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

[Doug McMahon]

I should note that as of recently using "nomodeset"  will allow the installer window to show up & installs can be done. Occasionally with nomodeset nothing happens, either a plymouth splash appears & never ends or just a black screen.
Other users with various nvidia hardware report the same.

Also sometimes, (rare),  just going to the options screen  is enough & nomodeset doesn't have to used 
The recently 'released'  Ubuntu GNOME Remix 12.10 iso's show the same behaviors.
The current fedora 18 nightly is fine, no corruption.

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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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