Screen does not refresh properly after a few days (Ubuntu 20.04 guest)

Discussions about using Linux guests in VirtualBox.
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AlexisWilke
Posts: 28
Joined: 11. Mar 2021, 19:25

Screen does not refresh properly after a few days (Ubuntu 20.04 guest)

Post by AlexisWilke »

I have a Ubuntu 18.04 on which I run VirtualBox.

I created an Ubuntu 20.04 guest, including X11.

After a few days, the guest window environment breaks down. Mainly the windows title bars do not render and the icons on the left side disappear, the menu at the top, sub-menus in chrome (blank)... I'm attaching a screenshot which should give an idea of how it looks...

So the system becomes unusable. I tried to close windows and reopen or iconify things (which at times work in such situations). Nothing fixes the issues.

Anything that can be done to repair this issue?

One things I've done is turn off the screensaver and that seems to help make it last longer, but it still dies after a few days... rather inconvenient. Rebooting fixes all the issues for the next few days.
Attachments
Screenshot of top-left part of screen
Screenshot of top-left part of screen
vb-guest-bad-rendering.jpg (58.38 KiB) Viewed 1317 times
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