[natty] GRUB no longer finds kernel with separate /boot partition

[Anders Kaseorg]

Binary package hint: grub2

After upgrading from grub-pc 1.98+20100804-5ubuntu3 (maverick) to 1.98+20100804-6ubuntu1 (natty), GRUB no longer finds my kernel, because grub.cfg was rewritten to look for the kernel in /boot/boot (/boot is a separate partition):

 menuentry 'Ubuntu, with Linux 2.6.36-1-generic' --class ubuntu --class gnu-linux --class gnu --class os {
  recordfail
  insmod part_msdos
  insmod ext2
  set root='(hd0,msdos6)'
  search --no-floppy --fs-uuid --set b9bb5774-dff3-4c7f-9399-f14513d93c41
- linux /vmlinuz-2.6.36-1-generic root=/dev/mapper/btree-ubuntu ro quiet splash
- initrd /initrd.img-2.6.36-1-generic
+ linux /boot/vmlinuz-2.6.36-1-generic root=/dev/mapper/btree-ubuntu ro quiet splash
+ initrd /boot/initrd.img-2.6.36-1-generic
 }

Downgrading back to -5ubuntu3 reverses the change and lets the system boot normally.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: grub-pc 1.98+20100804-6ubuntu1
ProcVersionSignature: Ubuntu 2.6.36-1.7-generic 2.6.36
Uname: Linux 2.6.36-1-generic x86_64
NonfreeKernelModules: openafs wl
Architecture: amd64
Date: Sat Oct 23 00:15:07 2010
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release Candidate amd64 (20091020.3)
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.utf8
 SHELL=/bin/bash
SourcePackage: grub2

[syscon-hh (syscon-kono)]

Same to me!
Starting "vmlinuz" and "initrd.img" by using the grub-cmdline with the given parameters starts without restrictions.

[Al. (bug-odesk)]

Same thing here. Have to change /boot/vmlinuz... to /vmlinuz... to boot system.

[syscon-hh (syscon-kono)]

to fix this - search for file -> "/usr/lib/grub/grub-mkconfig_lib" and change:

go to line 45:

make_system_path_relative_to_its_root ()
{

    ${grub_mkrelpath} $1
}

to:
make_system_path_relative_to_its_root ()
{
    path="`${grub_mkrelpath} $1`"
# ${grub_mkrelpath} $1
}
and it seems to be working fine.

[Anders Kaseorg (andersk)]

This was caused by the addition of debian/patches/zfs_fix_mkrelpath.patch in Debian’s 1.98+20100804-6 (see http://bugs.debian.org/600578 ). This patch was from upstream, but was soon reverted upstream because of this problem. I confirmed that removing the patch makes GRUB work again.

According to http://bugs.debian.org/601087 , Debian will upload a fix today, which we’ll be able to merge into natty.

[Anders Kaseorg (andersk)]

Fixed in 1.98+20100804-7ubuntu1.

[Rykel from Singapore (rykel98)]

Hi, I am not sure if my problem is the same, but since removing kernel 2.6.38-8-generic using Synaptic, rebooting and then reinstalling the kernel using Synaptic again, GRUB has NOT been able to update the menu list at startup.

No matter how many times I removed and reinstalled grub-pc/grub-common, the menu stays stuck with an older kernel.

Please advise?