DataStax Academy FAQ

DataStax Academy migrated to a new learning management system (LMS) in July 2020. We are also moving to a new Cassandra Certification process so there are changes to exam bookings, voucher system and issuing of certificates.

Check out the Academy FAQ pages for answers to your questions:


question

kadnan_172698 avatar image
kadnan_172698 asked Erick Ramirez commented

VM image of Academy course DS201 shows blank screen

I am using VirtualBox 6.x, I loaded up OVA file but it keeps showing a blank screen. What should I do?

academyds201
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I have exactly the same problem. No idea how to fix it!

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kadnan_172698 avatar image kadnan_172698 rafal.sroka.it_190557 ·

I reinstalled the image file and then did not resize the main window. Or you can resize it to Scale as given in menu. It works then.

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1 Answer

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Erick Ramirez answered Erick Ramirez commented

It sounds like your download is somehow corrupted. I've just downloaded it myself and it loads up in VirtualBox just fine.

Please download it and try again. Cheers!

UPDATE - I managed to track it down. This isn't an issue with the VM itself but the laptop or desktop where you're running VirtualBox, particularly on machines where it doesn't have a lot of CPU-processing power.

When you import the VM image, 3D acceleration is enabled by default:

Machines sometimes can't handle this correctly and end up displaying a blank screen. The workaround is to disable 3D acceleration in the settings (uncheck it in the "Display" tab):

This should stop VirtualBox from loading a black screen when you start the VM. Cheers!


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c4732-settings.png (262.9 KiB)
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The image is fine, I re-installed the image and it does show the screen but when I close and restart VM it again shows blank screen. It shows desktop of Ubuntu for the very first time

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@kadnan_172698 @rafal.sroka.it_190557, I figured out the problem with VirtualBox. I've updated my answer with a workaround. Cheers!

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