package nvidia-dkms-390 390.138-0ubuntu0.20.04.1 failed to install/upgrade: installed nvidia-dkms-390 package post-installation script subprocess returned error exit status 10

[Christos Smailis]

gfx card NVIDIA RTX 2070 8 GB VRAM

ProblemType: Package
DistroRelease: Ubuntu 20.04
Package: nvidia-dkms-390 390.138-0ubuntu0.20.04.1
ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
Uname: Linux 5.4.0-42-generic x86_64
NonfreeKernelModules: lkp_Ubuntu_5_4_0_42_46_generic_70
ApportVersion: 2.20.11-0ubuntu27.4
Architecture: amd64
CasperMD5CheckResult: skip
Date: Sat Sep 12 14:44:52 2020
ErrorMessage: installed nvidia-dkms-390 package post-installation script subprocess returned error exit status 10
InstallationDate: Installed on 2020-09-12 (0 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
Python3Details: /usr/bin/python3.8, Python 3.8.2, python3-minimal, 3.8.2-0ubuntu2
PythonDetails: N/A
RelatedPackageVersions:
 dpkg 1.19.7ubuntu3
 apt 2.0.2ubuntu0.1
SourcePackage: nvidia-graphics-drivers-390
Title: package nvidia-dkms-390 390.138-0ubuntu0.20.04.1 failed to install/upgrade: installed nvidia-dkms-390 package post-installation script subprocess returned error exit status 10
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.