Running AC on Xubuntu?

[tempest]

To solve the first issue, open assaultcube.sh in a text editor and change

[SELECT ALL] Code:

#SYSTEM_NAME=Linux
SYSTEM_NAME=`uname -s`

to

[SELECT ALL] Code:

SYSTEM_NAME=Linux
#SYSTEM_NAME=`uname -s`

For the second one, make sure you have the proprietary drivers for your graphics card installed.