The kernel in precise-proposed fixes this for me. $ cat /proc/version_signature Ubuntu 3.2.0-87.125-generic 3.2.69
$ df | head -3 Filesystem 1K-blocks Used Available Use% Mounted on /dev/vda1 7481832 5146416 1955360 73% / udev 371920 4 371916 1% /dev -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1465322 Title: regression: "df: `/sys/kernel/debug': Function not implemented" with 3.2.0-85.122 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1465322/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs