kernel-packages team mailing list archive

[Seth Forshee <seth.forshee+lp@xxxxxxxxxxxxx>]

So that's definitely a legacy bios installation, which really isn't
recommended anymore for most systems because EFI boot usually works fine
and exposes more functionality.

I'd at least like to confirm that booting in native EFI works without
nr_cpus=1. You should be able to just run 'sudo apt-get install grub-
efi', then when you reboot rEFInd will have an option that's labeled
something like "Boot EFI\ubuntu\grub64.efi". Use that one, remove
nr_cpus=1, and let us know what happens. Note that this will remove
grub-pc, but it doesn't actually erase grub so you should still be able
to boot back to the legacy mode if something goes wrong.

I'm also curious whether you're intentionally doing the legacy bios
install. If not, how exactly are you flashing the iso and starting the
installer? The only way I can get that is to select the "Boot Legacy OS
from HD" option to start the installer.

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https://bugs.launchpad.net/bugs/1284085

Title:
  unable to boot after install on 2013 macbook air

Status in Release Notes for Ubuntu:
  New
Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  Booting and installing from a live usb for trusty does work. However,
  on restart the machine will not boot. It hangs at:

  https://www.dropbox.com/s/behviox991o01o1/2014-02-23%2016.15.15.jpg

  Per apw in #ubuntu-kernel a test to add nr_cpus=1 does work to boot
  the machine.

  Note that wifi does not work at this point, but it does work in the
  live usb boot.

  For more information I did hit this with both the 3.13.0-8 and
  3.13.0-11 kernels as I tried to update.

  --- Original notes ---

  I'm attempting to install and run 14.04 trusty on a macbook air in a
  dual boot configuration. I have a Mac 64bit iso bootable usb device
  that I used to install on top of refind. The very first time I
  installed and setup it worked. I was in Ubuntu. I installed updates
  and some basic packages and when I rebooted it would no longer boot.

  I had gotten an updated kernel so I attempted to boot to the older -08
  kernel with no luck.

  I then attempted to reinstall. I figured I could avoid updates for the
  moment. I used the USB stick to do an install using the "Remove 14.04
  and install" option. When it was done, it would not boot just as
  before.

  I attempted to use the usb stick to rebuild grub using
  http://howtoubuntu.org/how-to-repair-restore-reinstall-grub-2-with-a
  -ubuntu-live-cd with no luck.

  I've tried setting boot params in grub of nomodeset noapic. When I
  turn off the quiet mode I get the following screenshot where it hangs
  very early in the boot process around "Booting SMP configuration".

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-generic 3.13.0.8.12
  ProcVersionSignature: Ubuntu 3.13.0-8.28-generic 3.13.2
  Uname: Linux 3.13.0-8-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.13.2-0ubuntu4
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  ubuntu     3336 F.... pulseaudio
   /dev/snd/controlC1:  ubuntu     3336 F.... pulseaudio
  CasperVersion: 1.337
  CurrentDesktop: Unity
  CurrentDmesg: [  149.733266] ERROR @wl_cfg80211_get_tx_power : error (-1)
  Date: Mon Feb 24 07:08:09 2014
  LiveMediaBuild: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64+mac (20140218)
  MachineType: Apple Inc. MacBookAir6,1
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: noprompt cdrom-detect/try-usb=true persistent file=/cdrom/preseed/username.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-8-generic N/A
   linux-backports-modules-3.13.0-8-generic  N/A
   linux-firmware                            1.124
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 11/12/2013
  dmi.bios.vendor: Apple Inc.
  dmi.bios.version: MBA61.88Z.0099.B07.1311121319
  dmi.board.asset.tag: Base Board Asset Tag#
  dmi.board.name: Mac-35C1E88140C3E6CF
  dmi.board.vendor: Apple Inc.
  dmi.board.version: MacBookAir6,1
  dmi.chassis.type: 10
  dmi.chassis.vendor: Apple Inc.
  dmi.chassis.version: Mac-35C1E88140C3E6CF
  dmi.modalias: dmi:bvnAppleInc.:bvrMBA61.88Z.0099.B07.1311121319:bd11/12/2013:svnAppleInc.:pnMacBookAir6,1:pvr1.0:rvnAppleInc.:rnMac-35C1E88140C3E6CF:rvrMacBookAir6,1:cvnAppleInc.:ct10:cvrMac-35C1E88140C3E6CF:
  dmi.product.name: MacBookAir6,1
  dmi.product.version: 1.0
  dmi.sys.vendor: Apple Inc.

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