The problem is that lib{e,}gl1 let lib{egl,glx}-vendor to fulfil the dependency, which apparently will pull the nvidia versions in some cases. The alternative depends needs to be dropped.
** No longer affects: xorg-server (Ubuntu) ** Package changed: mesa (Ubuntu) => libglvnd (Ubuntu) ** Changed in: libglvnd (Ubuntu) Status: New => Triaged ** Also affects: libglvnd (Ubuntu Bionic) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1770913 Title: Software rendering is forced after 18.04 upgrade (Intel Core 2 Duo P8600 / GMA 4500MHD) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libglvnd/+bug/1770913/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs