Arch Linux

Aventinus

Member

From: On A Personal Voyage

Registered: 2010-09-11

Posts: 147

[SOLVED] Kernel Panic after -Syu

After last night's pacman -Syu I get this kernel panic message when I boot my PC -> http://imageshack.us/photo/my-images/14 … 60024.jpg/
Any idea what caused it and how to fix it?

Thanks in advance.

Last edited by Aventinus (2011-08-22 11:39:35)

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"Somewhere, something incredible is waiting to be known." - Carl Sagan

triplesquarednine

Member

Registered: 2011-04-12

Posts: 630

Re: [SOLVED] Kernel Panic after -Syu

it looks like initrd is missing from grub or grub2.

I use grub2, so in /boot/grub/grub.cfg i would need this line; (the starred one)

menuentry 'Arch Linux, with Linux rt' --class archlinux --class gnu-linux --class gnu --class os {
	load_video
	set gfxpayload=keep
	insmod gzio
	insmod part_msdos
	insmod ext2
	set root='(hd0,msdos1)'
	search --no-floppy --fs-uuid --set=root 85c30fe7-09dc-40b3-8210-3e0b5ebf9e9f
	echo	'Loading Linux rt ...'
	linux	/boot/vmlinuz-linux-rt root=UUID=85c30fe7-09dc-40b3-8210-3e0b5ebf9e9f ro  quiet threadirqs force=hpet init=/sbin/e4rat-preload elevator=bfq
	echo	'Loading initial ramdisk ...'
	initrd	/boot/initramfs-linux-rt.img      *****

in grub, i would expect to see this line;

# (0) Arch Linux
title  Arch Linux
root   (hd0,0)
kernel /vmlinuz-linux root=/dev/sda3 ro
initrd /initramfs-linux.img       ****

I don't know what the deal is, but it would seem as of late, kernel updates / installations are creating initramfs - but they are not being added to grub/grub2.  I recently installed linux-rt - and had to add initrd manually, after. Your error message also suggests that you are having the same problem.

adding initrd should fix the problem

EDIT: Obviously, you need to look at your own kernel's initrd for the proper file name

Last edited by triplesquarednine (2011-08-21 20:05:55)

triplesquarednine

Member

Registered: 2011-04-12

Posts: 630

Re: [SOLVED] Kernel Panic after -Syu

just reading through threads, you're not the only one with this issue.

Although, this thread was closed/dustbin, as the OP didn't give any information about his problem, and rather than figuring it out he just re-installed Arch (ouch, for a problem that takes to seconds to fix);

https://bbs.archlinux.org/viewtopic.php?id=124953

he says

I do not remember the error messages ... something about init. Afterwards the system got a panic in early kernel user space, and so was not able to boot.

probably the same problem that both you and i encountered. I'm going to read through some more threads, and see if this problem is being addressed. This appears to be a bug, unless i am missing something here?

cheerz

Aventinus

Member

From: On A Personal Voyage

Registered: 2010-09-11

Posts: 147

Re: [SOLVED] Kernel Panic after -Syu

That did the trick, thank you so much for your time! For now I put linux on the ignorepkg so I won't have similar problems when upgrading.

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"Somewhere, something incredible is waiting to be known." - Carl Sagan

triplesquarednine

Member

Registered: 2011-04-12

Posts: 630

Re: [SOLVED] Kernel Panic after -Syu

hey no problem

as soon as i saw that screenshot, i knew what was up.

glad i could help