My output when failing: Removing libcuda1-331 (331.113-0ubuntu0.1) ... Removing nvidia-331-uvm (331.113-0ubuntu0.1) ... Removing all DKMS Modules Done. Removing nvidia-331 (331.113-0ubuntu0.1) ... Removing all DKMS Modules Done. update-alternatives: using /usr/lib/nvidia-331-prime/ld.so.conf to provide /etc/ld.so.conf.d/x86_64-linux-gnu_GL.conf (x86_64-linux-gnu_gl_conf) in auto mode update-alternatives: using /usr/lib/nvidia-331-prime/alt_ld.so.conf to provide /etc/ld.so.conf.d/i386-linux-gnu_GL.conf (i386-linux-gnu_gl_conf) in auto mode update-alternatives: using /usr/lib/x86_64-linux-gnu/mesa/ld.so.conf to provide /etc/ld.so.conf.d/x86_64-linux-gnu_GL.conf (x86_64-linux-gnu_gl_conf) in auto mode update-alternatives: using /usr/lib/i386-linux-gnu/mesa/ld.so.conf to provide /etc/ld.so.conf.d/i386-linux-gnu_GL.conf (i386-linux-gnu_gl_conf) in auto mode INFO:Disable nvidia-331 DEBUG:Parsing /usr/share/ubuntu-drivers-common/quirks/put_your_quirks_here DEBUG:Parsing /usr/share/ubuntu-drivers-common/quirks/dell_latitude DEBUG:Parsing /usr/share/ubuntu-drivers-common/quirks/lenovo_thinkpad stop: Unknown job: nvidia-persistenced userdel: user nvidia-persistenced is currently used by process 4117 dpkg: error processing package nvidia-331 (--remove): subprocess installed post-removal script returned error exit status 8 Removing nvidia-opencl-icd-331 (331.113-0ubuntu0.1) ... Processing triggers for libc-bin (2.19-10ubuntu2.2) ... Processing triggers for man-db (2.7.0.2-2) ... Errors were encountered while processing: nvidia-331 E: Sub-process /usr/bin/dpkg returned an error code (1) It seems the error occurs while doing some changes on the user "nvidia-persistenced", that is used by the process 4117 (nvidia-persiste) I got the name of the process with: # sudo ps -e | grep nvidia => 4117 ? 00:00:00 nvidia-persiste And killed it: # sudo kill 4117 Then could install with no issues and the output shows the operation on the user "nvidia-persistenced" is now successful: Removing nvidia-331 (331.113-0ubuntu0.1) ... stop: Unknown job: nvidia-persistenced update-initramfs: deferring update (trigger activated) Processing triggers for initramfs-tools (0.103ubuntu8) ... update-initramfs: Generating /boot/initrd.img-3.16.0-30-generic Processing triggers for libc-bin (2.19-10ubuntu2.2) ... Selecting previously unselected package libcuda1-331-updates. (Reading database ... 358904 files and directories currently installed.) Preparing to unpack .../libcuda1-331-updates_331.113-0ubuntu0.1_amd64.deb ... Unpacking libcuda1-331-updates (331.113-0ubuntu0.1) ... Selecting previously unselected package nvidia-331-updates. Preparing to unpack .../nvidia-331-updates_331.113-0ubuntu0.1_amd64.deb ... Unpacking nvidia-331-updates (331.113-0ubuntu0.1) ... Selecting previously unselected package nvidia-331-updates-uvm. Preparing to unpack .../nvidia-331-updates-uvm_331.113-0ubuntu0.1_amd64.deb ... Unpacking nvidia-331-updates-uvm (331.113-0ubuntu0.1) ... Selecting previously unselected package nvidia-opencl-icd-331-updates. Preparing to unpack .../nvidia-opencl-icd-331-updates_331.113-0ubuntu0.1_amd64.deb ... Unpacking nvidia-opencl-icd-331-updates (331.113-0ubuntu0.1) ... Processing triggers for man-db (2.7.0.2-2) ... Processing triggers for ureadahead (0.100.0-16) ... Setting up libcuda1-331-updates (331.113-0ubuntu0.1) ... Setting up nvidia-331-updates (331.113-0ubuntu0.1) ... update-alternatives: using /usr/lib/nvidia-331-updates/ld.so.conf to provide /etc/ld.so.conf.d/x86_64-linux-gnu_GL.conf (x86_64-linux-gnu_gl_conf) in auto mode update-alternatives: using /usr/lib/nvidia-331-updates/alt_ld.so.conf to provide /etc/ld.so.conf.d/i386-linux-gnu_GL.conf (i386-linux-gnu_gl_conf) in auto mode update-alternatives: using /usr/share/nvidia-331-updates/glamor.conf to provide /usr/share/X11/xorg.conf.d/glamoregl.conf (glamor_conf) in auto mode update-initramfs: deferring update (trigger activated) INFO:Enable nvidia-331-updates DEBUG:Parsing /usr/share/ubuntu-drivers-common/quirks/put_your_quirks_here DEBUG:Parsing /usr/share/ubuntu-drivers-common/quirks/dell_latitude DEBUG:Parsing /usr/share/ubuntu-drivers-common/quirks/lenovo_thinkpad Adding system user `nvidia-persistenced' (UID 128) ... Adding new group `nvidia-persistenced' (GID 138) ... Adding new user `nvidia-persistenced' (UID 128) with group `nvidia-persistenced' ... Not creating home directory `/'. Loading new nvidia-331-updates-331.113 DKMS files... First Installation: checking all kernels... Building only for 3.16.0-30-generic Building for architecture x86_64 Building initial module for 3.16.0-30-generic Done. nvidia_331_updates: Running module version sanity check. - Original module - No original module exists within this kernel - Installation - Installing to /lib/modules/3.16.0-30-generic/updates/dkms/ depmod.... DKMS: install completed. Setting up nvidia-331-updates-uvm (331.113-0ubuntu0.1) ... Loading new nvidia-331-updates-uvm-331.113 DKMS files... First Installation: checking all kernels... Building only for 3.16.0-30-generic Building for architecture x86_64 Building initial module for 3.16.0-30-generic Done. nvidia-331-updates-uvm: Running module version sanity check. - Original module - No original module exists within this kernel - Installation - Installing to /lib/modules/3.16.0-30-generic/updates/dkms/ depmod.... DKMS: install completed. Setting up nvidia-opencl-icd-331-updates (331.113-0ubuntu0.1) ... Processing triggers for libc-bin (2.19-10ubuntu2.2) ... Processing triggers for initramfs-tools (0.103ubuntu8) ... update-initramfs: Generating /boot/initrd.img-3.16.0-30-generic