Public bug reported:
Update to Ubuntu 20.04.1
This bug was found when re-installing ubuntu due to a failed update to
20.04.1
The Display drivers didn't work for Nvidia GE graphic card for Samsung
3440x1440 resolution
carl@LenovoDesk-H530s:~$ lspci | grep -i nvid
01:00.0 VGA compatible controller: NVIDIA Corporation GK208 [GeForce GT 720]
(rev a1)
01:00.1 Audio device: NVIDIA Corporation GK208 HDMI/DP Audio Controller (rev a1)
Tried various settings with cvt and xrandr but unable to get 3440x1440
resolution
Re-installed with 20.1 and problem persists with display persist and
also has this bug on new install.
carl@LenovoDesk-H530s:~$ lsb_release -rd
Description: Ubuntu Groovy Gorilla (development branch)
Release: 20.10
carl@LenovoDesk-H530s:~$ sudo apt-cache policy grub-efi-amd64-signed
grub-efi-amd64-signed:
Installed: 1.155+2.04-1ubuntu35
Candidate: 1.155+2.04-1ubuntu35
Version table:
*** 1.155+2.04-1ubuntu35 500
500 http://gb.archive.ubuntu.com/ubuntu groovy/main amd64 Packages
100 /var/lib/dpkg/status
ProblemType: Package
DistroRelease: Ubuntu 20.10
Package: grub-efi-amd64-signed 1.155+2.04-1ubuntu35
ProcVersionSignature: Ubuntu 5.8.0-20.21-generic 5.8.10
Uname: Linux 5.8.0-20-generic x86_64
ApportVersion: 2.20.11-0ubuntu48
Architecture: amd64
CasperMD5CheckResult: skip
Date: Wed Oct 7 18:43:21 2020
ErrorMessage: installed grub-efi-amd64-signed package post-installation script
subprocess returned error exit status 1
InstallationDate: Installed on 2020-10-07 (0 days ago)
InstallationMedia: Ubuntu 20.10 "Groovy Gorilla" - Beta amd64 (20200930)
Python3Details: /usr/bin/python3.8, Python 3.8.6, python3-minimal,
3.8.2-0ubuntu2
PythonDetails: N/A
RelatedPackageVersions:
dpkg 1.20.5ubuntu2
apt 2.1.10
SourcePackage: grub2-signed
Title: package grub-efi-amd64-signed 1.155+2.04-1ubuntu35 failed to
install/upgrade: installed grub-efi-amd64-signed package post-installation
script subprocess returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: grub2-signed (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-package groovy
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https://bugs.launchpad.net/bugs/1898919
Title:
package grub-efi-amd64-signed 1.155+2.04-1ubuntu35 failed to
install/upgrade: installed grub-efi-amd64-signed package post-
installation script subprocess returned error exit status 1
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