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Thread: Ubuntu won't boot without monitor plugged in

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  1. #1
    Join Date
    Mar 2008
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    25

    [SOLVED] Ubuntu won't boot without monitor plugged in

    I've been searching all night, and found several topics on the matter, but all were 1-2 years old and none seemed to have a solution, but I'm hoping perhaps a fix has been found with the later versions of Ubuntu.

    Here's my problem:
    I'm running Ubuntu Server 9.04, and I'm hoping to make it headless. I've installed vnc4server and all that is working just fine, as long as I have a monitor plugged in. Once I remove the monitor however, it won't boot. I read in some other topics that apparently it boots automaticly into low graphics mode, and a window popping up informing about it, but it's hard to "check" it, when i have no monitor/mouse/keyboard plugged in

    I suppose this is only a problem when using GUI, and in most other topics the OP simply went using CLI instead, but as I'm still fairly new to Linux, I'd prefer having a graphical interface for now.

    I suppose you could also wonder why I don't just boot it and then unplug monitor, considering Ubuntu servers rarely needs rebooting, but as the server will not be in my own home, but at a place where powercuts are pretty common, I need it to be a be all on autostart, as the server will be placed at someone who doesn't know the first thing about computers.

    Any help is very much appriciated, thanks
    Last edited by Vakz; July 26th, 2009 at 05:03 PM.

  2. #2
    Join Date
    Nov 2007
    Location
    ~/uk
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    121
    Distro
    Ubuntu 9.10 Karmic Koala

    Re: Ubuntu won't boot without monitor plugged in

    Hi,
    I would check the BIOS for "halt on ***" entries and make sure halt on VGA or similar is set to off.

    Doug.

  3. #3
    Join Date
    Mar 2008
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    Re: Ubuntu won't boot without monitor plugged in

    Quote Originally Posted by doug1212 View Post
    Hi,
    I would check the BIOS for "halt on ***" entries and make sure halt on VGA or similar is set to off.

    Doug.
    Hmm, like I said i'm pretty new, and tbh i have no idea to do what you just said

  4. #4
    Join Date
    Nov 2007
    Location
    ~/uk
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    121
    Distro
    Ubuntu 9.10 Karmic Koala

    Re: Ubuntu won't boot without monitor plugged in

    Find the key combination to unlock access the BIOS settings (use Google or handbook) and press them/it while the machine boots then have a look through the entries for something that says halt on VGA or something similar and set it to OFF then save and reboot.
    Doug.

  5. #5
    Join Date
    Mar 2008
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    25

    Re: Ubuntu won't boot without monitor plugged in

    aha, ok. Give me a minute, and i'll see what i can find

    Allright, i looked though BIOS (it was probably the most simple BIOS i've ever seen )

    EDIT1: Couldn't find any mention of "half on", or anything that mentioned VGA. Barely anything about monitor at all, actaully

    EDIT2: Allright. I started the computer without monitor plugged in, and the plugged in when it had already booted. What it says is this:

    Ubuntu is running in low-graphics mode.
    The following error was encountered. You may need to update your configuration to solve this.

    (EE) NV(0): No valid initial configuration found
    (EE) Screen(s) found, but none have a useable configuration.


    So evidently, Ubuntu boots. But I need to click ok on the window that pops up, which i of course can't when i don't have a monitor plugged in. Pretty ironic, really.
    Last edited by Vakz; July 26th, 2009 at 02:10 PM. Reason: New information

  6. #6
    wojox is offline I Ubuntu, Therefore, I Am
    Join Date
    Apr 2009
    Beans
    8,628

    Re: Ubuntu won't boot without monitor plugged in

    The computer will still load the GUI. Is there an automatic login option on this vnc4server somewhere? Personally I would just set up ssh and log in through the terminal. There's no better time to learn.

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