LibRemote: Unterschied zwischen den Versionen
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'''LibRemote''' is a small computer running Ubuntu 22.04.1 LTS that's installed in the network rack in the Metalab library. It is connected to the HDMI switch (port 5). | |||
It's a [https://support.hp.com/us-en/document/c06045012 HP EliteDesk 800 G4-Desktop-Mini-Business-PC 35W] ([http://h10032.www1.hp.com/ctg/Manual/c06063157 Maintenance and Service Guide]). | It's a [https://support.hp.com/us-en/document/c06045012 HP EliteDesk 800 G4-Desktop-Mini-Business-PC 35W] ([http://h10032.www1.hp.com/ctg/Manual/c06063157 Maintenance and Service Guide]). | ||
= Use cases = | == Use cases == | ||
* Make presentations on the projector without an HDMI connection. | * Make presentations on the projector without an HDMI connection. | ||
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* Make a screen recording of an HDMI source (like a notebook). | * Make a screen recording of an HDMI source (like a notebook). | ||
= Warnings = | == Warnings == | ||
{| | {| | ||
|bgcolor="#ffa500"|<div style="border:2px dotted #ff4500;color:black;line-height:2.1em;padding: | |bgcolor="#ffa500"|<div style="border:2px dotted #ff4500;color:black;line-height:2.1em;padding:0.8em;"> | ||
''' | ''' | ||
This is a public device! Do not store anything needing privacy on this device. Do not enter any passwords on this device (other than its own login password of course). | This is a public device! Do not store anything needing privacy on this device. Do not enter any passwords on this device (other than its own login password of course). | ||
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|} | |} | ||
= Usage Instructions = | == Usage Instructions == | ||
The computer's IP is <code>10.20.30.111</code> and the DNS | The computer's IP is [http://10.20.30.111 <code>10.20.30.111</code>] and the DNS name is [http://libremote.lan <code>libremote.lan</code>]. | ||
To remote control the computer, connect to '''http://10.20.30.111'''. The login is '''metalab/metalab'''. | |||
After logging in, you're going to see these items: | |||
{| | |||
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* Remote Shell | |||
* Desktop Session | * Desktop Session | ||
* Set to Extend Mode | * Set to Extend Mode | ||
* Set to Mirror Mode | * Set to Mirror Mode | ||
* Shutdown | * Shutdown | ||
|} | |||
Remote Shell is simply a connection for a terminal via | * ''Remote Shell'' is simply a connection for a terminal via SSH within the web browser. | ||
* ''Desktop Session'' starts screen sharing within the web browser.<br /> | |||
Desktop Session starts screen sharing within the web browser. There are two ways this works, which you can set with the other two items: | There are two ways this works, which you can set with the other two items: | ||
* ''Extend Mode'': A virtual screen is added to the machine, which is then shown in the browser. The mouse in the browser can only access this screen, but apps can display things on the screen shown on the projector as well. This is useful for presenter's displays and streaming displays (like the OBS interface). | |||
* ''Mirror Mode'': The screen visible on the projector is also shown in the web browser. Remote mouse and keyboard work as expected. | |||
* Extend Mode: A virtual screen is added to the machine, which is then shown in the browser. The mouse in the browser can only access this screen, but apps can display things on the screen shown on the projector as well. This is useful for presenter's displays and streaming displays (like the OBS interface). | Activating one of these modes applies for a new connection, an existing connection remains unaffected. | ||
* ''Shutdown'' shuts down the computer directly from this interface (executes <code>sudo shutdown -h now</code> in a terminal). You can also shut it down from the UI in screen sharing mode (there's a warning that another user is connected, but that's yourself so that's fine). | |||
Note that you can also use a regular '''RDP client''' on your own device instead of the web application. The login information is the same, the IP is <code>10.20.30.111</code> and the port is 3389 (the default). This was tested on the [https://apps.apple.com/us/app/remote-desktop-mobile/id714464092 Remote Desktop Mobile] app by Microsoft on an iPad. | |||
VNC is supported, the IP is <code>10.20.30.111</code> and the port is 5900 (the default). You can use your own favourite VNC Client to connect to the device. Password is 'metalab'. < | '''VNC''' is supported, the IP is <code>10.20.30.111</code> and the port is 5900 (the default). You can use your own favourite VNC Client to connect to the device. Password is '''metalab'''. <small>('''Attention:''' GNOME Remote Desktop does not support Extend Mode with VLC, use the web client for that feature!)</small> | ||
== HDMI Input == | == HDMI Input == | ||
The computer has a USB HDMI capture card attached | The computer has a USB HDMI capture card attached, available as /<code>dev/video0</code> and verified accessible from OBS and VLC. It's attached to '''output B''' of the library HDMI switch. | ||
The idea is that you can use this device to capture a screen recording from a notebook attached to the projector setup without having to change anything on the notebook itself. This also means that it can capture video from anything attached to HDMI, like a game console or a mobile phone. | The idea is that you can use this device to capture a screen recording from a notebook attached to the projector setup without having to change anything on the notebook itself. This also means that it can capture video from anything attached to HDMI, like a game console or a mobile phone. | ||
For proper operation | For proper operation the video format has to be set to ''''Motion JPEG'''', resolution '''1920x1080''', framerate '''30 fps''' (60 fps doesn't work unfortunately). Color range is recommended to be set to '''full'''. | ||
Note that you can only capture the same output shown on the projector, so if you set the HDMI switch's output to the | Note that you can only capture the same output shown on the projector, so if you set the HDMI switch's output to the LibRemote computer, you get a magic mirror effect if you display the video stream in a window. | ||
= Installed Applications = | == Installed Applications == | ||
* OBS (Streaming application, can be used in Extend Mode to do PiP, show only a single window or do other fancy stuff. Can also do screen or HDMI capture recordings.) | * '''OBS''' (Streaming application, can be used in Extend Mode to do PiP, show only a single window or do other fancy stuff. Can also do screen or HDMI capture recordings.) | ||
* LibreOffice Impress (like PowerPoint) | * LibreOffice '''Impress''' (like PowerPoint) | ||
* Terminal | * '''Terminal''' | ||
* VLC (for video/audio playback and streaming) | * '''VLC''' (for video/audio playback and streaming) | ||
Suggestions for other applications useful for this device are welcome! | Suggestions for other applications useful for this device are welcome! | ||
= Ansible Script = | == Ansible Script == | ||
The | The setup can be automatically deployed by an Ansible script. | ||
The | The repo can be found here: https://github.com/Metalab/Ansible-Libremote | ||
= Changelog = | == Changelog == | ||
* … | |||
02.01.2023 - [[Hetti]] implemented the full web client remote desktop capability deployment in Ansible. | * 02.01.2023 - [[Hetti]] implemented the full web client remote desktop capability deployment in Ansible. | ||
02.01.2023 - [[Hetti]] & [[Benutzer:Anlumo]] implemented the HDMI | * 02.01.2023 - [[Hetti]] & [[Benutzer:Anlumo|Anlumo]] implemented the HDMI audio fix, added tweaks and deployed on a fresh Ubuntu 22.04 installation. | ||
* ??.12.2022 - [[Benutzer:Anlumo|Anlumo]] manually configured and tested out the Gnome-Remote-Desktop capabilites of Ubuntu 22.04 in combination with Guacamole Server and Guacamole Client + Tomcat | |||