I'm looking to use ZeroRadiant to work on ubuntu, it's to create maps on urban terror, I know that works on windows and mac. I found this HOWTO but could not make it work. I've got stock on this when I do. ~/ZeroRadiant-src$ scons target=radiant,q3map2 config=release at the end shows me this: collect2: ld returned 1 exit status scons: *** [build/release/radiant/radiant.bin] Error 1 scons: building terminated because of errors. there's a note on the how to that says: If you get other errors, you may try asking for help in the GtkRadiant IRC channel, which is listed on the main ZeroRadiant page. the page does not there and I could find that IRC channel. EDIT thanks to @jokerdino in the chat sow me this If you have the proprietary NVIDIA driver installed and you get the following error when executing the build target above: /usr/bin/ld: cannot find -lGL collect2: ld returned 1 exit status scons: *** [build/release/radiant/radiant.bin] Error 1 scons: building terminated because of errors. then you should install one of the nvidia-glx-dev* packages as mentioned above in Step A, then try to execute the main build target to compile GtkRadiant again. I don't have nvidia; I do have ATI AMD Radeon HD 6320, and looks like it works. GL_VERSION: 4.1.11251 Compatibility Profile Context GL_VENDOR: ATI Technologies Inc. GL_RENDERER: AMD Radeon HD 6320 Graphics I'm think I do have video issues but.. how do I detect this? how can I continue?