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Bizo1324 avatar Ubuntu

VM guest addition full screen problem

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Bizo1324

copy from my post on reddit.

virtualbox version: 6.1.26 host: windows 10 guest: ubuntu 20.04 lts

hi, my vm changed to small screen size and not full, i did not change anything. this is the second time this happen and i have no idea why. few hours ago i could change to full-screen from view but now even this not working and i didnt change anything. i cant find the steps i did last time to fix this (last time i had another problem so i dont think this will work now) and anyway i want to fix this permanently.

i tried few stuff that did not help: change vram to 128mb, enable 3d, many codes in terminal that i dont remember, eject from vm or unmount from virtualbox, i tried to update virtualbox and install the last guestaddition but when i install the previous version uninstall fail and i get this (required file filelist not found) but i still have the disk icon on task bar. i tried few codes to remove this manually but i get the same error.

edit: i changed the graphics controller to VBoxVGA and i have full screen (sometimes i need to change to full screen from the view options) but from what i read VMSVGA is better for linux and i still cant copy paste from host to vm or vice versa.

i hope someone here can help or i have to backup and delete this vm and install older version of ubuntu because i dont have this problem in my older version (the older have another problem so i decided to try the new one).

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Takkat
Here is how to see if guest additions are loaded: https://askubuntu.com/questions/169024/how-can-i-tell-if-the-virtualbox-guest-additions-were-installed-on-an-ubuntu-vm. If not they should be mounted **and installed** to resolve your issue.
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Random Person avatar
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Random Person
Originally posted here: https://www.reddit.com/r/virtualbox/comments/paqnbj/guest_addition_full_screen
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Bizo1324 avatar
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Bizo1324
@Takkat when i use the lsmod command i get this: vboxguest 45056 0. when i mount and install, the uninstall of the previous version fail and i get this: "required file filelist not found" image: https://ibb.co/xHYq0Qr.
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