I tracked the problem to /var/lib/dpkg/info/nvidia-prime.postrm: 75 (just as the log says)
I have found a fix ( well, almost a fix ). I used "sudo leafpad" to open the "/var/lib/dpkg/info/nvidia-prime.postrm" file. I deleted everything between " # Restore the alternatives to a non prime # configuration, if possible os_release="$(lsb_release -c | cut -d: -f2 | sed "s/\t//g")" " and "update-alternatives --auto "$other_arch" || true fi fi " I was now able to remove it using autoremove and reinstall. I don't know if this method is safe. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1264611 Title: package nvidia-prime not installed failed to install/upgrade: subprocess installed post-removal script returned error exit status 127 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-prime/+bug/1264611/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs