update

docs/v2.md

@@ -182,6 +182,14 @@ After turning on the power, PiKVM OS generates unique SSH keys and certificates
 **Do not turn off the device until it's fully booted for the first time.**
 
 
+-----
+## Configure the display
+
+The operating system on your remote computer will treat PiKVM as an additional display and use it in the Extend mode by default. That's why you will see an empty desktop when you first connect.
+
+To avoid that, go to the display settings in your remote computer's operating system and enable the mirror mode for the external screen that you operating system identifies as PiKVM. Refer to your operating system's documentation on that.
+
+
 -----
 ## Access PiKVM
 
@@ -283,7 +291,32 @@ To do that:
 
 - Get to know PiKVM OS: read [this help section](webui.md) to better understand all the possibilities of the web user interface.
 
-- Set up [ATX connection](atx_board.md) if you need to control the power of the remote system.
+- ??? note "Note for the HDMI-USB dongle"
+
+    Many USB video capture devices tell the server's video card that the HDMI cable is supposedly disconnected.
+    This may lead to the fact that if you boot the server without an active stream, the server will not detect
+    your capture card. This is easy to fix:
+
+    * Switch filesystem to RW-mode:
+        ```console
+        [root@pikvm ~]# rw
+        ```
+
+    * Edit file `/etc/kvmd/override.yaml` and add these lines:
+        ```yaml
+        kvmd:
+            streamer:
+                forever: true
+                cmd_append: [--slowdown]
+        ```
+
+    * Finish:
+        ```console
+        [root@pikvm ~]# ro
+        [root@pikvm ~]# systemctl restart kvmd
+        ```
+
+    * Check that everything is working.
 
 
 -----