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[Martin Wimpress <1432899@xxxxxxxxxxxxxxxxxx>]

This is also affecting Ubuntu MATE 15.04 daily images for 17th March
2015. When booting the i386 or and64 images under VirtualBox is it not
possible to reach Ubiquity or the Live desktop.

The full Xorg.0.log is attached and also available in the paste below:

  * http://paste.ubuntu.com/10615071/

** Attachment added: "Xorg.0.log"
   https://bugs.launchpad.net/xserver-xorg-driver-vesa/+bug/1432899/+attachment/4347799/+files/Xorg.0.log

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https://bugs.launchpad.net/bugs/1432899

Title:
  VESA error: Cannot read int vect

Status in Xorg Xserver VESA:
  New
Status in xorg package in Ubuntu:
  Confirmed
Status in xorg-server package in Ubuntu:
  Confirmed
Status in xserver-xorg-driver-vesa package in Ubuntu:
  Confirmed

Bug description:
  After installing the most recent updates on Vivid Vervet within a KVM
  virtual machine, the X server fails to start up with error message
  "VESA(0): Cannot read int vect". During the recent update, several
  xserver-xorg-* packages were upgraded; the X server (xserver-xorg-
  core) was updated from 1.16.2.901-1ubuntu4 to 1.17.1-0ubuntu2.

  After some searching, I found, this upstream patch may have introduced the issue:
  http://cgit.freedesktop.org/xorg/xserver/commit/hw/xfree86/int10?id=21b216ad6ce2e9c89359b95e4196e42d91bf9420

  Excerpt from X.org log:

  [  3612.095] (II) LoadModule: "vbe"
  [  3612.095] (II) Loading /usr/lib/xorg/modules/libvbe.so
  [  3612.095] (II) Module vbe: vendor="X.Org Foundation"
  [  3612.095] 	compiled for 1.17.1, module version = 1.1.0
  [  3612.095] 	ABI class: X.Org Video Driver, version 19.0
  [  3612.095] (II) Loading sub module "int10"
  [  3612.095] (II) LoadModule: "int10"
  [  3612.095] (II) Loading /usr/lib/xorg/modules/libint10.so
  [  3612.096] (II) Module int10: vendor="X.Org Foundation"
  [  3612.096] 	compiled for 1.17.1, module version = 1.0.0
  [  3612.096] 	ABI class: X.Org Video Driver, version 19.0
  [  3612.096] (II) VESA(0): initializing int10
  [  3612.096] (EE) VESA(0): Cannot read int vect
  [  3612.096] (II) UnloadModule: "vesa"
  [  3612.096] (II) UnloadSubModule: "int10"
  [  3612.096] (II) Unloading int10
  [  3612.096] (II) UnloadSubModule: "vbe"
  [  3612.096] (II) Unloading vbe
  [  3612.096] (EE) Screen(s) found, but none have a usable configuration.
  [  3612.096] (EE) 
  Fatal server error:
  [  3612.096] (EE) no screens found(EE) 

  The full X.org log has been attached.

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