Public bug reported:
Upon startup after a routine software update, my desktop was limited to
640×480 resolution, making the desktop UI unusable. Switching graphics
drivers didn't help.
Downgrading the kernel from linux-image-5.11.0-7612-generic to linux-
image-5.8.0-7642-generic via Grub after restart solved the problem, at
least temporarily.
After the "fix" (reversion to old kernel):
$ uname -a
Linux flying-gazelle 5.8.0-7642-generic #47~1614007149~20.10~82fb226~dev-Ubuntu
SMP Wed Feb 24 15:29:29 x86_64 x86_64 x86_64 GNU/Linux
$ lsb_release -rd
Description: Ubuntu 20.10
Release: 20.10
$ apt-cache policy nvidia-dkms-390
nvidia-dkms-390:
Installed: 390.141-0ubuntu0.20.10.1
Candidate: 390.141-0ubuntu0.20.10.1
Version table:
*** 390.141-0ubuntu0.20.10.1 500
500 http://us.archive.ubuntu.com/ubuntu groovy-updates/restricted amd64
Packages
500 http://security.ubuntu.com/ubuntu groovy-security/restricted amd64
Packages
100 /var/lib/dpkg/status
390.138-0ubuntu2 500
500 http://us.archive.ubuntu.com/ubuntu groovy/restricted amd64 Packages
ProblemType: Package
DistroRelease: Ubuntu 20.10
Package: nvidia-dkms-390 390.141-0ubuntu0.20.10.1
ProcVersionSignature: Ubuntu
5.11.0-7612.13~1617215757~20.10~97a8d1a~dev-generic 5.11.7
Uname: Linux 5.11.0-7612-generic x86_64
ApportVersion: 2.20.11-0ubuntu50.5
Architecture: amd64
CasperMD5CheckResult: skip
Date: Sun Apr 4 08:52:31 2021
ErrorMessage: installed nvidia-dkms-390 package post-installation script
subprocess returned error exit status 10
InstallationDate: Installed on 2016-09-24 (1652 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
Python3Details: /usr/bin/python3.8, Python 3.8.6, python3-minimal,
3.8.6-0ubuntu1
PythonDetails: N/A
RelatedPackageVersions:
dpkg 1.20.5ubuntu2
apt 2.1.10ubuntu0.2
SourcePackage: nvidia-graphics-drivers-390
Title: package nvidia-dkms-390 390.141-0ubuntu0.20.10.1 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)
** Affects: nvidia-graphics-drivers-390 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-package groovy third-party-packages
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https://bugs.launchpad.net/bugs/1922523
Title:
package nvidia-dkms-390 390.141-0ubuntu0.20.10.1 failed to
install/upgrade: installed nvidia-dkms-390 package post-installation
script subprocess returned error exit status 10
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