[Bug 1901043] Re: No sound in ubiquity-dm with nomodeset

[William Wilson]

[Impact]

 * When booting to "Safe Graphics" mode the system startup sound would
   sometimes not be played

 * This is an accessibility issue as the system startup sound is meant to
   indicate that Ubiquity is ready 

[Test Case]

 * Boot an installer image to Safe Graphics mode and listen for the
sound

 * You can optionally use `systemctl status sound.target` to monitor when the
   sound should be played. This should occur shortly after sound.target becomes
   active

[Where problems could occur]

 * If sound.target never comes up, the system ready sound will not be played.
   This could be caused by a missing or broken sound card

[Other Info]

 * It is expected behavior that the sound target may take longer to become active
   when nomodeset is on the kernel command line. This is because nomodeset prevents
   the kernel from pre-loading audio drivers.

 * This problem seems to be more prevalent with Intel sound cards

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https://bugs.launchpad.net/bugs/1901043

Title:
  No sound in ubiquity-dm with nomodeset

Status in Release Notes for Ubuntu:
  Fix Released
Status in ubiquity package in Ubuntu:
  Triaged
Status in ubiquity source package in Focal:
  New

Bug description:
  Ubuntu Groovy Desktop

  There is no sound in ubiquity-dm with nomodeset (safe graphics mode)

  ProblemType: Bug
  DistroRelease: Ubuntu 20.10
  Package: ubiquity 20.10.13
  ProcVersionSignature: Ubuntu 5.8.0-25.26-generic 5.8.14
  Uname: Linux 5.8.0-25-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.11-0ubuntu50
  Architecture: amd64
  CasperMD5CheckResult: pass
  CasperVersion: 1.455
  CurrentDesktop: ubuntu:GNOME
  Date: Thu Oct 22 15:20:00 2020
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed maybe-ubiquity quiet splash ---
  LiveMediaBuild: Ubuntu 20.10 "Groovy Gorilla" - Release amd64 (20201022)
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubiquity
  UpgradeStatus: No upgrade log present (probably fresh install)

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