我的启动过程正常吗？开机需要50秒

Question

我的启动过程正常吗？开机需要50秒

这是我的 boot.log

resume: libgcrypt version: 1.5.0
fsck from util-linux 2.19.1
fsck from util-linux 2.19.1
fsck from util-linux 2.19.1
/dev/sda5: clean, 668102/3276800 files, 4449436/13107200 blocks
/dev/sda2: recovering journal
uhome: recovering journal
/dev/sda2: clean, 3030/74592 files, 200601/297200 blocks (check in 2 mounts)
uhome: clean, 282203/2621440 files, 8705593/10485760 blocks (check after next mount)
Skipping profile in /etc/apparmor.d/disable: usr.bin.firefox
 * Starting AppArmor profiles       [170G 
[164G[ OK ]
 * Setting sensors limits       [170G 
[164G[ OK ]
Invalidating stale software suspend images... done.
 * Starting mDNS/DNS-SD daemon[164G[ OK ]
Starting DECnet... * Starting network connection manager[164G[ OK ]
done.
 * Stopping Failsafe Boot Delay[164G[ OK ]
 * Stopping System V initialisation compatibility[164G[ OK ]
 * Starting System V runlevel compatibility[164G[ OK ]
 * Starting Bumblebee supporting nVidia Optimus cards[164G[ OK ]
 * Starting LightDM Display Manager[164G[ OK ]
 * Starting save kernel messages[164G[ OK ]
 * Starting ACPI daemon[164G[ OK ]
 * Starting anac(h)ronistic cron[164G[ OK ]
 * Starting deferred execution scheduler[164G[ OK ]
 * Starting regular background program processing daemon[164G[ OK ]
 * Starting automatic crash report generation[164G[[31mfail[39;49m]
 * Stopping anac(h)ronistic cron[164G[ OK ]
 * Starting CPU interrupts balancing daemon[164G[ OK ]

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fstab 的内容：

# /etc/fstab: static file system information.
#
# Use 'blkid -o value -s UUID' to print the universally unique identifier
# for a device; this may be used with UUID= as a more robust way to name
# devices that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
proc            /proc           proc    nodev,noexec,nosuid 0       0
# / was on /dev/sda5 during installation
UUID=d30f09f8-9580-4a6b-ac31-f69116793f9f /               ext4    errors=remount-ro 0       1
# /boot was on /dev/sda2 during installation
UUID=28309a48-2171-4784-8093-d0e5ca40e6de /boot           ext4    defaults        0       2
# /home was on /dev/sda6 during installation
UUID=4d7ee3e9-bf26-483d-af6e-efcd883126d0 /home           ext4    defaults        0       2
# swap was on /dev/sda10 during installation
UUID=f1a123f0-c81d-4f0a-9d5c-6780cbf8b9dc none            swap    sw              0       0

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这是 dmesg 日志：http : //paste.ubuntu.com/826319/ '

dmesg 日志在 6 秒后显示出相当大的波动，在第 24 秒再次开始之前等待太多。

输出fdisk -l和mount：http://paste.ubuntu.com/826397/

我已经禁用了几乎所有可以使用的服务，但启动仍然需要 50 秒。使用 Live USB 启动时，几乎不需要 25 秒。

引导过程在“resume libcrypt version”行停止约 20 秒。这些 fscks 在每次启动时执行。那些 fsck 是必要的吗？

编辑：引导图