直接开机进linux或是重启机器或是因为掉线重起的， 无线刚开始都是好好的，用一会就是断网，但是系统上的无线连接图标并没有显示断，，你有时注销一下，再重进系统无线也是能用一会，还是会掉线。如果你有路由器的话，你可以在终端中ping 你的路由器地址，连接状态好的时候是可以ping的，在连接状态不通的时候是ping不通的，但系统的无线网络连接图标是显示的连接正常的。 这应该是网络阻塞，，你可以等个一分钟、两分钟，就会自动又连接通了。 或者你在终端，ping xxxxxxxxxx,,,,,某个域名或地址，等ping通了也就连通，不过一会还是会掉线的。 ，就是这个状况。。 你可以搜搜，linux 无线网卡掉线 一大堆问题，都是这个情况。 网上也有很多解决办法，有的可以，有的不适合自己的情况，最根本的解决办法就是安装对应的驱动程序。
在 2013年11月14日上午10:20，Dispensable <sunsetm...@gmail.com>写道： > 问题是从双系统的win切换到linux之后就好了，一点问题都没有了。。。这怎么看都不像是驱动的问题吧。。。 > 哪有一个驱动这会儿不能用等到去win下“预热”下才能用的？ > > > 在 2013年11月14日上午10:17，Wape Yang <wapey...@gmail.com>写道： > > > 无线网卡驱动问题，查看你无线网卡的型号，去找网卡驱动吧。 > > 先去无线网卡驱动的官方找找，有合适的就手动编译安装 > > 没有或者没有合适的，就降低linux 内核版本再安装官方的驱动，官方的驱动一般对于高版本的linux内核支持都不到位。 > > 或者在你使用的这个linux发行版中有没有与之对应的无线网卡型号驱动。 > > > > > > 2013/11/14 dispensable <sunsetm...@gmail.com> > > > > > | #问题表现| > > > > > > 1）连接win7虚拟的路由均没有问题； > > > 2）在图书馆连接公共wifi不能保持连接，一段时间后网络无法联通，但 > > > Networkmanager显示连接没有断开，只是没有网。此 时重新连接该wifi 问题解 > > > 决，但几分钟后问题重现； > > > 3）在图书馆使用win7和移动设备连接网络没有问题； > > > 4）本机双系统在重启到win7后再重启到linux时，以上2问题消失。但关机再启动 > > > 到linux时问题再现。 > > > > > > | #尝试解决| > > > > > > 1）更换wicd，失败; > > > 2）更新网卡驱动，已经最新； > > > 3）关闭dnsmaqs服务，失败。 > > > > > > | #系统日志分析| > > > > > > $tac /var/log/syslog | less > > > > > > �D�D�D�D�D�D�D�D�D�D�D重新连接wifi �D�D�D�D�D�D�D�D�D�D�D�D�D�D- > > > Nov 14 08:37:40 miracle dbus[3095]: [system] Successfully activated > > > service ‘org.freedesktop.nm_dispatcher’ > > > Nov 14 08:37:40 miracle dbus[3095]: [system] Activating service > > > name=’org.freedesktop.nm_dispatcher’ (using servicehelper) > > > Nov 14 08:37:40 miracle NetworkManager[3218]: nameserver > > > ‘61.128.192.68’ > > > Nov 14 08:37:40 miracle NetworkManager[3218]: nameserver > > > ‘61.128.128.68’ > > > Nov 14 08:37:40 miracle NetworkManager[3218]: gateway 222.176.232.1 > > > Nov 14 08:37:40 miracle NetworkManager[3218]: prefix 21 > > (255.255.248.0) > > > Nov 14 08:37:40 miracle NetworkManager[3218]: address > 222.176.234.83 > > > Nov 14 08:37:40 miracle NetworkManager[3218]: (wlan0): DHCPv4 state > > > changed bound -> renew > > > Nov 14 08:37:40 miracle dhclient: bound to 222.176.234.83 �D renewal > > > in 112 seconds. > > > Nov 14 08:37:40 miracle dhclient: DHCPACK from 222.176.232.1 > > > Nov 14 08:37:40 miracle dhclient: DHCPREQUEST on wlan0 to > > > 222.176.232.1 port 67 > > > Nov 14 08:37:29 miracle dbus[3095]: [system] Successfully activated > > > service ‘org.freedesktop.PackageKit’ > > > Nov 14 08:37:26 miracle dbus[3095]: [system] Activating service > > > name=’org.freedesktop.PackageKit’ (using servicehelper) > > > Nov 14 08:36:24 miracle NetworkManager[3218]: Activation (wlan0) > > > Stage 4 of 5 (IPv6 Configure Timeout) complete. > > > Nov 14 08:36:24 miracle NetworkManager[3218]: Activation (wlan0) > > > Stage 4 of 5 (IPv6 Configure Timeout) started… > > > Nov 14 08:36:24 miracle NetworkManager[3218]: Activation (wlan0) > > > Stage 4 of 5 (IPv6 Configure Timeout) scheduled… > > > Nov 14 08:36:24 miracle NetworkManager[3218]: (wlan0): IP6 addrconf > > > timed out or failed. > > > Nov 14 08:36:19 miracle ntpd_intres[3601]: DNS > 2.debian.pool.ntp.org > > > -> 24.25.4.103 > > > Nov 14 08:36:15 miracle ntpd_intres[3601]: DNS > 0.debian.pool.ntp.org > > > -> 202.120.2.101 > > > Nov 14 08:36:07 miracle ntpd[3534]: peers refreshed > > > Nov 14 08:36:07 miracle ntpd[3534]: 202.112.29.82 interface > > > 172.20.41.207 -> (none) > > > Nov 14 08:36:07 miracle ntpd[3534]: 202.112.31.197 interface > > > 172.20.41.207 -> (none) > > > Nov 14 08:36:07 miracle ntpd[3534]: Deleting interface #5 wlan0, > > > 172.20.41.207#1: > > > �D�D�D�D�D�D�D�D�D�D�D-有网�D�D�D�D�D�D�D�D�D�D�D�D�D�D- > > > Nov 14 08:40:10 miracle dnsmasq-dhcp[3006]: no address range > > > available for DHCP request via wlan0 > > > Nov 14 08:40:05 miracle dnsmasq-dhcp[3006]: no address range > > > available for DHCP request via wlan0 > > > Nov 14 08:40:02 miracle dnsmasq-dhcp[3006]: no address range > > > available for DHCP request via wlan0 > > > Nov 14 08:40:01 miracle dnsmasq-dhcp[3006]: no address range > > > available for DHCP request via wlan0 > > > Nov 14 08:40:00 miracle dnsmasq-dhcp[3006]: no address range > > > available for DHCP request via wlan0 > > > Nov 14 08:39:59 miracle dnsmasq-dhcp[3006]: no address range > > > available for DHCP request via wlan0 > > > Nov 14 08:39:32 miracle dbus[3095]: [system] Successfully activated > > > service ‘org.freedesktop.nm_dispatcher’ > > > �D�D�D�D�D�D�D�D�D�D�D有网�D�D�D�D�D�D�D�D�D�D�D�D�D- > > > Nov 14 08:41:26 miracle dbus[3095]: [system] Successfully activated > > > service ‘org.freedesktop.nm_dispatcher’ > > > Nov 14 08:41:26 miracle dbus[3095]: [system] Activating service > > > name=’org.freedesktop.nm_dispatcher’ (using servicehelper) > > > Nov 14 08:41:25 miracle NetworkManager[3218]: nameserver > > > ‘61.128.192.68’ > > > Nov 14 08:41:25 miracle NetworkManager[3218]: nameserver > > > ‘61.128.128.68’ > > > Nov 14 08:41:25 miracle NetworkManager[3218]: gateway 222.176.232.1 > > > Nov 14 08:41:25 miracle NetworkManager[3218]: prefix 21 > > (255.255.248.0) > > > Nov 14 08:41:25 miracle NetworkManager[3218]: address > 222.176.234.83 > > > Nov 14 08:41:25 miracle NetworkManager[3218]: (wlan0): DHCPv4 state > > > changed renew -> renew > > > Nov 14 08:41:25 miracle dhclient: bound to 222.176.234.83 �D renewal > > > in 99 seconds. > > > Nov 14 08:41:25 miracle dhclient: DHCPACK from 222.176.232.1 > > > Nov 14 08:41:25 miracle dhclient: DHCPREQUEST on wlan0 to > > > 222.176.232.1 port 67 > > > Nov 14 08:40:10 miracle dnsmasq-dhcp[3006]: no address range > > > available for DHCP request via wlan0 > > > �D�D�D�D�D�D�D�D�D�D-Y�D�D�D�D�D�D�D�D�D�D�D�D > > > Nov 14 08:44:24 miracle dhclient: DHCPREQUEST on wlan0 to > > > 222.176.232.1 port 67 > > > Nov 14 08:44:11 miracle dhclient: DHCPREQUEST on wlan0 to > > > 222.176.232.1 port 67 > > > Nov 14 08:43:56 miracle dhclient: DHCPREQUEST on wlan0 to > > > 222.176.232.1 port 67 > > > Nov 14 08:43:42 miracle dhclient: DHCPREQUEST on wlan0 to > > > 222.176.232.1 port 67 > > > Nov 14 08:43:25 miracle dhclient: DHCPREQUEST on wlan0 to > > > 222.176.232.1 port 67 > > > Nov 14 08:43:12 miracle dhclient: DHCPREQUEST on wlan0 to > > > 222.176.232.1 port 67 > > > Nov 14 08:43:04 miracle dhclient: DHCPREQUEST on wlan0 to > > > 222.176.232.1 port 67 > > > �D�D�D�D�D�D�D�D�D�D-断网�D�D�D�D�D�D�D�D�D- > > > Nov 14 08:45:09 miracle dhclient: DHCPREQUEST on wlan0 to > > > 255.255.255.255 port 67 > > > Nov 14 08:44:56 miracle dhclient: DHCPREQUEST on wlan0 to > > > 255.255.255.255 port 67 > > > Nov 14 08:44:48 miracle dhclient: DHCPREQUEST on wlan0 to > > > 222.176.232.1 port 67 > > > Nov 14 08:44:39 miracle dhclient: DHCPREQUEST on wlan0 to > > > 222.176.232.1 port 67 > > > �D�D�D�D�D�D�D�D�D�D-N�D�D�D�D�D�D�D�D- > > > Nov 14 08:45:48 miracle dhclient: DHCPDISCOVER on wlan0 to > > > 255.255.255.255 port 67 interval 10 > > > Nov 14 08:45:40 miracle dhclient: DHCPDISCOVER on wlan0 to > > > 255.255.255.255 port 67 interval 8 > > > Nov 14 08:45:32 miracle dhclient: DHCPDISCOVER on wlan0 to > > > 255.255.255.255 port 67 interval 8 > > > Nov 14 08:45:26 miracle NetworkManager[3218]: (wlan0): DHCPv4 state > > > changed expire -> preinit > > > Nov 14 08:45:26 miracle dhclient: DHCPDISCOVER on wlan0 to > > > 255.255.255.255 port 67 interval 6 > > > Nov 14 08:45:26 miracle NetworkManager[3218]: (wlan0): DHCPv4 state > > > changed renew -> expire > > > �D�D�D�D�D�D�D�D�D-N�D�D�D�D�D�D�D- > > > Nov 14 08:46:06 miracle dhclient: DHCPDISCOVER on wlan0 to > > > 255.255.255.255 port 67 interval 18 > > > Nov 14 08:45:58 miracle dhclient: DHCPDISCOVER on wlan0 to > > > 255.255.255.255 port 67 interval 8 > > > *在一堆DHCPREQUEST后断 网。。。* > > > > > > *从win重启后查看日志(此时段内 网络连接没有问题)* > > > $watch -d -n 1 tac /var/log/syslog > > > Nov 14 09:55:10 miracle dnsmasq-dhcp[2999]: no address range available > > > for DHCP > > > request via wlan0 > > > Nov 14 09:55:02 miracle dnsmasq-dhcp[2999]: no address range available > > > for DHCP > > > request via wlan0 > > > Nov 14 09:54:54 miracle dbus[3148]: [system] Successfully activated > > > service ‘org > > > .freedesktop.nm_dispatcher’ > > > Nov 14 09:54:54 miracle dbus[3148]: [system] Activating service > > > name=’org.freede > > > sktop.nm_dispatcher’ (using servicehelper) > > > Nov 14 09:54:54 miracle NetworkManager[3194]: nameserver ‘61.128.192.68 > > > ‘ > > > Nov 14 09:54:54 miracle NetworkManager[3194]: nameserver ‘61.128.128.68 > > > ‘ > > > Nov 14 09:54:54 miracle NetworkManager[3194]: gateway 222.176.232.1 > > > Nov 14 09:54:54 miracle NetworkManager[3194]: prefix 21 (255.255.248.0) > > > Nov 14 09:54:54 miracle NetworkManager[3194]: address 222.176.238.100 > > > Nov 14 09:54:54 miracle NetworkManager[3194]: (wlan0): DHCPv4 state > chang > > > ed renew -> renew > > > Nov 14 09:54:54 miracle dhclient: bound to 222.176.238.100 �D renewal in > > > 102 sec > > > onds. > > > Nov 14 09:54:54 miracle dhclient: DHCPACK from 222.176.232.1 > > > Nov 14 09:54:54 miracle dhclient: DHCPREQUEST on wlan0 to 222.176.232.1 > > > port 67 > > > Nov 14 09:54:53 miracle dnsmasq-dhcp[2999]: no address range available > > > for DHCP > > > request via wlan0 > > > 。。。。重复dnsmasq-dhcp信息，之后回到日志开始处，此处*消失了 DHCPREQUEST* > > > > > > <#> > > > > > > > > > 系统运行环境 > > > > > > linux mint debian edition + xfce4 + networkmanager 0.9.8.4 > > > $ uname -a > > > Linux miracle 3.10-3-686-pae #1 SMP Debian 3.10.11-1 (2013-09-10) i686 > > > GNU/Linux > > > > > > *真的很奇怪的问题，哪位大神懂的给 分析下？先谢了。* > > > > > > -------------- 下一部分 -------------- > > > 一个HTML附件被移除... > > > URL: < > > > > > > https://lists.ubuntu.com/archives/ubuntu-zh/attachments/20131114/8a45339f/attachment.html > > > > > > > -- > > > ubuntu-zh mailing list > > > ubuntu-zh@lists.ubuntu.com > > > https://lists.ubuntu.com/mailman/listinfo/ubuntu-zh > > > > > -------------- 下一部分 -------------- > > 一个HTML附件被移除... > > URL: < > > > https://lists.ubuntu.com/archives/ubuntu-zh/attachments/20131114/18f675b8/attachment.html > > > > > > > -- > > ubuntu-zh mailing list > > ubuntu-zh@lists.ubuntu.com > > https://lists.ubuntu.com/mailman/listinfo/ubuntu-zh > > > > > > > -- > ------------发言完毕------------ > -------------- 下一部分 -------------- > 一个HTML附件被移除... > URL: < > https://lists.ubuntu.com/archives/ubuntu-zh/attachments/20131114/f8777ae3/attachment.html 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