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Make sure you have installed the VirtualBox Extensions within your VM After that you should just be able to pick the resolution you need. Also check the Virtual Video Adapter you have selected in the VM's setup. Maybe you need to try the different options there, &amp; maybe add some virtual Video RAM &amp; enable 3D etc.
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Fractional CTO

David Favor

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i did install the extension
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If the Extension is properly installed, you can also just resize the Window by picking it up at corner with your mouse, and it should adjust automagically.
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chalie001

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hi how can i increase size<br><a href="https://filedb.experts-exchange.com/incoming/2021/07_w28/1565738/increasesize22.jpg" rel="ugc"><img src="https://filedb.experts-exchange.com/incoming/2021/07_w28/1565738/increasesize22.jpg" class="fr-fic fr-dib"></a>
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increasesize22.jpg

how to increase size in ubuntu

Linux is a UNIX-like open source operating system with hundreds of distinct distributions, including: Fedora, openSUSE, Ubuntu, Debian, Slackware, Gentoo, CentOS, and Arch Linux. Linux is generally associated with web and database servers, but has become popular in many niche industries and applications.

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Ubuntu is an open source software operating system that runs from the desktop, to the cloud, to all your internet connected things.

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