[Bug 1043518] Re: live cd is unusable due to video degradation

[Doug McMahon]

I've gone ahead & tried the nomodeset  option multiple times. (7)

Twice it worked fine to produce a workable live session/installer
Twice only got a black screen, once with splash screen, red lights, never proceeded
Once got usable live session though also removed splash quiet from boot option 
Once got the live session but unity wasn't loaded
Once got live session with constant windows flashing

This machine has never before had issue like this - started after the
removal of unity-2d  & the inclusion of the ...904/5 xserver on live iso

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https://bugs.launchpad.net/bugs/1043518

Title:
  live cd is unusable due to video degradation

Status in “ubiquity” package in Ubuntu:
  Confirmed

Bug description:
  All images after 08/15 have become unusable, either to install from or to use a live session.
  Images from 08/17 & earlier work fine as does the install itself.

  Attached are 2 possible screens which seem to vary depending on which
  partition grub is configured on in a multi-boot system (12.04 & 12.10

  ProblemType: Bug
  DistroRelease: Ubuntu 12.10
  Package: ubiquity (not installed)
  ProcVersionSignature: Ubuntu 3.5.0-9.9-generic 3.5.0
  Uname: Linux 3.5.0-9-generic x86_64
  ApportVersion: 2.5.1-0ubuntu3
  Architecture: amd64
  Date: Wed Aug 29 16:21:08 2012
  InstallCmdLine: noprompt cdrom-detect/try-usb=true file=/cdrom/preseed/ubuntu.seed boot=casper initrd=/casper/initrd.lz quiet splash --
  InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120813.1)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubiquity
  UpgradeStatus: No upgrade log present (probably fresh install)

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