Ubuntu 12.04 で再起動ができない場合

** 再起動できない問題を修正
シャットダウンはできるけど、再起動するとそのまま暗黒画面になってしまう
点を修正する
*** 変更点
sudo cp /etc/default/grub /etc/default/grub.orig
sudo emacs -nw /etc/default/grub
===
*** /etc/default/grub.orig 2013-08-25 03:25:42.802338004 +0100
--- /etc/default/grub 2013-08-25 03:27:40.111062811 +0100
***************
*** 9,15 ****
GRUB_TIMEOUT=10
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
! GRUB_CMDLINE_LINUX=""

# Uncomment to enable BadRAM filtering, modify to suit your needs
# This works with Linux (no patch required) and with any kernel that obtains
--- 9,15 ----
GRUB_TIMEOUT=10
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
! GRUB_CMDLINE_LINUX="reboot=pci"

# Uncomment to enable BadRAM filtering, modify to suit your needs
# This works with Linux (no patch required) and with any kernel that obtains
===
gksudo update-grub

*** ref

[[http://www.jisakuroom.net/blog/archives/314][Ubuntuが再起動出来ない問題を解決する方法]]

* 環境
===
~ $ uname -a
Linux D257-A71C 3.2.0-52-generic #78-Ubuntu SMP Fri Jul 26 16:23:24 UTC 2013 i686 i686 i386 GNU/Linux
~ $ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 12.04.3 LTS
Release: 12.04
Codename: precise
~ $ emacs --version
GNU Emacs 24.3.1
Copyright (C) 2013 Free Software Foundation, Inc.
GNU Emacs comes with ABSOLUTELY NO WARRANTY.
You may redistribute copies of Emacs
under the terms of the GNU General Public License.
For more information about these matters, see the file named COPYING.
~ $ ratpoison -v
ratpoison 1.4.6 (built Aug 27 2013 19:09:05)
Copyright (C) 2000-2008 Shawn Betts