Solution for ubuntu 20.04 Parallels Tools installation error
On my Mac, The install.sh informed me that installation failed because it couldn't install gcc and dkms.
Run these commands in terminal:
"sudo apt-get install gcc"
"sudo apt-get install dkms"
This will take about 30min to 1h.
Then run the "install-gui" or "install.sh"
Then everything is right.
The Parallels Tools will be installed on Ubuntu.
I am using Parallels 15 on macOS 10.15, So I am not sure if this solution can work on other versions.
Hope this can help you.
Oh... I'm using Parallels 15 and this worked for me. Maybe it only works on Parallels 15?