No graphical boot with nvidia driver and bbswitch and kernel 4.4.0-116

I am not able to boot my computer (Dell Latitude E7450) with the nvidia proprietary drivers. bbswitch complains about there being no suitable _dsm call. I do not know what this is, but this happens in spite of loading the bbswitch module with the skip_optimus_dsm option.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: bbswitch-dkms 0.8-3ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-116.140-generic 4.4.98
Uname: Linux 4.4.0-116-generic x86_64
NonfreeKernelModules: nvidia_uvm wl nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.15
Architecture: amd64
Date: Tue Mar 6 19:11:24 2018
InstallationDate: Installed on 2016-07-18 (596 days ago)
InstallationMedia: Xubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
ProcEnviron:
 TERM=linux
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
SourcePackage: bbswitch
UpgradeStatus: No upgrade log present (probably fresh install)