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This has happened to me 3 times now, so it is definitely something I am doing. I'm hoping someone else has seen this or knows what the problem is.

First, I installed Ubuntu 12.04 from the ubuntu-12.04.4-desktop-amd64.iso image downloaded directly from the Ubuntu website. The MD5 checksums of the install image match the MD5 sums on the website:

mbpr15:source AWT$ md5 ubuntu-12.04.4-desktop-amd64.iso 
MD5 (ubuntu-12.04.4-desktop-amd64.iso) = c7f439e864d28d9e5ca2aa885c4ec4cb

Next, I followed the steps on Google's Android Open Source Project (AOSP) to prepare your Linux system for Android builds. Specifically, the steps relevant to Linux were:

$ sudo apt-get update
$ sudo apt-get install openjdk-7-jdk

$ sudo apt-get install git gnupg flex bison gperf build-essential \
  zip curl libc6-dev libncurses5-dev:i386 x11proto-core-dev \
  libx11-dev:i386 libreadline6-dev:i386 libgl1-mesa-glx:i386 \
  libgl1-mesa-dev g++-multilib mingw32 tofrodos \
  python-markdown libxml2-utils xsltproc zlib1g-dev:i386

$ ulimit -S -n 1024

Then I do the checkout and build and everything works perfectly as long as I don't shut down. Once I do a shutdown, this thing will not boot. It gets stuck at this screen:

Ubuntu boot splashscreen

And it will sit here forever. It doesn't seem to take any input at all (Esc, Alt-F1, Ctrl-Alt-F1, etc...) and the progress indicator has stopped.

Has anyone seen this or know what's causing it to hang here? I can boot to a live CD and access my filesystem, make a backup of my files, and reinstall. But as soon as I shut down, this happens again.

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migrated from Jun 5 '14 at 13:59

This question came from our site for system and network administrators.

try F2 for console info. if thats not directly showing you the error: go in grub and remove quiet and splash from the cmdline (you can find howtos how to do that on SF) – Dennis Nolte Jun 5 '14 at 13:50
Ok, trying that now. F2 does nothing, but I booted to the grub editor and removed the quiet and splash options. It booted to a terminal login prompt and I can log in. Strange. How do I launch the Unity desktop from command line? – AWT Jun 5 '14 at 13:58
Fixed it. The solution was to edit grub as you suggested, which booted me to a terminal login. I couldn't launch Unity because I got a whole mess of errors. But I reinstalled ubuntu desktop (sudo apt-get install --reinstall ubuntu-desktop) and then startx booted me to my desktop. Subsequent reboots are ok, no hangs. Put that into an answer and I will accept it, thanks for the help. – AWT Jun 5 '14 at 14:31
up vote 8 down vote accepted

first you should check if you can change to the console output by pressing F2 or ALT-F2 (never remember which one )

If that does not work or do not show you some error you should reboot and enter the grub boot menu with pressing "Shift" while booting.

When you are in the menu you should remove the "splash" and the "quiet" entries from the kernel commandline.

This way you will get the "normal" output Ubuntu (and a lot of other distributions these days) usually hides from you.

With the error(s) you might see there you can debug your issue and fix it.

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I have tracked the cause of this problem to running Ubuntu on a virtual machine and installing the "mesa" updates: libgl1-mesa-glx:i386 libgl1-mesa-dev. If I do not install these updates, I don't get the boot hand and I don't need to reinstall ubuntu-desktop. – AWT Feb 4 '15 at 20:34

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