我有一台台式机，它有 4.5 Ghz 6 核处理器、16GB RAM 和 SSD。它是 Windows 10 和 Ubuntu 14.04 之间的双启动。它启动 Windows 10 大约需要 8 到 10 秒，而启动 Ubuntu 则需要 3.5 分钟以上。当我运行 时dmesg，我可以看到一个名为 的进程sanitized_helper需要将近 100 秒才能加载 (?)。然后，蓝牙：RFCOMM v.1.11 需要 110 秒才能加载。
首先，什么是“sanitized_helper”？至于蓝牙，当然，我可以在启动时禁用蓝牙，但为什么要花那么长时间呢？
完整的输出如下dmesg：http://paste.ubuntu.com/15344458/
编辑：按照 Jeremy31 的建议，我启动 Windows 10，然后使用 关闭shutdown -h并重新运行dmesg。Ubuntu 现在大约需要一分半钟才能启动，这仍然是一个很长的时间，但它取得了进展！以下是以dmesg这种方式关闭后的完整输出：http://paste.ubuntu.com/15344524/
以下是 的内容/etc/fstab：
# /etc/fstab: static file system information.
#
# Use 'blkid' 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>
# / was on /dev/sda5 during installation
UUID=0b569c46-6cc7-4453-a9ac-7b1828cb202b / ext4 errors=remount-ro 0 1
# /boot/efi was on /dev/sda2 during installation
UUID=AAA6-1955 /boot/efi vfat defaults 0 1
# swap was on /dev/sda6 during installation
UUID=e46d8b08-ea89-4045-8737-e977888b12f5 none swap sw 0 0
下面是输出sudo blkid：
/dev/sda1: LABEL="Recovery" UUID="2480A41480A3EA8E" TYPE="ntfs" PARTLABEL="Basic data partition" PARTUUID="8b6f744e-e767-4348-a14e-0a23726cea33"
/dev/sda2: UUID="AAA6-1955" TYPE="vfat" PARTLABEL="EFI system partition" PARTUUID="676ee6a5-5b9c-4566-b13e-026ccc5deb1c"
/dev/sda3: PARTLABEL="Microsoft reserved partition" PARTUUID="b36a3fce-16dd-4b30-9756-16266ffb1c8b"
/dev/sda4: UUID="0848B0D943211234" TYPE="ntfs" PARTLABEL="Basic data partition" PARTUUID="01a32f3e-31d7-4429-b80e-b538d7b53cd4"
/dev/sda5: UUID="0b569c46-6cc7-4453-a9ac-7b1828cb202b" TYPE="ext4" PARTUUID="a0d08d18-d9db-4e68-afe8-e5bac0bd8755"
/dev/sdb1: PARTLABEL="Microsoft reserved partition" PARTUUID="8f2b6a8e-c0bd-447a-9f41-390249d4866b"
/dev/sdb2: LABEL="2TB Seagate" UUID="2698A69B98A668CF" TYPE="ntfs" PARTLABEL="Basic data partition" PARTUUID="3399edd9-593b-41e6-8bf2-e82f0166da70"