nvidia-331 recommends nvidia-prime, which is needed in order to get hybrid graphics to work.
This said, I've just found out that simply rebuilding hwloc generates a libhwloc-plugins package with the correct dependencies: Depends: libc6 (>= 2.4), libltdl7 (>= 2.4.2), libopencl-1.1-1, libpciaccess0, libxml2 (>= 2.7.4), ocl-icd-libopencl1 (>= 1.0) | libopencl1, libhwloc5 This will make sure that libhwloc-plugins does the right thing by pulling in ocl-icd-libopencl1. ** Also affects: hwloc (Ubuntu) Importance: Undecided Status: New ** Changed in: hwloc (Ubuntu) Status: New => In Progress ** Changed in: hwloc (Ubuntu) Importance: Undecided => High ** Changed in: hwloc (Ubuntu) Assignee: (unassigned) => Alberto Milone (albertomilone) ** Changed in: nvidia-graphics-drivers-331 (Ubuntu) Status: Confirmed => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1401390 Title: apt-get install nvidia-331 triggers 691 packages to be installed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/hwloc/+bug/1401390/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs