When installing Linux Mint (verified on 20.3), on a StarBook with Intel Xe Graphics, you will see the following message post-installation.
"Check your video drivers.
Your system is currently running without video hardware acceleration.
You may experience poor performance and high CPU usage.
Launch Driver Manager."
As Linux Mint 20.3 currently installs with kernel 5.4, you will need to install kernel 5.8 or later for the Intel Xe Graphics to function correctly.
To correct this, you can install a later kernel via the Update Manager. In
Update Manager select the
view option and then
Linux kernels. For the StarBook, you can use the latest supported kernel version, but this will need to be above 5.8. Once installed, reboot for the changes to take effect.