9

Is there a way to exit the splash screen during boot and view the verbose boot without rebooting?

For future viewers sake: this is for GRUB2 on Ubuntu.

3 Answers 3

9

If you use grub2 then the following should do the trick for every installed kernel on every boot:

  • make a backup copy of /etc/default/grub
  • Open up /etc/default/grub as root
  • Change the line GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" to GRUB_CMDLINE_LINUX_DEFAULT="" (if there is more than only quiet and splash between the quotes, keep it!)
  • save the changes
  • run sudo update-grub
  • reboot

This way this change will even be permanent after a kernel update. Also this is the only way that works in grub2 since boot/grub/menu.lst was in grub1 and is not used anymore in grub2.

More about configuring grub2 in ubuntu: https://help.ubuntu.com/community/Grub2

2
  • 2
    If there is anything else except the words quiet splash it should be kept. So, just delete quiet splash. Commented Mar 4, 2016 at 8:23
  • Of course you are right. I have edited your comment right into the answer.
    – NobbZ
    Commented Mar 7, 2016 at 14:18
5

On bootup, press F2.

Now, you'll have the verbose feedback mode.

4
  • 1
    Doing this only shows the verbose text once. You will have to do it on every reboot.
    – MaxMackie
    Commented Dec 14, 2011 at 20:10
  • @MaxMackie however, if you only need it once, then it's great. Also has the advantage that you don't have to edit your GRUB. Messing with a bootloader like that is a little hairy sometimes, even if you know what you're doing.
    – jrg
    Commented Dec 14, 2011 at 20:13
  • At what point? Like just before the splash screen?
    – stuartc
    Commented Dec 15, 2011 at 6:28
  • @stuartc At any point during bootup, before the display manager starts.
    – jrg
    Commented Dec 15, 2011 at 14:36
1

This works only for grub versions prior than grub2!

Open /boot/grub/menu.lst. You'll see a block like this:

title xxx
root (hd0,0)
kernel /boot/vmlinuz-2.6.22-14-generic root=UUID=xxxx ro quiet splash
initrd /boot/initrd.img-2.6.22-14-generic
quiet

Change it to:

title xxx
root (hd0,0)
kernel /boot/vmlinuz-2.6.22-14-generic root=UUID=xxxx ro
initrd /boot/initrd.img-2.6.22-14-generic

Note that the kernel version numbers in your case may be different. Save the file and the splash screen should be replaced with a verbose boot from now on.

1
  • I had a poke around, I'm afraid Ubuntu is using GRUB2 in recent versions, and menu.lst has been replaced by grub.cfg which is autogenerated by a pile of scripts.. :/
    – stuartc
    Commented Dec 14, 2011 at 20:20

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