Correct Hi all, David, I own Macbook 6,1 and how I fixed the issue.
Download Firmware Update 1.7 http://support.apple.com/downloads/MacBook_Pro_EFI_Firmware_Update_1_7_ MacBookPro5,5 the same hardware MacBook6,1, to extract MBP55_00AC_03B_LOCKED.scap. mv MBP55_00AC_03B_LOCKED.scap MB61_00C8_B00_LOCKED.scap sudo bless -mount / -firmware MB61_00C8_B00_LOCKED.scap --verbose Shutdown and restart Mac update the firmware and restart automatically. Attention consequences, the MacBook6,1 as new model identifier MacBookPro5,5 but works well, possible problems could rise with future firmware update. Thanks for all, The Power of Community. -- You received this bug notification because you are a member of Mactel Support, which is subscribed to the bug report. https://bugs.launchpad.net/bugs/774089 Title: Booting fails 3 times, works every fourth time after new install of Natty Narwhal amd64 on Macbook Pro Status in EFI Boot Manager: New Status in Release Notes for Ubuntu: New Status in “grub2” package in Ubuntu: Confirmed Bug description: Dear all, I am experiencing a severe problem after a new install of Natty Narwhal on my Macbook Pro last night: The install worked fine, but after reboot nothing came up except fo a black screen. After forcing the machine off and on multiple times I was able to bring up the rEFIt boot menu by pressing and holding the 'Alt' (or Option) key and I can then boot into MacOSX or Ubuntu without a problem. After restarting / powering off I then have to turn the computer on / off the same number of times (3 or 4, I don't remember exactly) where nothing happens until it works again. I am using a MacbookPro 5,5 (13.3 Inch). My harddisk is setup as follows: 200MB Partition for EFI 20GB Partition for OSX 18.6 GB Partition for / (ext4) 108.49 GB Partition for /home (ext4) 1.86 GB Partition for swap Other people also seem to experience the same issue: http://ubuntuforums.org/showthread.php?p=10743955&posted=1#post10743955 This is a pretty big problem for me, so your help is very much appreciated. ProblemType: Bug DistroRelease: Ubuntu 11.04 Package: linux-image-2.6.38-8-generic 2.6.38-8.42 ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2 Uname: Linux 2.6.38-8-generic x86_64 NonfreeKernelModules: nvidia wl AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23. Architecture: amd64 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: NVidia [HDA NVidia], device 0: Cirrus Analog [Cirrus Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: paul 1487 F.... pulseaudio CRDA: Error: [Errno 2] No such file or directory Card0.Amixer.info: Card hw:0 'NVidia'/'HDA NVidia at 0xd3480000 irq 20' Mixer name : 'Cirrus Logic CS4206' Components : 'HDA:10134206,106b4d00,00100301' Controls : 17 Simple ctrls : 10 Date: Sat Apr 30 14:53:06 2011 HibernationDevice: RESUME=UUID=55afdc53-85cf-4d37-98c6-fbdd4f1c8482 InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1) MachineType: Apple Inc. MacBookPro5,5 ProcEnviron: LANGUAGE=en_US:en PATH=(custom, user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic root=UUID=3aad2af7-44e6-4e93-8055-7e1818600eac ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-2.6.38-8-generic N/A linux-backports-modules-2.6.38-8-generic N/A linux-firmware 1.52 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 06/15/09 dmi.bios.vendor: Apple Inc. dmi.bios.version: MBP55.88Z.00AC.B03.0906151708 dmi.board.asset.tag: Base Board Asset Tag# dmi.board.name: Mac-F2268AC8 dmi.board.vendor: Apple Inc. dmi.chassis.asset.tag: Asset Tag# dmi.chassis.type: 10 dmi.chassis.vendor: Apple Inc. dmi.chassis.version: Mac-F2268AC8 dmi.modalias: dmi:bvnAppleInc.:bvrMBP55.88Z.00AC.B03.0906151708:bd06/15/09:svnAppleInc.:pnMacBookPro5,5:pvr1.0:rvnAppleInc.:rnMac-F2268AC8:rvr:cvnAppleInc.:ct10:cvrMac-F2268AC8: dmi.product.name: MacBookPro5,5 dmi.product.version: 1.0 dmi.sys.vendor: Apple Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/efibootmgr/+bug/774089/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~mactel-support Post to : mactel-support@lists.launchpad.net Unsubscribe : https://launchpad.net/~mactel-support More help : https://help.launchpad.net/ListHelp