Ubuntu VM Display Appears Pixelated or Corrupted in Lab Environment
VM Is Unresponsive
In some instances, an individual VM may become stuck or unresponsive. This can be caused by a large number of things (Connectivity issues, software updates, user input). In the lab environment, users can reset a specific Virtual Machine (VM) without restarting the entire lab session. Here’s how:
⚠️Please refresh the browser. If this does not resolve your issues, proceed to Step 1 below.
1. Click the Computer Icon located at the top/center of the user interface to view the dropdown menu. ⚠️If multiple VMs are available, ensure the correct one is selected from the Resources Tab. The VM title is also located at the top of the console area.
2. This menu may have options such as Restart, Reset, Power Off, or Power On.
Click Reset (or similar, depending on the lab configuration)
3. Confirm any prompts asking whether you want to proceed.
4. Various boot screens may appear. Avoid interacting with any of the booting screens, the boot process will complete automatically.
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Relaunching
In many instances, canceling the lab and relaunching can fix issues within the lab environment.
- Click Save & Exit at the top right.
- Click End lab if you do not need to save any progress.
- On the End Lab prompt, click Cancel my lab > Click OK > Click Close Window
- Relaunch the lab 🚀
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Browsers
- Test multiple browsers.
- Make sure the browser does not have any third party apps or plugins that are interfering with the page. Such as pop-up blockers.
- If the equipment was issued to you by your organization, the screen resolution may be too low for ideal operation and performance.
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Connection
If you are experiencing issues in your lab such as, slow response time, lag in typing, or disconnections you should check the quality of your internet connection to the lab servers. This information will let you know if there is something happening with your connection and will assist the Support Team in identifying a possible cause.
- Complete a speed test here
- Save these details in case you need to share with the Support Team
- Save these details in case you need to share with the Support Team
- Check the quality of the active connection, click here
- Click here to review connectivity troubleshooting steps
- Connectivity requirements are listed here
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Latency
Latency measures the network latency between your browser and the server where the VMs are hosted. This is the last latency value received from the your machine. Large latency values may cause your lab to seem sluggish or even non-responsive. The issue may be with your network, internet provider, the overall internet health, or the lab host. If these conditions persist, please troubleshoot your connection or test another network when possible.
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Other Connectivity Solutions
Using these tips can help to mitigate or minimize connectivity issues between your computer and the lab environment.
- Work Issued Device: If you are using a work issued device, please try using a personal device instead. Your company device could have built in protocols that could prohibit access to remote sessions, causing connection issues to your labs.
- Managed Network: If the lab is being run through a managed network through your Work or school, please review our Connectivity Requirements and have your IT department look over all the necessary requirements.
- VPN/Proxy: While you can have success with VPN's, they are not recommended as certain configuration requirements must be met to avoid issues properly connecting with the lab: Proxy Requirements.
- Use a hardwired connection: Hotspots, Wi-Fi, cellular, and satellite internet typically have higher latency and can cause packet loss, which can result in a poor lab experience.
Review your security software: Turn off any third-party anti-virus programs, pop up blockers, add blockers, Etc. - Review your network: Port 443 must be open for inbound and outbound traffic. Additional firewall exceptions may be needed. Please review our Connectivity Requirements.
Reset your local Network: Power cycle your modem and router.
Confirm your bandwidth: The minimum Speed for labs is 200kbps up and down consistent/1mbps burst, Per user. - Try a different browser: Some browser extensions can cause certain aspects of our lab environments to not load correctly.
- Try a different computer: Some work-issued computers have built-in software that cannot be disabled, sometimes this software interferes with connection to our service. If possible, please try a personal computer.
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