Ubuntu 16.04启动时间超过5分钟

Question

我使用的是一台配备4 gb内存和2.2 GHz和UUNTU16.04处理器的惠普笔记本电脑。在使用windows 7之前，我格式化了整个硬盘并安装了Ubuntu。

它的启动速度很慢。它需要5-10分钟(不是所有的时间，有些时候，它启动非常快，不到一分钟)。我在int中安装的应用程序不多，我检查了启动应用程序，也没有什么。

下面是引导的系统日志：

May  2 00:24:11 purush systemd-logind[713]: System is powering down.
May  2 00:24:53 purush systemd-logind[646]: New seat seat0.
May  2 00:24:53 purush systemd-logind[646]: Watching system buttons on         /dev/input/event2 (Power Button)
May  2 00:24:53 purush systemd-logind[646]: Watching system buttons on /dev/input/event4 (Video Bus)
May  2 00:24:53 purush systemd-logind[646]: Watching system buttons on /dev/input/event0 (Power Button)
May  2 00:24:53 purush systemd-logind[646]: Watching system buttons on /dev/input/event1 (Lid Switch)
May  2 00:24:53 purush systemd-logind[646]: Watching system buttons on /dev/input/event11 (HP WMI hotkeys)
May  2 00:24:57 purush lightdm: PAM unable to dlopen(pam_kwallet.so): /lib/security/pam_kwallet.so: cannot open shared object file: No such file or directory
May  2 00:24:57 purush lightdm: PAM adding faulty module: pam_kwallet.so
May  2 00:24:57 purush lightdm: PAM unable to dlopen(pam_kwallet5.so): /lib/security/pam_kwallet5.so: cannot open shared object file: No such file or directory
May  2 00:24:57 purush lightdm: PAM adding faulty module: pam_kwallet5.so
May  2 00:24:57 purush lightdm: pam_unix(lightdm-greeter:session): session opened for user lightdm by (uid=0)
May  2 00:24:57 purush systemd: pam_unix(systemd-user:session): session opened for user lightdm by (uid=0)
May  2 00:24:57 purush systemd-logind[646]: New session c1 of user lightdm.
May  2 00:24:59 purush lightdm: PAM unable to dlopen(pam_kwallet.so): /lib/security/pam_kwallet.so: cannot open shared object file: No such file or directory
May  2 00:24:59 purush lightdm: PAM adding faulty module: pam_kwallet.so
May  2 00:24:59 purush lightdm: PAM unable to dlopen(pam_kwallet5.so): /lib/security/pam_kwallet5.so: cannot open shared object file: No such file or directory
May  2 00:24:59 purush lightdm: PAM adding faulty module: pam_kwallet5.so
May  2 00:24:59 purush lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "purush"
May  2 00:28:57 purush pkexec[1117]: lightdm: The value for the SHELL variable was not found the /etc/shells file [USER=root] [TTY=unknown] [CWD=/var/lib/lightdm] [COMMAND=/usr/lib/unity-settings-daemon/usd-backlight-helper --set-brightness 76]
May  2 00:31:25 purush pkexec[1122]: lightdm: The value for the SHELL variable was not found the /etc/shells file [USER=root] [TTY=unknown] [CWD=/var/lib/lightdm] [COMMAND=/usr/lib/unity-settings-daemon/usd-backlight-helper --set-brightness 255]
May  2 00:31:33 purush lightdm: pam_unix(lightdm-greeter:session):     session closed for user lightdm
May  2 00:31:33 purush lightdm: pam_unix(lightdm:session): session     opened for user purush by (uid=0)
May  2 00:31:33 purush systemd: pam_unix(systemd-user:session):     session opened for user purush by (uid=0)
May  2 00:31:33 purush systemd-logind[646]: New session c2 of user purush.
May  2 00:31:38 purush gnome-keyring-daemon[1160]: The SSH agent was     already initialized
May  2 00:31:38 purush gnome-keyring-daemon[1160]: The PKCS#11     component was already initialized
May  2 00:31:38 purush gnome-keyring-daemon[1160]: The Secret Service was already initialized
May  2 00:31:38 purush polkitd(authority=local): Registered     Authentication Agent for unix-session:c2 (system bus name :1.110     [/usr/lib/policykit-1-gnome/polkit-gnome-authentication-agent-1], object     path /org/gnome/PolicyKit1/AuthenticationAgent, locale en_IN)
May  2 00:31:53 purush systemd-logind[646]: Removed session c1.

Answer 1

我也有这个问题，刚才解决了我的问题。显然，在/etc/fstab中有一个对交换分区的引用，因为我今天早些时候对它进行了格式化，所以在我的次要硬盘上不存在这个引用。从那时起，启动需要2-3分钟。在那之前的10秒钟内它就启动了。正如在这里提到的，大爆炸论坛

我在fstab文件sudo gedit /etc/fstab中注释掉了这个部分，并且它是固定的。