我刚刚安装完 Ubuntu 14.04，一切都很顺利，直到网络开始断断续续。在过去三天里，我检查了路由器（Windows 机器没有问题）、网卡以及几乎所有其他我可以排除的问题。然后我发现 8 个月前的更新中有一个错误，导致网络管理器崩溃。
经过进一步研究，我确认我的卡可以正常工作，系统可以看到卡，并且连接设置正确且稳定。我还可以在系统日志中看到网络管理器已关闭，当连接丢失时，如果我在命令行手动执行此操作，我可以立即重新启动它，但它不会自行重新启动。
我碰到的几个页面都说导致管理器崩溃的错误已经解决并发布，但我遇到了几乎相同的问题。
是否有人知道导致管理器崩溃的错误是否已修复或是否仍会导致问题？
这是一个漫长而艰难的安装过程，我只想把最后一颗钉子钉在棺材上。其他一切都很好。
答案1
今天连接再次断开时，我从系统日志中发现了这一点。我不知道这是否有用。我有一些使用 Linux 的经验，但我是从 Windows 环境转移过来的，所以很多这方面的问题对我来说很陌生。
01/16/17 09:53:11 AM studionBitch NetworkManager[920] <info> caught signal 15, shutting down normally.
01/16/17 09:53:11 AM studionBitch NetworkManager[920] <info> (eth0): device state change: activated -> unmanaged (reason 'removed') [100 10 36]
01/16/17 09:53:11 AM studionBitch NetworkManager[920] <info> (eth0): deactivating device (reason 'removed') [36]
01/16/17 09:53:11 AM studionBitch NetworkManager[920] <info> (eth0): canceled DHCP transaction, DHCP client pid 1662
01/16/17 09:53:11 AM studionBitch avahi-daemon[706] Withdrawing address record for 10.0.0.143 on eth0.
01/16/17 09:53:11 AM studionBitch avahi-daemon[706] Leaving mDNS multicast group on interface eth0.IPv4 with address 10.0.0.143.
01/16/17 09:53:11 AM studionBitch avahi-daemon[706] Interface eth0.IPv4 no longer relevant for mDNS.
01/16/17 09:53:11 AM studionBitch NetworkManager[920] <warn> DNS: plugin dnsmasq update failed
01/16/17 09:53:11 AM studionBitch NetworkManager[920] <info> Removing DNS information from /sbin/resolvconf
01/16/17 09:53:11 AM studionBitch dnsmasq[1668] setting upstream servers from DBus
01/16/17 09:53:11 AM studionBitch NetworkManager[920] <info> (eth0): cleaning up...
01/16/17 09:53:11 AM studionBitch NetworkManager[920] <info> (eth0): taking down device.
01/16/17 09:53:11 AM studionBitch avahi-daemon[706] Interface eth0.IPv6 no longer relevant for mDNS.
01/16/17 09:53:11 AM studionBitch avahi-daemon[706] Leaving mDNS multicast group on interface eth0.IPv6 with address 2601:445:4101:3bab:3cb5:9f3a:bd76:2edf.
01/16/17 09:53:11 AM studionBitch avahi-daemon[706] Withdrawing address record for 2601:445:4101:3bab:feaa:14ff:fe93:38c5 on eth0.
01/16/17 09:53:11 AM studionBitch avahi-daemon[706] Withdrawing address record for 2601:445:4101:3bab:3cb5:9f3a:bd76:2edf on eth0.
01/16/17 09:53:11 AM studionBitch NetworkManager[920] <info> Unmanaged Device found; state CONNECTED forced. (see http://bugs.launchpad.net/bugs/191889)
01/16/17 09:53:11 AM studionBitch dbus[510] [system] Activating service name='org.freedesktop.nm_dispatcher' (using servicehelper)
01/16/17 09:53:11 AM studionBitch NetworkManager[920] <info> Removing DNS information from /sbin/resolvconf
01/16/17 09:53:11 AM studionBitch dnsmasq[1668] exiting on receipt of SIGTERM
01/16/17 09:53:11 AM studionBitch NetworkManager[920] <info> exiting (success)
01/16/17 09:53:11 AM studionBitch dbus[510] [system] Successfully activated service 'org.freedesktop.nm_dispatcher'
01/16/17 09:53:11 AM studionBitch NetworkManager[11906] <info> NetworkManager (version 0.9.8.8) is starting...
01/16/17 09:53:11 AM studionBitch NetworkManager[11906] <info> Read config file /etc/NetworkManager/NetworkManager.conf
01/16/17 09:53:11 AM studionBitch NetworkManager[11906] <info> WEXT support is enabled
01/16/17 09:53:11 AM studionBitch NetworkManager[11906] <info> VPN: loaded org.freedesktop.NetworkManager.pptp
01/16/17 09:53:11 AM studionBitch NetworkManager[11906] <info> DNS: loaded plugin dnsmasq
01/16/17 09:53:11 AM studionBitch NetworkManager[11906] SCPlugin-Ifupdown: init!
01/16/17 09:53:11 AM studionBitch NetworkManager[11906] SCPlugin-Ifupdown: update_system_hostname
01/16/17 09:53:11 AM studionBitch NetworkManager[11906] interface-parser: parsing file /etc/network/interfaces
01/16/17 09:53:11 AM studionBitch NetworkManager[11906] interface-parser: finished parsing file /etc/network/interfaces
01/16/17 09:53:11 AM studionBitch NetworkManager[11906] SCPluginIfupdown: management mode: unmanaged
01/16/17 09:53:11 AM studionBitch NetworkManager[11906] SCPlugin-Ifupdown: devices added (path: /sys/devices/pci0000:00/0000:00:09.0/0000:03:00.0/net/eth0, iface: eth0)
01/16/17 09:53:11 AM studionBitch NetworkManager[11906] SCPlugin-Ifupdown: device added (path: /sys/devices/pci0000:00/0000:00:09.0/0000:03:00.0/net/eth0, iface: eth0): no ifupdown configuration found.
01/16/17 09:53:11 AM studionBitch NetworkManager[11906] SCPlugin-Ifupdown: devices added (path: /sys/devices/virtual/net/lo, iface: lo)
01/16/17 09:53:11 AM studionBitch NetworkManager[11906] SCPlugin-Ifupdown: device added (path: /sys/devices/virtual/net/lo, iface: lo): no ifupdown configuration found.
01/16/17 09:53:11 AM studionBitch NetworkManager[11906] SCPlugin-Ifupdown: end _init.
01/16/17 09:53:11 AM studionBitch NetworkManager[11906] <info> Loaded plugin ifupdown: (C) 2008 Canonical Ltd. To report bugs please use the NetworkManager mailing list.
01/16/17 09:53:11 AM studionBitch NetworkManager[11906] <info> Loaded plugin keyfile: (c) 2007 - 2010 Red Hat, Inc. To report bugs please use the NetworkManager mailing list.
01/16/17 09:53:11 AM studionBitch NetworkManager[11906] SCPlugin-Ofono: Acquired D-Bus service com.canonical.NMOfono
01/16/17 09:53:11 AM studionBitch NetworkManager[11906] SCPlugin-Ofono: init!
我还从一个名为 whoopsie[1207] 的进程中获得了一些东西，它只是简单地声明离线。
我也刚刚从内核得到了这个。
01/16/17 09:56:03 AM studionBitch kernel [37507.526431] ------------[ cut here ]------------
01/16/17 09:56:03 AM studionBitch kernel [37507.526445] WARNING: CPU: 0 PID: 3 at /build/linux-jxap_Z/linux-3.13.0/net/sched/sch_generic.c:264 dev_watchdog+0x276/0x280()
01/16/17 09:56:03 AM studionBitch kernel [37507.526450] NETDEV WATCHDOG: eth0 (r8169): transmit queue 0 timed out
01/16/17 09:56:03 AM studionBitch kernel [37507.526453] Modules linked in: snd_seq_dummy pci_stub vboxpci(OX) vboxnetadp(OX) vboxnetflt(OX) vboxdrv(OX) cuse dm_crypt joydev snd_hda_codec_hdmi hid_holtek_kbd kvm_amd kvm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_hda_codec_realtek uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core snd_usb_audio videodev snd_usbmidi_lib snd_hda_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd snd_hda_codec snd_seq_midi snd_seq_midi_event snd_hwdep snd_rawmidi rfcomm snd_pcm bnep bluetooth snd_seq serio_raw k10temp fam15h_power edac_core edac_mce_amd snd_page_alloc fglrx(POX) i2c_piix4 snd_seq_device snd_timer binfmt_misc snd amd_iommu_v2 soundcore shpchp parport_pc ppdev mac_hid lp parport pata_acpi hid_generic psmouse usbhid usb_storage hid ahci r8169 pata_atiixp libahci mii
01/16/17 09:56:03 AM studionBitch kernel [37507.526543] CPU: 0 PID: 3 Comm: ksoftirqd/0 Tainted: P OX 3.13.0-107-lowlatency #154-Ubuntu
01/16/17 09:56:03 AM studionBitch kernel [37507.526547] Hardware name: Gigabyte Technology Co., Ltd. To be filled by O.E.M./970A-UD3P, BIOS FA 10/28/2014
01/16/17 09:56:03 AM studionBitch kernel [37507.526551] 0000000000000000 ffff8802331a1c88 ffffffff81731833 ffff8802331a1cd0
01/16/17 09:56:03 AM studionBitch kernel [37507.526558] 0000000000000009 ffff8802331a1cc0 ffffffff8106b97d 0000000000000000
01/16/17 09:56:03 AM studionBitch kernel [37507.526564] ffff88022d6a8000 ffff88022d8d6e80 0000000000000001 0000000000000000
01/16/17 09:56:03 AM studionBitch kernel [37507.526571] Call Trace:
01/16/17 09:56:03 AM studionBitch kernel [37507.526580] [<ffffffff81731833>] dump_stack+0x64/0x82
01/16/17 09:56:03 AM studionBitch kernel [37507.526588] [<ffffffff8106b97d>] warn_slowpath_common+0x7d/0xa0
01/16/17 09:56:03 AM studionBitch kernel [37507.526594] [<ffffffff8106b9ec>] warn_slowpath_fmt+0x4c/0x50
01/16/17 09:56:03 AM studionBitch kernel [37507.526601] [<ffffffff810a7934>] ? update_curr+0xe4/0x1b0
01/16/17 09:56:03 AM studionBitch kernel [37507.526610] [<ffffffff81654926>] dev_watchdog+0x276/0x280
01/16/17 09:56:03 AM studionBitch kernel [37507.526617] [<ffffffff816546b0>] ? dev_graft_qdisc+0x80/0x80
01/16/17 09:56:03 AM studionBitch kernel [37507.526623] [<ffffffff81078a06>] call_timer_fn+0x36/0x180
01/16/17 09:56:03 AM studionBitch kernel [37507.526629] [<ffffffff816546b0>] ? dev_graft_qdisc+0x80/0x80
01/16/17 09:56:03 AM studionBitch kernel [37507.526635] [<ffffffff81078fdc>] run_timer_softirq+0x22c/0x2e0
01/16/17 09:56:03 AM studionBitch kernel [37507.526642] [<ffffffff81070f7c>] __do_softirq+0xfc/0x350
01/16/17 09:56:03 AM studionBitch kernel [37507.526649] [<ffffffff81071200>] run_ksoftirqd+0x30/0x70
01/16/17 09:56:03 AM studionBitch kernel [37507.526655] [<ffffffff81096da9>] smpboot_thread_fn+0x159/0x260
01/16/17 09:56:03 AM studionBitch kernel [37507.526660] [<ffffffff81735409>] ? schedule+0x29/0x70
01/16/17 09:56:03 AM studionBitch kernel [37507.526665] [<ffffffff81096c50>] ? SyS_setgroups+0x180/0x180
01/16/17 09:56:03 AM studionBitch kernel [37507.526671] [<ffffffff8108f8b9>] kthread+0xc9/0xe0
01/16/17 09:56:03 AM studionBitch kernel [37507.526682] [<ffffffff8108f7f0>] ? kthread_create_on_node+0x1c0/0x1c0
01/16/17 09:56:03 AM studionBitch kernel [37507.526684] [<ffffffff81740ba8>] ret_from_fork+0x58/0x90
01/16/17 09:56:03 AM studionBitch kernel [37507.526686] [<ffffffff8108f7f0>] ? kthread_create_on_node+0x1c0/0x1c0
01/16/17 09:56:03 AM studionBitch kernel [37507.526688] ---[ end trace 36eb59f55c077491 ]---
01/16/17 09:56:03 AM studionBitch kernel [37507.531429] r8169 0000:03:00.0 eth0: link up
01/16/17 09:57:03 AM studionBitch dbus[510] [system] Activating service name='org.freedesktop.hostname1' (using servicehelper)
01/16/17 09:57:03 AM studionBitch kernel [37567.951413] systemd-hostnamed[12395]: Warning: nss-myhostname is not installed. Changing the local hostname might make it unresolveable. Please install nss-myhostname!
01/16/17 09:57:03 AM studionBitch dbus[510] [system] Successfully activated service 'org.freedesktop.hostname1'
01/16/17 10:06:09 AM studionBitch kernel [38113.056925] r8169 0000:03:00.0 eth0: link up
01/16/17 10:06:09 AM studionBitch whoopsie[1207] offline
01/16/17 10:06:09 AM studionBitch whoopsie[1207] online
01/16/17 10:16:15 AM studionBitch kernel [38718.582492] r8169 0000:03:00.0 eth0: link up
01/16/17 10:16:15 AM studionBitch whoopsie[1207] offline
01/16/17 10:16:15 AM studionBitch whoopsie[1207] online
01/16/17 10:17:01 AM studionBitch CRON[13202] (root) CMD ( cd / && run-parts --report /etc/cron.hourly)
任何帮助贯穿这一切的帮助都会有帮助。