[Bug 1201257] Re: Secure Boot doesn't work with ASUS S56CB

[Nayef A]

My laptop is ASUS S550C with Windows 8 pre-installed.
- Prepared partitions using Windows' own disk management utility. deleting D and shrinking C.
- I prepared a Ubuntu 13.04 (64 bit) ISO to boot with a USB.
-  I Disabled Fast Boot. and  disabled FastStartup.
- I used multiple media USB and DVD trying 13.4 and 12.10 
every time when I reach the try Ubuntu install menu every choice leads to black screen.
just like the other bug reporter
"when I try to boot Ubuntu installation via USB/DVD in SecureBoot, computer doesn't give any error output, it is able to show me the UEFI boot menu (Install Ubuntu, Try Ubuntu, Check Disk for Errors, etc.) but when I select any of them, it just waits in black screen without any error message."
I only figured out it was a secure boot issue when I followed some advice to try Grub commands. 
At that point I got a secure boot doesn't allow loading module error.
so I disabled SecureBoot. 
Ubuntu installs fine. Restarts fine. 
Grub window item leads to error  message about device map not found and efi path incorrect  
if I turn on SecureBoot. Windows loads immediately and Ubuntu is ignored.
So I checked and confirmed efi grub was installed.
I followed your advice and did
> sudo apt-get install grub-efi-amd64-signed shim-signed
> sudo grub-install --uefi-secure-boot
Now if I disable SecureBoot Ubuntu works and I still get the windows error form grub
If I enable SecureBoot I actually get a grub selection menu. Which is progress I suppose.
But now if I choose any Ubuntu item I get a purple screen vs. a black one I was getting from the installation media.
And Windows 8 still won't run from Grub same device map efi path error? help.

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https://bugs.launchpad.net/bugs/1201257

Title:
  Secure Boot doesn't work with ASUS S56CB

Status in “shim” package in Ubuntu:
  Incomplete

Bug description:
  Here are the information and the exact steps I followed:

  - My laptop is ASUS S56CB with Windows 8 pre-installed.
  - Prepared partitions using Windows' own disk management utility.
  - I prepared a Ubuntu 13.04 (64 bit) ISO to boot with a USB.
  - Disabled Fast Boot. When I tried to install Ubuntu in UEFI mode, Secure Boot didn't allow, then I also disabled Secure Boot.
  - Everything went fine and installation started. I continued in the normal way till the partition point.
  - I created an EFI partition, "swap", "root" and "home" partitions and set the bootloader to be installed on the EFI partition. I don't want to use Ubuntu's GRUB loader, so I didn't install GRUB on dev/sda, but on dev/sda5 as the Ubuntu EFI partition was there.
  - Installation finished, and I opened Windows 8. Using EasyBCD, I created a new boot entry and rebooted to see if it would load Ubuntu.
  - When I choose Ubuntu entry, I get this error:

  File :\NST\AutoNeoGrub0.mbr
  Status: 0xc000007b

  If I try starting Ubuntu from UEFI (by pressing Esc while the computer
  boots), I'm able to boot into Ubuntu. However, as I stated it doesn't
  work in Windows 8's boot menu.

  The problem related to Windows 8's boot menu not starting is another
  issue, but the real problem is that Ubuntu cannot be installed in this
  computer without disabling Secure Boot.

  Regards,
  Şâkir Aşçı

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: shim (not installed)
  ProcVersionSignature: Ubuntu 3.8.0-19.29-generic 3.8.8
  Uname: Linux 3.8.0-19-generic x86_64
  ApportVersion: 2.9.2-0ubuntu8
  Architecture: amd64
  Date: Mon Jul 15 06:37:37 2013
  InstallationDate: Installed on 2013-07-15 (0 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
  MarkForUpload: True
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=tr_TR.UTF-8
   SHELL=/bin/bash
  SourcePackage: shim
  UpgradeStatus: No upgrade log present (probably fresh install)

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