Have you tried using apt-get
to (re-)install the kernel?
Try booting the Live CD or USB which matches your Ubuntu install, then chroot
, and then the command below.
apt-get -V install linux-generic linux-image-generic linux-headers-generic
- Note: If the above does not work, you could also try either
--reinstall
or doing a remove
of the above packages and then trying to install
again.
If none of the above works, please update your question with details about how it failed.
The suggestion above is based on what apt-get
did to upgrade the kernel of a clean install of Ubuntu 12.04 LTS 64-bit in a virtual machine. The packages which apt-get
decided to install to update the kernel were linux-generic
, linux-image-generic
, and linux-headers-generic
.
I have included below the output I got from running the apt-get
command above in case it is of any possible use.
It appears to me that both vmlinuz-3.2.0-25-generic
and initrd.img-3.2.0-25-generic
were generated by running the update-initramfs
script during installation post-processing. So I doubt that just copying the files from one installation to another would work unless the installations were identical (enough).
irrational@VB64Too:~$ sudo apt-get -V install linux-generic linux-image-generic linux-headers-generic
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following extra packages will be installed:
linux-headers-3.2.0-25 (3.2.0-25.40)
linux-headers-3.2.0-25-generic (3.2.0-25.40)
linux-image-3.2.0-25-generic (3.2.0-25.40)
Suggested packages:
fdutils (5.5-20060227-5)
linux-doc-3.2.0 ()
linux-source-3.2.0 (3.2.0-25.40)
linux-tools (3.2.0.25.27)
The following NEW packages will be installed:
linux-headers-3.2.0-25 (3.2.0-25.40)
linux-headers-3.2.0-25-generic (3.2.0-25.40)
linux-image-3.2.0-25-generic (3.2.0-25.40)
The following packages will be upgraded:
linux-generic (3.2.0.23.25 => 3.2.0.25.27)
linux-headers-generic (3.2.0.23.25 => 3.2.0.25.27)
linux-image-generic (3.2.0.23.25 => 3.2.0.25.27)
3 upgraded, 3 newly installed, 0 to remove and 247 not upgraded.
Need to get 50.6 MB of archives.
After this operation, 216 MB of additional disk space will be used.
Do you want to continue [Y/n]?
Get:1 http://us.archive.ubuntu.com/ubuntu/ precise-updates/main linux-image-3.2.0-25-generic amd64 3.2.0-25.40 [38.2 MB]
Get:2 http://us.archive.ubuntu.com/ubuntu/ precise-updates/main linux-generic amd64 3.2.0.25.27 [1,710 B]
Get:3 http://us.archive.ubuntu.com/ubuntu/ precise-updates/main linux-image-generic amd64 3.2.0.25.27 [2,648 B]
Get:4 http://us.archive.ubuntu.com/ubuntu/ precise-updates/main linux-headers-3.2.0-25 all 3.2.0-25.40 [11.4 MB]
Get:5 http://us.archive.ubuntu.com/ubuntu/ precise-updates/main linux-headers-3.2.0-25-generic amd64 3.2.0-25.40 [958 kB]
Get:6 http://us.archive.ubuntu.com/ubuntu/ precise-updates/main linux-headers-generic amd64 3.2.0.25.27 [2,644 B]
Fetched 50.6 MB in 36s (1,398 kB/s)
Selecting previously unselected package linux-image-3.2.0-25-generic.
(Reading database ... 141202 files and directories currently installed.)
Unpacking linux-image-3.2.0-25-generic (from .../linux-image-3.2.0-25-generic_3.2.0-25.40_amd64.deb) ...
Done.
Preparing to replace linux-generic 3.2.0.23.25 (using .../linux-generic_3.2.0.25.27_amd64.deb) ...
Unpacking replacement linux-generic ...
Preparing to replace linux-image-generic 3.2.0.23.25 (using .../linux-image-generic_3.2.0.25.27_amd64.deb) ...
Unpacking replacement linux-image-generic ...
Selecting previously unselected package linux-headers-3.2.0-25.
Unpacking linux-headers-3.2.0-25 (from .../linux-headers-3.2.0-25_3.2.0-25.40_all.deb) ...
Selecting previously unselected package linux-headers-3.2.0-25-generic.
Unpacking linux-headers-3.2.0-25-generic (from .../linux-headers-3.2.0-25-generic_3.2.0-25.40_amd64.deb) ...
Preparing to replace linux-headers-generic 3.2.0.23.25 (using .../linux-headers-generic_3.2.0.25.27_amd64.deb) ...
Unpacking replacement linux-headers-generic ...
Setting up linux-image-3.2.0-25-generic (3.2.0-25.40) ...
Running depmod.
update-initramfs: deferring update (hook will be called later)
Examining /etc/kernel/postinst.d.
run-parts: executing /etc/kernel/postinst.d/initramfs-tools 3.2.0-25-generic /boot/vmlinuz-3.2.0-25-generic
update-initramfs: Generating /boot/initrd.img-3.2.0-25-generic
run-parts: executing /etc/kernel/postinst.d/pm-utils 3.2.0-25-generic /boot/vmlinuz-3.2.0-25-generic
run-parts: executing /etc/kernel/postinst.d/update-notifier 3.2.0-25-generic /boot/vmlinuz-3.2.0-25-generic
run-parts: executing /etc/kernel/postinst.d/zz-update-grub 3.2.0-25-generic /boot/vmlinuz-3.2.0-25-generic
Generating grub.cfg ...
Found linux image: /boot/vmlinuz-3.2.0-25-generic
Found initrd image: /boot/initrd.img-3.2.0-25-generic
Found linux image: /boot/vmlinuz-3.2.0-23-generic
Found initrd image: /boot/initrd.img-3.2.0-23-generic
Found memtest86+ image: /boot/memtest86+.bin
Found Windows 7 (loader) on /dev/sda1
done
Setting up linux-image-generic (3.2.0.25.27) ...
Setting up linux-generic (3.2.0.25.27) ...
Setting up linux-headers-3.2.0-25 (3.2.0-25.40) ...
Setting up linux-headers-3.2.0-25-generic (3.2.0-25.40) ...
Setting up linux-headers-generic (3.2.0.25.27) ...
irrational@VB64Too:~$