amr@amr-Compaq-Presario-CQ61-Notebook-PC:~$ sudo apt-get install linux-generic
[sudo] password for amr:
Reading package lists... Done
Building dependency tree
Reading state information... Done
linux-generic is already the newest version.
The following packages will be REMOVED:
  linux-image-3.11.0-12-generic linux-image-extra-3.11.0-12-generic
0 upgraded, 0 newly installed, 2 to remove and 0 not upgraded.
17 not fully installed or removed.
After this operation, 136 MB disk space will be freed.
Do you want to continue [Y/n]? y
(Reading database ... 401370 files and directories currently installed.)
Removing linux-image-extra-3.11.0-12-generic ...
Examining /etc/kernel/postrm.d .
run-parts: executing /etc/kernel/postrm.d/initramfs-tools 3.11.0-12-generic /boot/vmlinuz-3.11.0-12-generic
update-initramfs: Deleting /boot/initrd.img-3.11.0-12-generic
run-parts: executing /etc/kernel/postrm.d/zz-update-grub 3.11.0-12-generic /boot/vmlinuz-3.11.0-12-generic
/usr/sbin/grub-mkconfig: 11: /etc/default/grub: splash: not found
run-parts: /etc/kernel/postrm.d/zz-update-grub exited with return code 127
Failed to process /etc/kernel/postrm.d at /var/lib/dpkg/info/linux-image-extra-3.11.0-12-generic.postrm line 328.
dpkg: error processing linux-image-extra-3.11.0-12-generic (--remove):
 subprocess installed post-removal script returned error exit status 1
Removing linux-image-3.11.0-12-generic ...
Examining /etc/kernel/postrm.d .
run-parts: executing /etc/kernel/postrm.d/initramfs-tools 3.11.0-12-generic /boot/vmlinuz-3.11.0-12-generic
update-initramfs: Deleting /boot/initrd.img-3.11.0-12-generic
run-parts: executing /etc/kernel/postrm.d/zz-update-grub 3.11.0-12-generic /boot/vmlinuz-3.11.0-12-generic
/usr/sbin/grub-mkconfig: 11: /etc/default/grub: splash: not found
run-parts: /etc/kernel/postrm.d/zz-update-grub exited with return code 127
Failed to process /etc/kernel/postrm.d at /var/lib/dpkg/info/linux-image-3.11.0-12-generic.postrm line 328.
dpkg: error processing linux-image-3.11.0-12-generic (--remove):
 subprocess installed post-removal script returned error exit status 1
Errors were encountered while processing:
 linux-image-extra-3.11.0-12-generic
 linux-image-3.11.0-12-generic
E: Sub-process /usr/bin/dpkg returned an error code (1)
amr@amr-Compaq-Presario-CQ61-Notebook-PC:~$