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Thread: Boot Stops At Purple Splash Screen

  1. #1
    Join Date
    Nov 2011
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    1,285
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    Ubuntu Development Release

    Boot Stops At Purple Splash Screen

    Using the instructions here, I have 12.04.02 successfully installed on my MacBook Pro 8,2. This install uses ReFind.

    However, while it boots with ReFind via a Super Grub2 CD, it does not boot successfully via ReFind alone. The Grub menu displays correctly, then the purple splash screen with the Ubuntu logo in the center. As soon as the 5 red dots display under the logo, the boot stops.

    How can I get the boot to complete successfully?

    [EDIT: Booting in recovery mode and then launching the failsafe graphics mode, I see that it fails to load the GLX extension and then reports "No Screens Found". Xorg.Failsafe.log shows this: "(EE) VESA(0): Cannot read V_BIOS(3) input/output error", then the vesa, int10, and vbe modules are unloaded and a fatal "No Screens Found" error is displayed.]
    Last edited by buzzingrobot; February 23rd, 2013 at 09:35 PM.

  2. #2
    Join Date
    Mar 2010
    Location
    USA
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    Hidden!
    Distro
    Ubuntu Development Release

    Re: Boot Stops At Purple Splash Screen

    Quote Originally Posted by buzzingrobot View Post
    EDIT: Booting in recovery mode and then launching the failsafe graphics mode, I see that it fails to load the GLX extension and then reports "No Screens Found". Xorg.Failsafe.log shows this: "(EE) VESA(0): Cannot read V_BIOS(3) input/output error", then the vesa, int10, and vbe modules are unloaded and a fatal "No Screens Found" error is displayed.
    So.. as you can see by the errors, you are having a graphics problem.

    You are already past grub and booting the kernel by the time it gets to the plymouth splash where you lock up.

    If at the grub menu, you arrow down one to keep the menu from disappearing... then arrow to the option you want (Ubuntu)... then press <e>.

    This will openthe editor on that menu item. Arrow down to the first line that starts with "linux" and replace "quiet splash" with "Single --verbose". Press <cntrl><x> to boot. This should boot the kernel and get you to a text-based tty console.

    Log in and and copy down the results of:
    Code:
    lspci -vnn | grep -i VGA
    Post those results here

    Then try:
    Code:
    startx
    Tell me what it does.
    Multi-Boot= Various flavours of Windows, Linux and Unix... Ubuntu user # 33563, Linux user # 533637
    Sticky: [all variants] Graphics Resolution- Upgrade /Blank Screen after reboot
    Boot Info Script courtesy of community member meierfra

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