$ free
             total       used       free     shared    buffers     cached
Mem:       1018028     463460     554568          0      47996     222304
-/+ buffers/cache:     193160     824868
Swap:       393552          0     393552
$ sudo parted /dev/sdb print
モデル: ATA ASUS-PHISON SSD (scsi)
ディスク /dev/sdb: 8070MB
セクタサイズ (論理/物理): 512B/512B
パーティションテーブル: msdos

番号  開始    終了    サイズ  タイプ    ファイルシステム  フラグ
 1    32.3kB  7666MB  7666MB  primary   ext4              boot
 2    7666MB  8069MB  403MB   extended
 5    7666MB  8069MB  403MB   logical   linux-swap(v1)

$ dpkg -l uswsusp
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Inst/Cfg-files/Unpacked/Failed-cfg/Half-inst/trig-aWait/Trig-pend
|/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
||/ 名前                バージョン       説明
+++-=====================-=====================-==========================================================
ii  uswsusp               0.8-1.1ubuntu3        tools to use userspace software suspend provided by Linux
$ cat /etc/pm/config.d/00sleep_module

# The sleep/wake system to use.  Valid values are:
#   kernel    The built-in kernel suspend/resume support.
#             Use this if nothing else is supported on your system.
#   uswsusp   If your system has support for the userspace
#             suspend programs (s2ram/s2disk/s2both), then use this.
#   tuxonice  If your system has support for tuxonice, use this.
#
# The system defaults to "kernel" if this is commented out.
SLEEP_MODULE="uswsusp"