared<d400_depth_sensor>(this, raw_depth_ep);
 
         depth_ep->register_info(RS2_CAMERA_INFO_PHYSICAL_PORT, filter_by_mi(all_device_infos, 0).front().device_path);

src/ds/d500/d500-color.cpp

@@ -83,6 +83,9 @@ namespace librealsense
                                              enable_global_time_option ) ),
             this );
 
+        // Many commands need power during initialization phase, no point turning it on and off again for each.
+        raw_color_ep->power_for_duration( std::chrono::milliseconds( 1000 ) );
+
         auto color_ep = std::make_shared<d500_color_sensor>(this,
             raw_color_ep,
             d500_color_fourcc_to_rs2_format,

src/ds/d500/d500-device.cpp

@@ -375,6 +375,9 @@ namespace librealsense
 
         raw_depth_ep->register_xu(depth_xu); // make sure the XU is initialized every time we power the camera
 
+        // Many commands need power during initialization phase, no point turning it on and off again for each.
+        raw_depth_ep->power_for_duration( std::chrono::milliseconds( 1000 ) );
+
         auto depth_ep = std::make_shared<d500_depth_sensor>(this, raw_depth_ep);
 
         depth_ep->register_info(RS2_CAMERA_INFO_PHYSICAL_PORT, filter_by_mi(all_device_infos, 0).front().device_path);