Обновления не выполняются из-за & ldquo; / etc / default / grub: splash ”: не найдено & rdquo; ошибка

Я обновил Ubuntu 11.10 до 12.04 LTS сразу после его выпуска (апрель 2012). С тех пор обновления (новые ядра и др.) Выполнялись регулярно, но в последнее время неожиданно происходит сбой обновления.

Что является причиной проблемы и как ее можно решить?

Информация о терминале после последней попытки обновления:

ariel@ariel-MS-7592:~$ sudo apt-get upgrade
Reading package lists... Done
Building dependency tree       
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
3 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Do you want to continue [Y/n]? y
Setting up linux-image-3.2.0-26-generic (3.2.0-26.41) ...
Running depmod.
update-initramfs: deferring update (hook will be called later)
Examining /etc/kernel/postinst.d.
run-parts: executing /etc/kernel/postinst.d/dkms 3.2.0-26-generic /boot/vmlinuz-3.2.0-26-generic
run-parts: executing /etc/kernel/postinst.d/initramfs-tools 3.2.0-26-generic /boot/vmlinuz-3.2.0-26-generic
update-initramfs: Generating /boot/initrd.img-3.2.0-26-generic
run-parts: executing /etc/kernel/postinst.d/pm-utils 3.2.0-26-generic /boot/vmlinuz-3.2.0-26-generic
run-parts: executing /etc/kernel/postinst.d/update-notifier 3.2.0-26-generic /boot/vmlinuz-3.2.0-26-generic
run-parts: executing /etc/kernel/postinst.d/zz-update-grub 3.2.0-26-generic /boot/vmlinuz-3.2.0-26-generic
/usr/sbin/grub-mkconfig: 11: /etc/default/grub: splash”: not found
run-parts: /etc/kernel/postinst.d/zz-update-grub exited with return code 127
Failed to process /etc/kernel/postinst.d at /var/lib/dpkg/info/linux-image-3.2.0-26-generic.postinst line 1010.
dpkg: error processing linux-image-3.2.0-26-generic (--configure):
 subprocess installed post-installation script returned error exit status 2
No apport report written because MaxReports is reached already
                                                              dpkg: dependency problems prevent configuration of linux-image-generic:
 linux-image-generic depends on linux-image-3.2.0-26-generic; however:
  Package linux-image-3.2.0-26-generic is not configured yet.
dpkg: error processing linux-image-generic (--configure):
 dependency problems - leaving unconfigured
dpkg: dependency problems prevent configuration of linux-generic:
 linux-generic depends on linux-image-generic (= 3.2.0.26.28); however:
  Package linux-image-generic is not configured yet.
dpkg: error processing linux-generic (--configure):
 dependency problems - leaving unconfiguredNo apport report written because MaxReports is reached already
                         No apport report written because MaxReports is reached already

Errors were encountered while processing:
 linux-image-3.2.0-26-generic
 linux-image-generic
 linux-generic
E: Sub-process /usr/bin/dpkg returned an error code (1)