Troubleshooting Tips and Questions

The virtual classroom is currently supported in Google Chrome (version 51 and newer). It uses port 443 for video stream, thus port 443 must be open on the client network. Also, add-blocks can interfere with the classroom so make sure is turned off.

  • I don’t hear the instructor.

    Reload the web browser (Ctr-r/Cmd-r). Also, make sure that your web-browser is updated and the add-block is turned off. Check if the audio is not turned off inside the virtual class.

    virtual classroom user guide audio

  • The video stream is not working.

    Reload the web browser (Ctr-r/Cmd-r). Also, make sure that your port 443 is open for video stream, web-browser is updated and the add-block is turned off. Check if the stream is not turned off inside the virtual class.

    virtual classroom user guide video

  • The instructor is on slide x, but I see slide y.

    Toggle the "Follow Presenter" slider switch on (located on the upper left right below your profile).

  • The IP from the Lab Environment does not work anymore.

    The IP from the Lab Environment can be updated, just check if it is still the same.

  • The video is frozen.

    Reload the web browser (Ctr-r/Cmd-r). Also, make sure that your web-browser is updated and the add-block is turned off.

  • There is a message to update.

    Reload the web browser (Ctr-r/Cmd-r), so the virtual classroom can be updated.

  • I reloaded and still the video/sound stops after a while.

    Contact the instructor, as other options of streaming are available.

  • The Lab Environment is not loading.

    Click on the gear and on "restart machine" (located on the top left next to your profile picture), it will take up to 15 minutes until the machine restarts. If you still can not load it, contact the instructor.

  • How long is the virtual classroom available after the end of the course?

    Each course closes in a different time, please contact the instructor.

  • I am having problems to solve the practical exercises, what should I do?

    During the course you can request help from your instructor and work side by side with the instructor.


UI Overview

virtual classroom user guide ui

  • Profile - The profile represents how the instructor and other students see you in the classroom environment, you can change your display name and picture.

  • Toggle to Follow - "Follow Presenter" toggle to sync with the instructor’s presentation.

  • Presentation - Presentation with selectable text and clickable links. You can follow the instructor or browse the slides at your own pace.

  • Text Board - A board where the instructor can share textual information.

  • Code Snippets - Code snippets are pieces of code that the instructor can share. You can always view them and use during lab time.

  • Share Screen - View the instructor’s lab, full desktop screen or specific applications.

  • Lab Environment - Hands on practice lab. The lab comes equipped with a terminal and a code editor connected to a cloud server.

  • Help - Click to access available information of the Virtual Classroom.

  • Video Panel - The video stream source is dynamic and depends on the instructor’s configuration. It can be the instructor’s video feed, a student who asked to speak or a split feed while in a one on one session.

  • Chat - The built-in chat client supports both private and public chat rooms. Use it to communicate with the instructor and other students.

Notes: When you are not following the instructor’s presentation (often happens when you change to another area of the course) a sign will be displayed. In order to continue to follow the presentation just toggle the switch.

virtual classroom user guide not following


Chat Tips

It is available public and private text chat in the virtual classroom platform, audio chat is not supported.

  • How to start/view messages

    1. Click on the icon of a person, located on the top right under the video panel.

    2. Click on "Public" for public chat or on the name of the person.

      virtual classroom user guide chat view

      When you are in the private chat the name of the person will show on the left top of the chat box.

      virtual classroom user guide chat private

  • Public chat good practices

    During the course the instructor asks the students to use the following characters for better feedback:

    virtual classroom user guide chat sign

    • + - Sign the instructor you are (following/agreeing)

    • q - Type a "q" before a question, so you have time to elaborate your question and the instructor wait for it.


Lab Environment

The lab environment is a linux virtual machine.

  • How to access the Lab Environment

    Click on the "My Lab" button

    virtual classroom user guide lab env

  • Lab instructor help

    During the course, if needed, you can request help from your instructor and work side by side with the instructor. When an instructor is in your Lab Environment you can see the following sign:

    virtual classroom user guide lab trainer


Home directory

Your files are located under "Home directory". You can find your "Home directory" executing the command "pwd" in the terminal.

virtual classroom user guide pwd


How to open a new Terminal

  1. Click on the "My Lab" button.

  2. Click on "+" sign.

virtual classroom user guide lab terminal


File Editor

You can use the terminal to manage files, as "nano" and "vim" are available. Another tool provided is an embedded editor in the Virtual Classroom.

  • How to Open the editor

    1. Click on the "My Lab" button.

    2. Click on "Editor" button, located in the top of the page.

      virtual classroom user guide editor open

  • Editor UI

    virtual classroom user guide editor

    • New - Open a new tab with a file.

    • Open - Open a file (default directory is the root).

    • Save - Save the file.

    • Save as - Save the current file with a new name/location.

  • How to Save a file

    After clicking "Save" (located on the top) a dialog will open.

    1. Select the directory where the file will be saved (default directory is the root).

    2. Change the file name and the extension.

    3. Click on "Save".

      virtual classroom user guide editor save


How to open Kibana

  1. Open the Lab Environment.

  2. Click on the gear, located on the top left next to your profile picture.

  3. Select "Connect from Local" from the menu list.

  4. Copy (Ctrl-c/Cmd-c) the IP from the "Remote Access" panel.

  5. Open a new tab on your browser.

  6. In the new tab address bar, paste the IP that you copied.

  7. Click on the Kibana link to open it.

Notes: optionally you can copy the IP by double clicking the address under "My Lab" and copying (Ctrl-c/Cmd-c).

virtual classroom user guide lab ip

virtual classroom user guide lab copy ip

virtual classroom user guide kibana tab

How to open the Instructions

  1. Open the Lab Environment.

  2. Click on the gear, located on the top left next to your profile picture.

  3. Select "Connect from Local" from the menu list.

  4. Copy (Ctrl-c/Cmd-c) the IP from the "Remote Access" panel.

  5. Open a new tab on your browser.

  6. In the new tab address bar, paste the IP that you copied.

  7. Click on the instructions link to open it.

Notes: optionally you can copy the IP by double clicking the address under "My Lab" and copying (Ctrl-c/Cmd-c).

virtual classroom user guide lab ip

virtual classroom user guide lab copy ip

virtual classroom user guide instructions tab


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