lewashby Junior Poster 668 posts since Oct 2009 Reputation Points: 0 [?] Q&As Helped to Solve: 2 [?] Skill Endorsements: 0 [?] •Community Member 0 2 Years Ago Note that I am using MinLinux. I'M trying to launch Team Fortress 2 from Valve's Steam and I'M getting the following error. Required OpenGL extension "GL_texture_compression_s3tc" is not supported. Please install S3TC texture support. I checked my Synaptic Package Manager and I already have the following two packages installed when I enter s3tc into the text field of the SPM. libtxc-dxtn-s2tc-bin & libtxc-dxtn-s2tc0 The only one listed as not installed was libtxc-dxtn-s2tc-dev Any ideas? Thanks.