I just set up a new virtual machine. The host machine is running on Ubuntu 14.04.5 LTS. I installed 18.04 on the guest machine. I'm using virtual-box 4.3.36. The first time booting the guest machine worked just normal. In that session I did very few things:
sudo apt-get install linux-headers-generic build-essentialas suggested to be by @N0rbert in this question, that I asked before about a different Problem
- Install guest-additions
- Reboot machine
Now after this reboot, unfortunately nothing happened. Instead the following blackwindow appeared:
So I tried fixing it, by using a Boot-Repair-disk, which didn't change a thing. So afterwards my next step was to try to fix it, using the suggestions in this question. Here the Problem is, that I just can't do what the answerer suggests there. First I can't install a new virtual box version, because I'm not admin on the host machine. Second: When I press Host+F1 in guest machine, nothing happens.
Can anyone suggest any other fixes? Thanks in advance.
EDIT: Btw the only reason I even set up a new virtual machine was because the one that I already had set up was not working anymore. I'm using different host-machines every day (and I can't change that unfotunately) and the machine that I had set up on the one day didn't work on the other day. So I thought it's because of the host machine and I installed a new guest machine which then turned out to not be working, either.
EDIT 3: As requested here's the link to the output of boot-repair.