Screen Share: Remote Shadow & Control

VNC: Remmina / Vino

Installed on thinlinc and available for all major linux distros.

Thinlinc:

• [host] share screen: Applications > Remote Desktop > Desktop Sharing

  • [on] Allow other users to view your Desktop.
  • [on] Allow other users to control your Desktop.

• [guest] join screen share: Applications > Remote Desktop > Remmina

• The [host] has to accept the join request.
• After saving the user - for future sessions just doubleclick the username.

FAQ

• Q: I am the host, I want to disconnect all guests!

  • A: [host] Click on the 'Desktop Sharing' icon in the top panel and choose Disconnect <user>.

• Q: Fast way to join on a screen share?

  • A: [guest] Check the Remmina symbol in the top panel. Click on it and you'll see all your saved buddies.

• Q: The name of my colleague does not appear in the chooser list!

  • A: [host] Let the colleague open a terminal and type: vino.sh - this will restart the 'Desktop Sharing'.

• Q: Double click on the colleague's name opens the window and shows Can't connect!

  • A: [guest] Stop Remmina and start again. Explanation: if the colleague logs off from thinlinc and logs in again, a new server might be assigned. With restarting Remmina, the buddies list is updated with the latest server/buddy pairs.

• Q: Sharing is fine, but the window is too big - it should be scaled!
  • A: [guest] On the left side switch on 'Toggle Scale Mode'
• Q: The [host] says there is no 'screen share request' to acknowledge!
  • A: [host] Sometimes the window with the screen share request is in the background - look at the bottom task list for a window with 'bold' text, click on it and it comes to the front.

hello.math.uzh.ch / RocketChat

• Install https://rocket.chat/install App

• Server: hello.math.uzh.ch
• Account: I-MATH username/password
• Only shadow, no remote control.

Start:

• Start a voice call via RocketChat.

• Click on 'screen share'

Skype

• Install Skype client.
• Create / use your Microsoft Account
• Only shadow, no remote control.

Start:

• Start a voice call via Skype.
• Click on 'screen share'

iPad

• Overview: 1, 2

• Native AirPlay: https://support.apple.com/en-us/HT204289

• Quicktime

• Commercial:

  • letsview

  • AirServer

  • Zoom - be carefull, Zoom might block the microphone for other applications, sometimes even a reboot is necessary to get back access to the microphone for other applications.

iPad > Linux

• https://github.com/FD-/RPiPlay (https://github.com/antimof/UxPlay)

[user@ubuntu20.04]
$ sudo apt-get install cmake libavahi-compat-libdnssd-dev libplist-dev libssl-dev libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev gstreamer1.0-libav gstreamer1.0-vaapi gstreamer1.0-plugins-bad

$ git clone https://github.com/FD-/RPiPlay.git
$ cd RPiPlay
$ mkdir build; cd build; cmake ..
$ make
$ sudo make install

# On problems it might help to install:
$ sudo apt install ubuntu-restricted-extras vlc

# Start
$ rpiplay

• On the iPad, share the screen: https://support.apple.com/en-us/HT204289.

  • Select rpiplay as destination (is only shown as long as on the Linux host the program rpiplay is running)

• On the linux host a window pops up.

• A compiled version of rpiplay for Linux Ubuntu 20.04 is available under https://drive.math.uzh.ch/index.php/s/ek3oFfHb4Z9zaYt

Android Tablet

Problem

Mac OS X Catalina / 10.15

Each applications needs the screen record privilege: https://help.daily.co/en/articles/3400532-enable-screen-recording-permission-for-macos-catalina-10-15-and-later