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[q4a <1471039@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

I have installed ubuntu core 14.04, upgraded to 15.04 on Toshiba AC100-117, but when i install vivid kernel. I just can see white screen after reboot.
I'm using sos-uboot-r5-2013-11-10.bin, installed with this guide: http://paz00.ru/index.php/Uboot_installation

Boot fine: https://launchpad.net/ubuntu/utopic/armhf/linux-image-3.16.0-43-generic/3.16.0-43.58
Don't boot: https://launchpad.net/ubuntu/vivid/armhf/linux-image-3.19.0-21-generic/3.19.0-21.21
Related team: https://launchpad.net/~ac100

Also I have same problem after installing 15.04 with netboot:

Works fine: http://ports.ubuntu.com/ubuntu-ports/dists/utopic/main/installer-armhf/20101020ubuntu352/images/generic/netboot/tegra/
White screen after installation: http://ports.ubuntu.com/ubuntu-ports/dists/vivid/main/installer-armhf/20101020ubuntu376/images/generic/netboot/tegra/

I know that bug is hard to reproduce without netbook, but I can provide any logs that may be required.
Please, tell me what you need to determine the problem?

** Affects: linux-meta (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: ac100 armhf vivid

** Tags added: ac100 armhf vivid

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https://bugs.launchpad.net/bugs/1471039

Title:
  Toshiba AC100 can't boot with vivid kernel

Status in linux-meta package in Ubuntu:
  New

Bug description:
  I have installed ubuntu core 14.04, upgraded to 15.04 on Toshiba AC100-117, but when i install vivid kernel. I just can see white screen after reboot.
  I'm using sos-uboot-r5-2013-11-10.bin, installed with this guide: http://paz00.ru/index.php/Uboot_installation

  Boot fine: https://launchpad.net/ubuntu/utopic/armhf/linux-image-3.16.0-43-generic/3.16.0-43.58
  Don't boot: https://launchpad.net/ubuntu/vivid/armhf/linux-image-3.19.0-21-generic/3.19.0-21.21
  Related team: https://launchpad.net/~ac100

  Also I have same problem after installing 15.04 with netboot:

  Works fine: http://ports.ubuntu.com/ubuntu-ports/dists/utopic/main/installer-armhf/20101020ubuntu352/images/generic/netboot/tegra/
  White screen after installation: http://ports.ubuntu.com/ubuntu-ports/dists/vivid/main/installer-armhf/20101020ubuntu376/images/generic/netboot/tegra/

  I know that bug is hard to reproduce without netbook, but I can provide any logs that may be required.
  Please, tell me what you need to determine the problem?

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