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[Ｖ字龍(Vdragon) <Vdragon.Taiwan@xxxxxxxxx>]

** Also affects: kbd (Ubuntu)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1443853

Title:
  Ubuntu 14.10 ISO live boot in Oracle VirtualBox ends up with a
  corrupted display

Status in Virtualbox:
  New
Status in console-setup package in Ubuntu:
  New
Status in kbd package in Ubuntu:
  New
Status in virtualbox package in Ubuntu:
  New

Bug description:
  (Content copied from "Ubuntu 14.10 ISO live boot ends up with a
  corrupted display" #13615 VirtualBox bug ticket, by piotrjurkiewicz)

  Booting up live session of Ubuntu MATE 14.10 and Ubuntu Gnome 14.10 from ISO ends up with a corrupted screen. See the screenshot:
  https://launchpadlibrarian.net/186864347/ubu.png

  Switching back and forth to the tty7 (ctrl+alt+F1 and then alt+F7)
  fixes the display.

  I think that this might be a problem with resolution setting:

  ```
  00:00:31.226379 Display::handleDisplayResize(): uScreenId = 0, pvVRAM=0000000000000000 w=1152 h=400 bpp=0 cbLine=0x0, flags=0x1
  00:00:31.226399 UIFrameBuffer::RequestResize: Screen=0, Format=0, BitsPerPixel=0, BytesPerLine=0, Size=1152x400, Sending to async-handler..
  00:00:31.226457 UIFrameBufferQImage::resizeEvent: Format=0, BitsPerPixel=0, BytesPerLine=0, Size=1152x400
  00:00:31.226467 UIFrameBufferQImage::resizeEvent: Resizing to FALLBACK buffer due to format is invalid..
  ```

  After switching back and forth to the tty7 (what fixes the display)
  the log says:

  ```
  00:00:31.226379 Display::handleDisplayResize(): uScreenId = 0, pvVRAM=0000000000000000 w=1152 h=400 bpp=0 cbLine=0x0, flags=0x1
  00:00:31.226399 UIFrameBuffer::RequestResize: Screen=0, Format=0, BitsPerPixel=0, BytesPerLine=0, Size=1152x400, Sending to async-handler..
  00:00:31.226457 UIFrameBufferQImage::resizeEvent: Format=0, BitsPerPixel=0, BytesPerLine=0, Size=1152x400
  00:00:31.226467 UIFrameBufferQImage::resizeEvent: Resizing to FALLBACK buffer due to format is invalid..
  00:01:37.584616 Display::handleDisplayResize(): uScreenId = 0, pvVRAM=0000000000000000 w=720 h=400 bpp=0 cbLine=0x0, flags=0x1
  00:01:37.584634 UIFrameBuffer::RequestResize: Screen=0, Format=0, BitsPerPixel=0, BytesPerLine=0, Size=720x400, Sending to async-handler..
  00:01:37.584680 UIFrameBufferQImage::resizeEvent: Format=0, BitsPerPixel=0, BytesPerLine=0, Size=720x400
  00:01:37.584692 UIFrameBufferQImage::resizeEvent: Resizing to FALLBACK buffer due to format is invalid..
  00:01:39.055475 Display::handleDisplayResize(): uScreenId = 0, pvVRAM=000000000a7f0000 w=1024 h=768 bpp=32 cbLine=0x1000, flags=0x1
  00:01:39.055495 UIFrameBuffer::RequestResize: Screen=0, Format=843204434, BitsPerPixel=32, BytesPerLine=4096, Size=1024x768, Sending to async-handler..
  00:01:39.055559 UIFrameBufferQImage::resizeEvent: Format=843204434, BitsPerPixel=32, BytesPerLine=4096, Size=1024x768
  00:01:39.055568 UIFrameBufferQImage::resizeEvent: Resizing to directly use VGA device content..
  ```

  I have tested 4.3.18 and also the testbuild 4.3.19 r96825, it happens
  on both of them.

  You can download the ISO images of these two systems here:

   https://ubuntu-mate.r.worldssl.net/download/ubuntu-mate-14.10
  -desktop-amd64.iso

   http://cdimage.ubuntu.com/ubuntu-gnome/releases/14.10/release/ubuntu-
  gnome-14.10-desktop-amd64.iso

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