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The package libtxc-dxtn-s2tc has been removed from later versions of Ubuntu, therefore I am going to mark this bug as invalid for Steam. ** Changed in: steam (Ubuntu) Status: Confirmed => Invalid -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to mesa in Ubuntu. https://bugs.launchpad.net/bugs/1684755 Title: Missing dependency to libtxc-dxtn-s2tc:amd64 Status in mesa package in Ubuntu: New Status in steam package in Ubuntu: Invalid Bug description: Steam is missing a dependency to libtxc-dxtn-s2tc:amd64 How to reproduce: - Install steam from the Ubuntu repositories - Use the mesa drivers - Download a game that requires GL_EXT_TEXTURE_COMPRESSION_S3TC (e.g. Dota 2) - Steam throws an error on game start Workaround: - Install libtxc-dxtn-s2tc:amd64 https://github.com/ValveSoftware/Dota-2/issues/1213 Release: Ubuntu 17.04 Package: steam:i386 (1:1.0.0.54+repack-2ubuntu5) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/1684755/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp