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Thread: boot issues on a mac pro

  1. #11
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    Re: boot issues on a mac pro

    new command with or without single produces same result

    [linux-bz image, setup=0x3000,size-0x2393000
    video mode: 1280x1024'32e0]
    cant find frame buffer address

  2. #12
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    Re: boot issues on a mac pro

    oh by the way the 'e ' at the end of the video data-32e0 is not an e looks like one kind of i dont know the character

  3. #13
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    Re: boot issues on a mac pro

    Quote Originally Posted by desertskymc View Post
    new command with or without single produces same result

    [linux-bz image, setup=0x3000,size-0x2393000
    video mode: 1280x1024'32e0]
    cant find frame buffer address
    You can use the EFI shell to find the frame buffer address. In rEFIt, launch the shell, then enter command:

    pci -b

    This would show the pci devices, look for the display controller, for example, in my macbook, it shows:

    Code:
    00 00 02 00 ==> Display Controller - VGA/8514 controller
         Vendor 8086 Device 2A02 Prog Interface 0
    00 00 02 01 ==> Display Controller - Other display controller
         Vendor 8086 Device 2A03 Prog Interface 0
    Then enter (skip the first 00):

    pci 00 02 00 -i -b

    At the last page, it shows the address like this:

    000000051000000 Mem 64 Bits No 000000000100000 0000000501FFFFF
    000000040000000 Mem 64 Bits YES 000000010000000 0000004FFFFFFFF

  4. #14
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    Re: boot issues on a mac pro

    Quote Originally Posted by desertskymc View Post
    hi ,well that setting is correct for the second display, I have a 24 and 17inch screen grub only accessed the 17 inch one, but Ubuntu when operating only used the 24 inch one, I was going to work on that later if possible,
    I will try some of the new command options thanks, I assume I start out as before with search /vmlinuz etc
    I dont know if the 2 screens is a problem - let assume not just yet.

    I did some tests grub32.efi but on a MacBook with intel graphics chip.


    The 'can't find frame buffer...' is not fatal, it just means you wont see anything useful until it gets to the ubuntu desktop - about 30 seconds maybe a minute, but 'single' stops it too soon.

    So remove the 'single' option which leaves it in limbo.

    Try just this minimal linux line leaving out the efifb since it is not working -
    Code:
    grub> search --set /vmlinuz
    grub> linux /vmlinuz root=/dev/sdc4 
    grub> initrd /initrd.img
    grub> boot
    Then just wait for about 1 minute - imagine it booting up until with luck the graphics login.

    May not work, my MacBook has Intel graphics chip, I expect the MacPro has other, but may still work.

    However the root=/dev/sdc4 has to be correct to get there,
    may take a few tries -

    hi i got this far, no booting, screen freezes at end ,here is the command line and reply:
    search /vmlinuz
    hd4,4
    That makes it partition 4, that should be correct
    but hd4 could be sdc or something else.

    You might get abetter idea by running
    Code:
    grub> ls -l
    (To show what is on hd0, hd1, hd2, hd3, hd4 )
    Last edited by pxwpxw; March 15th, 2009 at 09:43 AM. Reason: Missing line at start

  5. #15
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    Re: boot issues on a mac pro

    Quote Originally Posted by bean123 View Post
    You can use the EFI shell to find the frame buffer address. In rEFIt, launch the shell, then enter command:
    Thanks, I missed your post there.

  6. #16
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    Re: boot issues on a mac pro

    Quote Originally Posted by desertskymc View Post
    oh by the way the 'e ' at the end of the video data-32e0 is not an e looks like one kind of i dont know the character
    This is how it should look - (numbers for my MacBook2,1)
    Code:
    Video mode: 1200x800 - 32@59
    Video frame buffer: 0x40000000
    Video line length: 8192
    Can you get the EFI shell info for your MacPro for bean123. (post #13)

    You get into the EFI shell from rEFIt screen, the bottom left terminal icon , and 'exit' to leave, restart after leaving.

    On my MBP I had to page down from
    Shell> pci 01 00 00 -i -b
    to find the Display Controller address information, not at the end.
    (attachment shown for MBP41 )

    bean123 can probably fix the grub code for your MacPro model frame buffer address and the boot should all work normally into ubuntu for you, would be good to have that for the MacPro users.
    Much better solution than trying to work around it.
    Attached Images Attached Images
    Last edited by pxwpxw; March 15th, 2009 at 01:14 PM.

  7. #17
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    Re: boot issues on a mac pro

    command ls - l revealed following info about macpro drive structure:

    device hd0: Partition table
    device hd1: Partition table
    device hd2: Partition table
    Partition hd2,1: Filesystem type fat, label EFI ,UUID 2860-11f4
    Partition hd2,2: Filesystem type hfplus
    Device hd3: Partition table
    Partition hd3,1: Filesystem type fat, UUID4646-150a
    Partition hd3,2: Filesystem type hfplus
    Partition hd3,3: Filesystem type hfplus
    Partition hd3,4: Filesystem type hfplus
    Device hd4: Partition table
    Partition hd4,1: Filesystem type fat UUID 3f3c-1af6
    Partition hd4,2: Filesystem type hfplus
    Partition hd4,3: Filesystem type fat UUID 354c-13eb
    Partition hd4,4: Filesystem type ext2, UUID 883aee28-e5d1-4ac0-8d70-0a11
    5c360901
    Partition hd4.5: Unknown filesystem
    Device cd0: Unknown filesystem

    the shortened command line produced the same result ,freeze, I waited 5 mins no response
    I will next try, beans suggestion from EFI shell
    thanks

  8. #18
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    Re: boot issues on a mac pro

    I tried the shortened command again it booted what do i do in Ubuntu to get this boot to register in refit so it is a boot option or can I?

  9. #19
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    Re: boot issues on a mac pro

    Quote Originally Posted by desertskymc View Post
    I tried the shortened command again it booted what do i do in Ubuntu to get this boot to register in refit so it is a boot option or can I?
    Are you getting a usable Desktop, how are the graphics?

    Put grub.cfg with grub32.efi and you get a menu, if thats what you mean (it must be named just grub.cfg).
    grub32.icns gives you the icon in refit.

    Attached is a full grub.cfg I made, the menunentry "Linux sdc4" is what I think you are booting with, correct it if not.

    Code:
    menuentry "Linux sdc4" {
    	search --set /vmlinuz
    	linux /vmlinuz root=/dev/sdc4
    	initrd /initrd.img
    }
    You dont need a 'boot' command in the menu.

    With that boot, you wont be able to change from desktop to a console, the console video wont work because the efifb is not enabled ( correct me if I am wrong ).

    To set up the old grub-pc from ubuntu can be done using the grub command line in ubuntu,
    when you have the grub.efi working as backup - might need some trial and error.

    You should still get the frame buffer address info for bean for a proper Mac Pro grub32.efi solution.
    Attached Files Attached Files
    Last edited by pxwpxw; March 16th, 2009 at 05:50 AM.

  10. #20
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    Re: boot issues on a mac pro

    Well I had booted once using the grub 32 visible in refit, using the shortened command line without video specs, however i havnt had any success repeating this,so therefor i am again 'locked out'
    within the ubuntu operating system i had attempted to locate the boot cd utility that was installed in the synaptic to make a cd backup, but could not find where the app was accessable from any menus, i also had some 'graphic' problems related to the mouse where the listed options under 'system. applications' and all other menus at the top of the desktop disappeared then later reappeared making it difficult and frustrating to make progress. I am thinking Ubuntu 64bit may be buggy and disfunctional on this mac, maybe i should switch to 32 bt anyway ?
    In the meantime i havnt a clue where i enter the code you have written but will try putting that file where the others live in the Mac hd roots EFI folder so at least i can get back to the Ubuntu OS environment, and , if the new code lines are intended for the grub 32 accessable via the refit menu i try bash in it out. I will also try beans EFI shell to get that info

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