求大神指点Ubuntu16.04电脑能够链接WiFi，但是火狐浏览器却打不开网页

[Micker Hao]

1 网页显示找不到服务器
2 ping www.baidu.com 显示ping:unknown host www.baidu.com
3 wifi链接信息 ipv4
IP地址 192.168.0.104
广播地址 192.168.0.255
子网掩码 255.255.255.0
默认路由 192.168.0.1
用的是邻居家的WiFi
4 用有线宽带也是如此

[vickycq]

执行以下指令将结果全部复制贴上来

代码： 全选

uname -a
cat /etc/issue
sudo lshw -numeric -C net
sudo ls -l /etc/resolv.conf
sudo cat /etc/resolv.conf
sudo cat /etc/NetworkManager/NetworkManager.conf
dpkg -l | grep 'dnsmasq\|resolv'
ping -c3 114.114.114.114
ping -c3 www.sohu.com

[Micker Hao]

mickerhao@mickerhao-Da-Mai-III:~$ uname -a
Linux mickerhao-Da-Mai-III 4.10.0-28-generic #32~16.04.2-Ubuntu SMP Thu Jul 20 10:19:48 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
mickerhao@mickerhao-Da-Mai-III:~$ cat /ect/issue
cat: /ect/issue: 没有那个文件或目录
mickerhao@mickerhao-Da-Mai-III:~$ sudo lshw -numeric -C net
[sudo] mickerhao 的密码：
*-network
description: Wireless interface
product: Wireless 3160 [8086:8B3]
vendor: Intel Corporation [8086]
physical id: 0
bus info: pci@0000:02:00.0
logical name: wlp2s0
version: 83
serial: 00:1e:64:d2:02:c1
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi driverversion=4.10.0-28-generic firmware=17.459231.0 ip=192.168.0.104 latency=0 link=yes multicast=yes wireless=IEEE 802.11
resources: irq:50 memory:e2200000-e2201fff
*-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10EC:8168]
vendor: Realtek Semiconductor Co., Ltd. [10EC]
physical id: 0
bus info: pci@0000:03:00.0
logical name: enp3s0
version: 0c
serial: 543a:5d:05:19
size: 10Mbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8168g-2_0.0.1 02/06/13 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
resources: irq:45 ioport:4000(size=256) memory:e2100000-e2100fff memory:e2000000-e2003fff
mickerhao@mickerhao-Da-Mai-III:~$ sudo ls -l /etc/resolv.conf
lrwxrwxrwx 1 root root 29 8月 22 08:47 /etc/resolv.conf -> ../run/resolvconf/resolv.conf
mickerhao@mickerhao-Da-Mai-III:~$ sudo cat /etc/resolv.conf
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 127.0.1.1
mickerhao@mickerhao-Da-Mai-III:~$ sudo cat /etc/NetworkManager/NetworkManager.conf
[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq

[ifupdown]
managed=false
mickerhao@mickerhao-Da-Mai-III:~$ dpkg -l | grep 'dnsmasq\|resolv'
ii dnsmasq-base 2.75-1ubuntu0.16.04.2 amd64 Small caching DNS proxy and DHCP/TFTP server
ii libgeoip1:amd64 1.6.9-1 amd64 non-DNS IP-to-country resolver library
ii resolvconf 1.78ubuntu4 all name server information handler
mickerhao@mickerhao-Da-Mai-III:~$ ping -c3 114.114.114.114
PING 114.114.114.114 (114.114.114.114) 56(84) bytes of data.
64 bytes from 114.114.114.114: icmp_seq=1 ttl=95 time=18.0 ms
64 bytes from 114.114.114.114: icmp_seq=2 ttl=87 time=17.0 ms
64 bytes from 114.114.114.114: icmp_seq=3 ttl=91 time=16.4 ms

--- 114.114.114.114 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 16.464/17.159/18.009/0.640 ms
mickerhao@mickerhao-Da-Mai-III:~$ ping -c3 www.sohu.com
PING fzz.a.sohu.com (61.158.246.131) 56(84) bytes of data.
64 bytes from 131.246.158.61.ha.cnc (61.158.246.131): icmp_seq=1 ttl=57 time=11.2 ms
64 bytes from 131.246.158.61.ha.cnc (61.158.246.131): icmp_seq=2 ttl=57 time=10.6 ms
64 bytes from 131.246.158.61.ha.cnc (61.158.246.131): icmp_seq=3 ttl=57 time=10.6 ms

--- fzz.a.sohu.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 10.623/10.861/11.262/0.297 ms
mickerhao@mickerhao-Da-Mai-III:~$
------------------------------------------------------------------------------------------------------------------------

就在我回复你刚刚，火狐浏览器莫名其妙的能够上百度，就如同今天凌晨上网正嗨之时，莫名其妙的找不到服务器，不知其中何故？还请大神解答疑惑。

[vickycq]

您可以尝试编辑 /etc/NetworkManager/NetworkManager.conf，在 dns=dnsmasq 这一行的开头加上 # 符号，将其注释掉。
然后，在 NetworkManager “编辑连接”的图形界面中选择 Automatic (DHCP) addresses only，然后填入固定的 DNS 服务器，例如 114.114.114.114，如下图所示



这样，当您重新启动计算机或重新启动 NetworkManager 后，您会发现 /etc/resolv.conf 变成了这样

代码： 全选

lu@lu-X455LD:~$ cat /etc/resolv.conf
# Generated by NetworkManager
nameserver 114.114.114.114

以上是猜测，不一定正确

[Micker Hao]

我没有权限更改，现在我正在为获得权限而绞尽脑汁
我按照这篇文章http://blog.csdn.net/sunxiaoju/article/details/51993091
试图获取root权限，就差最后一步，不知该怎么搞

[Micker Hao]

刚刚又莫名其妙的找不到服务器了

[vickycq]

我没有权限更改，现在我正在为获得权限而绞尽脑汁
我按照这篇文章http://blog.csdn.net/sunxiaoju/article/details/51993091
试图获取root权限，就差最后一步，不知该怎么搞

您不需要启用 root 用户。您只需使用 sudo 或 gksu (需安装) 命令启动文本编辑器编辑文件即可。例如使用 sudo nano /etc/NetworkManager/NetworkManager.conf，编辑后按 Ctrl-x，y，回车保存退出

[Micker Hao]

我用终端试图打开cat /etc/resolv.conf
却显示找不到文件目录

[vickycq]

我用终端试图打开cat /etc/resolv.conf却显示找不到文件目录

执行以下指令将结果全部复制贴上来

代码： 全选

sudo ls -l /etc/resolv.conf
sudo cat /etc/resolv.conf
sudo cat /var/run/NetworkManager/resolv.conf
sudo cat /etc/NetworkManager/NetworkManager.conf
dpkg -l | grep 'dnsmasq\|resolv'
ping -c3 114.114.114.114
ping -c3 www.sohu.com

请确认在 NetworkManager “编辑连接” 的图形界面中对您正在使用的连接选择了 Automatic (DHCP) addresses only，然后填入固定的 DNS 服务器，例如 114.114.114.114，如下图所示

[Micker Hao]

mickerhao@mickerhao-Da-Mai-III:~$ sudo ls -l /etc/resolv.conf
[sudo] mickerhao 的密码：
lrwxrwxrwx 1 root root 29 8月 22 08:47 /etc/resolv.conf -> ../run/resolvconf/resolv.conf
mickerhao@mickerhao-Da-Mai-III:~$ sudo cat /etc/resolv.conf
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 8.8.8.8
nameserver 8.8.4.4
mickerhao@mickerhao-Da-Mai-III:~$ sudo cat /var/run/NetworkManager/resolv.conf
# Generated by NetworkManager
nameserver 8.8.8.8
mickerhao@mickerhao-Da-Mai-III:~$ sudo cat /etc/NetworkManager/NetworkManager.conf
[main]
plugins=ifupdown,keyfile,ofono
#dns=dnsmasq

[ifupdown]
managed=false
mickerhao@mickerhao-Da-Mai-III:~$ dpkg -l | grep 'dnsmasq\|resolv'
ii dnsmasq-base 2.75-1ubuntu0.16.04.2 amd64 Small caching DNS proxy and DHCP/TFTP server
ii libgeoip1:amd64 1.6.9-1 amd64 non-DNS IP-to-country resolver library
ii resolvconf 1.78ubuntu4 all name server information handler
mickerhao@mickerhao-Da-Mai-III:~$ ping -c3 114.114.114.114
PING 114.114.114.114 (114.114.114.114) 56(84) bytes of data.
64 bytes from 114.114.114.114: icmp_seq=1 ttl=75 time=192 ms
64 bytes from 114.114.114.114: icmp_seq=2 ttl=83 time=25.1 ms
64 bytes from 114.114.114.114: icmp_seq=3 ttl=72 time=259 ms

--- 114.114.114.114 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 25.114/159.009/259.345/98.524 ms
mickerhao@mickerhao-Da-Mai-III:~$ ping -c3 www.sohu.com
PING fzz.a.sohu.com (61.158.246.131) 56(84) bytes of data.
64 bytes from 131.246.158.61.ha.cnc (61.158.246.131): icmp_seq=1 ttl=57 time=20.0 ms
64 bytes from 131.246.158.61.ha.cnc (61.158.246.131): icmp_seq=2 ttl=57 time=10.7 ms
64 bytes from 131.246.158.61.ha.cnc (61.158.246.131): icmp_seq=3 ttl=57 time=107 ms

--- fzz.a.sohu.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2003ms
rtt min/avg/max/mdev = 10.729/46.241/107.978/43.818 ms
mickerhao@mickerhao-Da-Mai-III:~$

[vickycq]

现在还有问题吗？
可以把 DNS 换成国内的

[Micker Hao]

没问题啦，但是翻墙工具却打不开网页啦，为什麽？我用的是shadowsocks-qt5 翻墙的

[vickycq]

没问题啦，但是翻墙工具却打不开网页啦，为什麽？我用的是shadowsocks-qt5 翻墙的

用手机客户端连接试试，看问题出在哪个环节。

[Micker Hao]

我手机怀了

[Micker Hao]

我用翻墙工具试图打开google，但网页一直是空白页，左下角一直显示等待www.google.com或正在与google握手，长时间都是空白，没有任何显示