When I ran "update-grub" after editing the grub.conf file to have GRUB_CMDLINE_LINUX="nomodeset" written in it, the screen turned to black and displayed the running taks with the green "OK" letters next to them

[Seija K.]

When I ran "sudo update-grub" after changing the line in grub.conf to be "GRUB_CMDLINE_LINUX="nomodeset", the screen turned to black and the windows would not appear. I was forced to open a tty session and reboot.

Expected Results:
The command runs but the screen does not turn black until I initiate a shutdown/reboot

Actual Results:
The screen turns black and the startup tasks and status appear over a black background, as it would when I push the up key when ubuntu starts up.

This issue occurred at around 3:47 PM, EDT, on November 29, 2019.

Description: Ubuntu 18.04.3 LTS
Release: 18.04

plymouth:
  Installed: 0.9.3-1ubuntu7.18.04.2
  Candidate: 0.9.3-1ubuntu7.18.04.2
  Version table:
 *** 0.9.3-1ubuntu7.18.04.2 500
        500 http://us.archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     0.9.3-1ubuntu7 500
        500 http://us.archive.ubuntu.com/ubuntu bionic/main amd64 Packages

mutter:
  Installed: 3.28.4-0ubuntu18.04.2
  Candidate: 3.28.4-0ubuntu18.04.2
  Version table:
 *** 3.28.4-0ubuntu18.04.2 500
        500 http://us.archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     3.28.1-1ubuntu1 500
        500 http://us.archive.ubuntu.com/ubuntu bionic/main amd64 Packages

xorg:
  Installed: 1:7.7+19ubuntu7.1
  Candidate: 1:7.7+19ubuntu7.1
  Version table:
 *** 1:7.7+19ubuntu7.1 500
        500 http://us.archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     1:7.7+19ubuntu7 500
        500 http://us.archive.ubuntu.com/ubuntu bionic/main amd64 Packages

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: plymouth 0.9.3-1ubuntu7.18.04.2
ProcVersionSignature: Ubuntu 5.0.0-37.40~18.04.1-generic 5.0.21
Uname: Linux 5.0.0-37-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.9
Architecture: amd64
BootLog: Error: [Errno 2] No such file or directory: '/var/log/boot.log'
CurrentDesktop: ubuntu:GNOME
Date: Fri Dec 6 14:55:00 2019
DefaultPlymouth: /usr/share/plymouth/themes/ubuntu-logo/ubuntu-logo.plymouth
MachineType: Gateway DX4860
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.0.0-37-generic root=UUID=3c16de60-443d-4ba1-baee-e0f3153202c0 ro quiet splash vt.handoff=1
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.0.0-37-generic root=UUID=3c16de60-443d-4ba1-baee-e0f3153202c0 ro quiet splash vt.handoff=1
SourcePackage: plymouth
TextPlymouth: /usr/share/plymouth/themes/ubuntu-text/ubuntu-text.plymouth
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/01/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P02-A1
dmi.board.name: IPISB-VR
dmi.board.vendor: Gateway
dmi.board.version: 1.01
dmi.chassis.type: 3
dmi.chassis.vendor: Gateway
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP02-A1:bd08/01/2011:svnGateway:pnDX4860:pvr:rvnGateway:rnIPISB-VR:rvr1.01:cvnGateway:ct3:cvr:
dmi.product.family: Gateway Desktop
dmi.product.name: DX4860
dmi.sys.vendor: Gateway