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Thread: Can not log in to the server due to 'lock screen'

  1. #1
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    Red face Can not log in to the server due to 'lock screen'

    Installed Ubuntu 12.04 Server yesterday.Now, whenever I boot, once i get past grub, it goes to a 'lock screen'. I call it the lock screen because I can't get out of that screen and to the console login prompt. I've tried every key on the keyboard, plus Ctrl+C, and nothing gets me to the login prompt. The only way I can get a shell is to SSH in through the LAN from another computer.

    The lock screen shows "Ubuntu 12.04" and four dots which change color between red and white.

    Ideally, how do I prevent that lock screen from coming up at all? Or, barring that option, how do I get off of that lock screen and back to the system console?

  2. #2
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    Re: Can not log in to the server due to 'lock screen'

    If you just want to get to a console screen, try ctrl+alt+F1. There are six tty's, ctrl+alt+F(1-6), and ctrl+alt+F7 is the graphical one. This is for the desktop though, so if it is different for server then sorry, I won't be much help

  3. #3
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    Re: Can not log in to the server due to 'lock screen'

    I'm not too sure. Maybe a screen shot would help.

    Remember that you should be able to ctrl-alt f2 to get a console. If you're running your server headless, you might also try:

    Code:
    sudo apt-get remove gdm

  4. #4
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    Re: Can not log in to the server due to 'lock screen'

    Quote Originally Posted by joetait View Post
    If you just want to get to a console screen, try ctrl+alt+F1. There are six tty's, ctrl+alt+F(1-6), and ctrl+alt+F7 is the graphical one. This is for the desktop though, so if it is different for server then sorry, I won't be much help
    +1
    Yes this.

  5. #5
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    Wink Re: Can not log in to the server due to 'lock screen'

    Thanks for the lead! Research shows ...

    For # = 1 through 10, Ctrl+Alt+F# gives me a completely blank screen, except that Ctrl+Alt+F7 takes me back to the lock screen. Enter, and patience, gives me a login prompt. I guess that when I tested every key on the keyboard it must have gotten upset by all the other keys I hit before I hit Enter.

    Thanks! Solved!

  6. #6
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    Re: Can not log in to the server due to 'lock screen'

    I wouldn't say it's solved. Maybe worked around but not solved.
    Quote Originally Posted by AndyCanfield View Post
    The lock screen shows "Ubuntu 12.04" and four dots which change color between red and white.
    I think that is not a lock screen but is the Ubuntu boot logo. Can you "Remove" it by pressing Escape? It should show some messages regarding the boot process, usually disk checks and starting services. Ubuntu Server shouldn't even _have_ X installed so it can't in theory have a lockscreen by default.
    Quote Originally Posted by Linus Torvalds
    "Most good programmers do programming not because they expect to get paid or get adulation by the public, but because it is fun to program."

  7. #7
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    Re: Can not log in to the server due to 'lock screen'

    Quote Originally Posted by Lisiano View Post
    I wouldn't say it's solved. Maybe worked around but not solved.
    Solved in the sense that I can get past that screen. A better 'solution' would be to not show that screen at all, but immediately show the login prompt.
    II think that is not a lock screen but is the Ubuntu boot logo. Can you "Remove" it by pressing Escape? It should show some messages regarding the boot process, usually disk checks and starting services. Ubuntu Server shouldn't even _have_ X installed so it can't in theory have a lockscreen by default.
    It showed nothing but the text "Ubuntu 12.04" and the four white dots. The dots kept changing from red to white to red again, proving that the system was not dead.

    No, Escape did not get me off of that screen.

    Why do you think that "lock screen" is defined as "XWindows"? To me, any screen that appears to be deliberately designed to lock the console is a lock screen. However, I used quotes around 'lock screen' in the title because I was not sure if it was designed to be a lock screen.

    I admit now that it apparently is not deliberately designed to lock the console. However, the developers of this screen ought to have added text like "Press Enter for a login prompt". The very fact that the screen shows no instructions as to how to get off of that screen, and the screen on my computer ignores most keyboard input, is poor user interface design.

  8. #8
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    Re: Can not log in to the server due to 'lock screen'

    Yes, that screen is the bootlogo or splash or plymouth boot logo or whatever else you want to call it. And I just associate lock screens with X.

    You can try booting and disabling the logo, while booting (If you don't see Grub, hold shift) press E and locate "quiet splash" and remove splash from it, or also remove quiet if you want a more verbose boot, if that works then to make it permanent, open /etc/default/grub as root using nano or vi (Or whatever else you fancy), find this line
    Code:
    GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
    And change acordingly. Then just issue a
    Code:
    sudo update-grub
    Quote Originally Posted by Linus Torvalds
    "Most good programmers do programming not because they expect to get paid or get adulation by the public, but because it is fun to program."

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