[Bug 531573] Re: No console nor monitor detection with efi boot on MacBook 5, 1

Marcus Tomlinson marcus.tomlinson at canonical.com
Thu Mar 5 12:39:07 UTC 2020


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** Changed in: grub2 (Ubuntu)
       Status: New => Incomplete

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Title:
  No console nor monitor detection with efi boot on MacBook 5,1

Status in grub2 package in Ubuntu:
  Incomplete

Bug description:
  Binary package hint: grub2

  I am trying to boot my Macbook Pro Unibody (5,1) in EFI mode rather
  than BIOS (with rEFIt).

  I have followed the main guidelines at
  http://grub.enbug.org/TestingOnMacbook, and I can launch grub2 efi
  application within rEFIt menĂ¹.

  I started using a simple grub.cfg:
  menuentry "GNU/Linux, Linux 2.6.31-20-generic" {
  	set root=(hd0,4)
  	linux	/boot/vmlinuz-2.6.31-20-generic root=/dev/sda4
  	initrd	/boot/initrd.img-2.6.31-20-generic
  }

  Grub2 will execute kernel and initrd, the system will bootup (I can
  ssh on it), but I cannot see ANYTHING on the console (totally black).

  I tried with optional parameter like video=(efifb|vesafb) and adding
  other parameters like acpi=force, noefi, fakebios.

  Even Xorg seems able to detect with nvidia proprietary driver the 2
  graphic cards, but he can't detect any monitor attached to them.

  I am attaching both dmesg and Xorg.0.log

  ProblemType: Bug
  Architecture: amd64
  Date: Wed Mar  3 20:42:22 2010
  DistroRelease: Ubuntu 9.10
  InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
  NonfreeKernelModules: wl nvidia
  Package: grub-efi-amd64 1.97~beta4-1ubuntu5
  ProcEnviron:
   LANG=it_IT.UTF-8
   SHELL=/bin/bash
  ProcVersionSignature: Ubuntu 2.6.31-20.57-generic
  SourcePackage: grub2
  Uname: Linux 2.6.31-20-generic x86_64

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