Plymouth is the application which provides the graphical "bootsplash" for Ubuntu.

Debugging

This section is for advanced users only.

You can set Plymouth to overlay internal debug messages by passing the following command-line option:

• plymouth:debug

For example, if you are running Ubuntu Maverick (10.10):

1. Power on system

2. Hold down the SHIFT key until the Grub boot menu appears

3. Type "e" to edit the default kernel command-line

4. Use the arrow keys to go to the end of the line which starts "linux /boot/vmlinuz ..."

5. Add a space character, followed by "plymouth:debug"
   Notes:

   • If you're interested in the overall boot, you may wish to remove the "quiet" keyword too)

6. Type CONTROL+x to boot

7. Once the system has booted, you can view all the Plymouth debug output in file:

   • /var/log/plymouth-debug.log

Notes:

• If you are using the live CD, the process is slightly different:
  1. Power on system
  2. Hold down the SHIFT key until ISOLINUX "boot:" prompt appears

  3. Type, "live plymouth:debug"