Fedora 18 fails to boot with updated kernels

asked 2013-05-20 15:22:28 -0500

BRPocock gravatar image

updated 2014-09-30 23:10:34 -0500

mether gravatar image

On a laptop machine, I FedUp'ed from Fedora 17 to 18. However, when I attempt to boot with any upgraded kernels (> 3.8.4), the system fails to start correctly.

The HDD is encrypted. I get the Plymouth password prompt, and hit ESC to see the console log crawl afterwards; it appears to be accepted, but shortly after display "Welcome to Fedora 18, Spherical Cow" the host reverses direction and does an orderly shutdown.

Unfortunately, I don't know how to save the boot log in these cases --- it doesn't look like the root ever pivots to my installed system from the initrd?

In particular, I fail to boot with kernels 3.8.8-202 nor 3.9.2-200, but 3.8.4-202 works all right.

(This is an x86_64 with Intel graphics, if that helps at all.)

Is there a way to determine what causes the boot to fail? EG. to save the boot log?

Bonus points if anyone can guess what might cause this particular failure without an error message to go by...! :-)

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Can you boot into emergency mode to troubleshoot? ie append systemd.unit=emergency.target to your boot args?

randomuser gravatar imagerandomuser ( 2013-05-20 21:15:26 -0500 )edit

Ironically, I'm also trying to "hack" the grub2 bootloader password so that I could try something like that. I'm experimenting with some (really ornate and difficult to follow) docs from Ubuntu, since Grub2 literally has no documentation whatsoever shipped with it.

BRPocock gravatar imageBRPocock ( 2013-05-20 21:20:13 -0500 )edit

http://www.gnu.org/software/grub/manual/grub.html -- You don't know your own bootloader password?

randomuser gravatar imagerandomuser ( 2013-05-21 00:05:56 -0500 )edit

I did, until I ran FedUp …

BRPocock gravatar imageBRPocock ( 2013-05-21 08:10:42 -0500 )edit