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16.04，網路停止工作

tag-icon • tag-icon networking 16.04
16.04，網路停止工作

烏班圖16.04。網路（有線或 Wi-Fi）在一段時間後停止運作。

這是我/var/log/syslog最後一次出現問題後的狀況

davide@brenna:~$ cat /var/log/syslog
Apr 29 09:30:23 brenna colord[1150]: (colord:1150): Cd-WARNING **: failed to get session [pid 4355]: Device o indirizzo non esistente
Apr 29 09:30:40 brenna anacron[896]: Job `cron.daily' terminated
Apr 29 09:30:40 brenna anacron[896]: Normal exit (1 job run)
Apr 29 09:32:28 brenna com.ubuntu.OneConf[1671]: WARNING:oneconf.hosts:Error in loading other_hosts file: [Errno 2] No such file or directory: '/home/davide/.cache/oneconf/3bdacd8fb8c349449cd523c9f50dfcb9/other_hosts'
Apr 29 09:36:46 brenna AptDaemon: INFO: Quitting due to inactivity
Apr 29 09:36:46 brenna AptDaemon: INFO: Quitting was requested
Apr 29 09:36:46 brenna org.debian.apt[943]: 09:36:46 AptDaemon [INFO]: Quitting due to inactivity
Apr 29 09:36:46 brenna org.debian.apt[943]: 09:36:46 AptDaemon [INFO]: Quitting was requested
Apr 29 09:40:15 brenna upowerd[1831]: (upowerd:1831): UPower-Linux-WARNING **: energy 44,400000 bigger than full 31,912500
Apr 29 09:40:23 brenna avahi-daemon[940]: Withdrawing address record for 192.168.0.216 on eth0.
Apr 29 09:40:23 brenna avahi-daemon[940]: Leaving mDNS multicast group on interface eth0.IPv4 with address 192.168.0.216.
Apr 29 09:40:23 brenna gnome-session[1803]: [2045:2151:0429/094023:ERROR:cloud_print_proxy_backend.cc(538)] Notifications for connector 9EEEB091-559D-9344-6BAC-C8DDB4835FE9 disabled.
Apr 29 09:40:23 brenna gnome-session[1803]: [2045:2151:0429/094023:ERROR:cloud_print_proxy_backend.cc(538)] Notifications for connector 9EEEB091-559D-9344-6BAC-C8DDB4835FE9 disabled.
Apr 29 09:40:23 brenna avahi-daemon[940]: Interface eth0.IPv4 no longer relevant for mDNS.
Apr 29 09:40:23 brenna systemd[1]: Starting Cleanup of Temporary Directories...
Apr 29 09:40:23 brenna systemd-tmpfiles[7098]: [/usr/lib/tmpfiles.d/var.conf:14] Duplicate line for path "/var/log", ignoring.
Apr 29 09:40:23 brenna systemd[1]: Started Cleanup of Temporary Directories.
Apr 29 09:40:23 brenna whoopsie[920]: [09:40:23] Cannot reach: https://daisy.ubuntu.com
Apr 29 09:40:23 brenna whoopsie[920]: [09:40:23] offline
Apr 29 09:40:24 brenna whoopsie[920]: [09:40:24] Cannot reach: https://daisy.ubuntu.com
Apr 29 09:41:23 brenna whoopsie[920]: [09:41:23] Cannot reach: https://daisy.ubuntu.com

拔下插頭並重新插入（或關閉 Wi-Fi 卡並重新啟用）可以解決問題，直到下次重新啟動為止（即網路在此之後無限期地工作，直到重新啟動為止）。

這非常煩人，特別是因為發生這種情況時沒有視覺輸出。它只是停止工作，當您嘗試提交線上請求（可能在論壇上寫帖子，或嘗試訪問新頁面）時，它就不再工作了。

有什麼提示嗎？

今天我能夠在問題發生之前進行更新，所以syslog我們

davide@brenna:~$ cat /var/log/syslog
Apr 30 09:19:18 brenna colord[1137]: (colord:1137): Cd-WARNING **: failed to get session [pid 4254]: Device o indirizzo non esistente
Apr 30 09:19:31 brenna anacron[962]: Job `cron.daily' terminated
Apr 30 09:19:31 brenna anacron[962]: Normal exit (1 job run)
Apr 30 09:26:23 brenna AptDaemon: INFO: Quitting due to inactivity
Apr 30 09:26:23 brenna AptDaemon: INFO: Quitting was requested
Apr 30 09:26:23 brenna org.debian.apt[891]: 09:26:23 AptDaemon [INFO]: Quitting due to inactivity
Apr 30 09:26:23 brenna org.debian.apt[891]: 09:26:23 AptDaemon [INFO]: Quitting was requested
Apr 30 09:29:18 brenna avahi-daemon[979]: Withdrawing address record for 192.168.0.216 on eth0.
Apr 30 09:29:18 brenna avahi-daemon[979]: Leaving mDNS multicast group on interface eth0.IPv4 with address 192.168.0.216.
Apr 30 09:29:18 brenna avahi-daemon[979]: Interface eth0.IPv4 no longer relevant for mDNS.
Apr 30 09:29:18 brenna systemd[1]: Starting Cleanup of Temporary Directories...
Apr 30 09:29:18 brenna systemd-tmpfiles[4409]: [/usr/lib/tmpfiles.d/var.conf:14] Duplicate line for path "/var/log", ignoring.
Apr 30 09:29:18 brenna gnome-session[2299]: [2547:2656:0430/092918:ERROR:cloud_print_proxy_backend.cc(538)] Notifications for connector 9EEEB091-559D-9344-6BAC-C8DDB4835FE9 disabled.
Apr 30 09:29:18 brenna gnome-session[2299]: [2547:2656:0430/092918:ERROR:cloud_print_proxy_backend.cc(538)] Notifications for connector 9EEEB091-559D-9344-6BAC-C8DDB4835FE9 disabled.
Apr 30 09:29:18 brenna systemd[1]: Started Cleanup of Temporary Directories.
Apr 30 09:29:18 brenna whoopsie[982]: [09:29:18] Cannot reach: https://daisy.ubuntu.com
Apr 30 09:29:18 brenna whoopsie[982]: [09:29:18] offline
Apr 30 09:29:19 brenna whoopsie[982]: [09:29:19] Cannot reach: https://daisy.ubuntu.com
Apr 30 09:32:46 brenna whoopsie[982]: [09:32:46] Cannot reach: https://daisy.ubuntu.com
Apr 30 09:33:02 brenna whoopsie[982]: [09:33:02] Cannot reach: https://daisy.ubuntu.com
Apr 30 09:33:18 brenna whoopsie[982]: [09:33:18] Cannot reach: https://daisy.ubuntu.com
Apr 30 09:38:24 brenna whoopsie[982]: [09:38:24] Cannot reach: https://daisy.ubuntu.com
Apr 30 09:39:00 brenna dbus[891]: [system] Activating service name='org.debian.apt' (using servicehelper)
Apr 30 09:39:01 brenna AptDaemon: INFO: Initializing daemon
Apr 30 09:39:01 brenna org.debian.apt[891]: 09:39:01 AptDaemon [INFO]: Initializing daemon
Apr 30 09:39:01 brenna dbus[891]: [system] Successfully activated service 'org.debian.apt'
Apr 30 09:39:01 brenna AptDaemon.PackageKit: INFO: Initializing PackageKit compat layer
Apr 30 09:39:01 brenna org.debian.apt[891]: /usr/lib/python3/dist-packages/aptdaemon/worker/pkworker.py:35: PyGIWarning: PackageKitGlib was imported without specifying a version first. Use gi.require_version('PackageKitGlib', '1.0') before import to ensure that the right version gets loaded.
Apr 30 09:39:01 brenna org.debian.apt[891]:   from gi.repository import PackageKitGlib as pk
Apr 30 09:39:01 brenna org.debian.apt[891]: 09:39:01 AptDaemon.PackageKit [INFO]: Initializing PackageKit compat layer
Apr 30 09:39:01 brenna AptDaemon: INFO: CommitPackages() was called: dbus.Array([dbus.String('')], signature=dbus.Signature('s')), dbus.Array([dbus.String('')], signature=dbus.Signature('s')), dbus.Array([dbus.String('')], signature=dbus.Signature('s')), dbus.Array([dbus.String('')], signature=dbus.Signature('s')), dbus.Array([dbus.String('ubuntu-core-launcher')], signature=dbus.Signature('s')), dbus.Array([dbus.String('')], signature=dbus.Signature('s'))
Apr 30 09:39:01 brenna org.debian.apt[891]: 09:39:01 AptDaemon [INFO]: CommitPackages() was called: dbus.Array([dbus.String('')], signature=dbus.Signature('s')), dbus.Array([dbus.String('')], signature=dbus.Signature('s')), dbus.Array([dbus.String('')], signature=dbus.Signature('s')), dbus.Array([dbus.String('')], signature=dbus.Signature('s')), dbus.Array([dbus.String('ubuntu-core-launcher')], signature=dbus.Signature('s')), dbus.Array([dbus.String('')], signature=dbus.Signature('s'))
Apr 30 09:39:01 brenna AptDaemon.Trans: INFO: Queuing transaction /org/debian/apt/transaction/c920bbc5aef04a96b9cfe22ca0070cab
Apr 30 09:39:01 brenna org.debian.apt[891]: 09:39:01 AptDaemon.Trans [INFO]: Queuing transaction /org/debian/apt/transaction/c920bbc5aef04a96b9cfe22ca0070cab
Apr 30 09:39:01 brenna AptDaemon.Worker: INFO: Simulating trans: /org/debian/apt/transaction/c920bbc5aef04a96b9cfe22ca0070cab
Apr 30 09:39:01 brenna org.debian.apt[891]: 09:39:01 AptDaemon.Worker [INFO]: Simulating trans: /org/debian/apt/transaction/c920bbc5aef04a96b9cfe22ca0070cab
Apr 30 09:39:01 brenna AptDaemon.Worker: INFO: Committing packages: dbus.Array([], signature=dbus.Signature('s')), dbus.Array([], signature=dbus.Signature('s')), dbus.Array([], signature=dbus.Signature('s')), dbus.Array([], signature=dbus.Signature('s')), dbus.Array([dbus.String('ubuntu-core-launcher')], signature=dbus.Signature('s')), dbus.Array([], signature=dbus.Signature('s'))
Apr 30 09:39:01 brenna org.debian.apt[891]: 09:39:01 AptDaemon.Worker [INFO]: Committing packages: dbus.Array([], signature=dbus.Signature('s')), dbus.Array([], signature=dbus.Signature('s')), dbus.Array([], signature=dbus.Signature('s')), dbus.Array([], signature=dbus.Signature('s')), dbus.Array([dbus.String('ubuntu-core-launcher')], signature=dbus.Signature('s')), dbus.Array([], signature=dbus.Signature('s'))
Apr 30 09:39:02 brenna AptDaemon.Worker: INFO: Processing transaction /org/debian/apt/transaction/c920bbc5aef04a96b9cfe22ca0070cab
Apr 30 09:39:02 brenna org.debian.apt[891]: 09:39:02 AptDaemon.Worker [INFO]: Processing transaction /org/debian/apt/transaction/c920bbc5aef04a96b9cfe22ca0070cab
Apr 30 09:39:02 brenna gnome-session[2299]: debconf: DbDriver "passwords" warning: could not open /var/cache/debconf/passwords.dat: Permission denied
Apr 30 09:39:04 brenna kernel: [ 1491.033247] audit_printk_skb: 52 callbacks suppressed
Apr 30 09:39:04 brenna kernel: [ 1491.033251] audit: type=1400 audit(1462001944.072:28): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/bin/ubuntu-core-launcher" pid=4526 comm="apparmor_parser"
Apr 30 09:39:03 brenna gnome-session[2299]: message repeated 2 times: [ debconf: DbDriver "passwords" warning: could not open /var/cache/debconf/passwords.dat: Permission denied]
Apr 30 09:39:05 brenna AptDaemon.Worker: INFO: Finished transaction /org/debian/apt/transaction/c920bbc5aef04a96b9cfe22ca0070cab
Apr 30 09:39:05 brenna org.debian.apt[891]: /usr/lib/python3/dist-packages/aptdaemon/progress.py:491: Warning: Source ID 41 was not found when attempting to remove it
Apr 30 09:39:05 brenna org.debian.apt[891]:   GLib.source_remove(id)
Apr 30 09:39:05 brenna org.debian.apt[891]: /usr/lib/python3/dist-packages/aptdaemon/progress.py:491: Warning: Source ID 42 was not found when attempting to remove it
Apr 30 09:39:05 brenna org.debian.apt[891]:   GLib.source_remove(id)
Apr 30 09:39:05 brenna org.debian.apt[891]: 09:39:05 AptDaemon.Worker [INFO]: Finished transaction /org/debian/apt/transaction/c920bbc5aef04a96b9cfe22ca0070cab
Apr 30 09:39:06 brenna gnome-session[2299]: (unity-control-center:4593): unity-control-center-WARNING **: Could not load /usr/share/themes/Adwaita/index.theme: File o directory non esistente
Apr 30 09:39:21 brenna gnome-session[2299]: /usr/bin/update-manager:28: PyGIWarning: Gtk was imported without specifying a version first. Use gi.require_version('Gtk', '3.0') before import to ensure that the right version gets loaded.
Apr 30 09:39:21 brenna gnome-session[2299]:   from gi.repository import Gtk
Apr 30 09:39:21 brenna gnome-session[2299]: /usr/lib/python3/dist-packages/UpdateManager/UnitySupport.py:29: PyGIWarning: Dbusmenu was imported without specifying a version first. Use gi.require_version('Dbusmenu', '0.4') before import to ensure that the right version gets loaded.
Apr 30 09:39:21 brenna gnome-session[2299]:   from gi.repository import Dbusmenu, Unity
Apr 30 09:39:21 brenna gnome-session[2299]: /usr/lib/python3/dist-packages/UpdateManager/UnitySupport.py:29: PyGIWarning: Unity was imported without specifying a version first. Use gi.require_version('Unity', '7.0') before import to ensure that the right version gets loaded.
Apr 30 09:39:21 brenna gnome-session[2299]:   from gi.repository import Dbusmenu, Unity
Apr 30 09:39:23 brenna com.ubuntu.OneConf[2070]: WARNING:oneconf.hosts:Error in loading other_hosts file: [Errno 2] No such file or directory: '/home/davide/.cache/oneconf/3bdacd8fb8c349449cd523c9f50dfcb9/other_hosts'

按要求

davide@brenna:~$ lspci -nn | grep Network
07:00.0 Network controller [0280]: Intel Corporation Centrino Wireless-N 2230 [8086:0887] (rev c4)
davide@brenna:~$ lspci -nn | grep Eth
09:00.0 Ethernet controller [0200]: Qualcomm Atheros AR8161 Gigabit Ethernet [1969:1091] (rev 10)

我透過 systemd 日誌找到了這個

mag 05 12:18:32 brenna avahi-daemon[939]: Withdrawing address record for 192.168.0.216 on eth0.
mag 05 12:18:32 brenna gnome-session[1789]: [2013:2119:0505/121832:ERROR:cloud_print_proxy_backend.cc(538)] Notifications for connector 9EEEB091-559D-9344-6BAC-C8DDB4835
mag 05 12:18:32 brenna gnome-session[1789]: [2013:2119:0505/121832:ERROR:cloud_print_proxy_backend.cc(538)] Notifications for connector 9EEEB091-559D-9344-6BAC-C8DDB4835
mag 05 12:18:32 brenna avahi-daemon[939]: Leaving mDNS multicast group on interface eth0.IPv4 with address 192.168.0.216.
mag 05 12:18:32 brenna systemd[1]: Starting Cleanup of Temporary Directories...
mag 05 12:18:32 brenna whoopsie[931]: [12:18:32] Cannot reach: https://daisy.ubuntu.com
mag 05 12:18:32 brenna whoopsie[931]: [12:18:32] offline
mag 05 12:18:32 brenna avahi-daemon[939]: Interface eth0.IPv4 no longer relevant for mDNS.
mag 05 12:18:32 brenna systemd-tmpfiles[4930]: [/usr/lib/tmpfiles.d/var.conf:14] Duplicate line for path "/var/log", ignoring.
mag 05 12:18:33 brenna systemd[1]: Started Cleanup of Temporary Directories.
mag 05 12:18:33 brenna whoopsie[931]: [12:18:33] Cannot reach: https://daisy.ubuntu.com

和這個問題關於avahi-daemon。投資這個方向——

答案1

正常更新後問題已解決，因此尚不清楚問題到底出在哪裡。

答案2

檢查 的內容/etc/network/interfaces。儘管我可能是錯的，但在我看來，您似乎是透過 GUI 管理網路。我之前遇到過 /etc/network/interfaces文件與 Ubuntu GUI 設定之間發生衝突的問題。

如果/etc/network/interfaces其中設定了網絡，請嘗試刪除它們並僅使用 GUI 設定。如果這不起作用，並且該文件中只有以下幾行，請嘗試以下步驟。

auto lo
iface lo inet loopback

如果你的/etc/network/interfaces檔案只有這些行，我的第一個嘗試是刪除 Ubuntu GUI 網路中的所有內容並放入/etc/network/interfaces：

auto eth0
iface eth0 inet dhcp

或設定靜態 IP（對於沒有 dhcp 路由器的情況）：

auto eth0
iface eth0 inet static
  address 192.168.1.14
  gateway 192.168.1.1
  netmask 255.255.255.0
  network 192.168.1.0
  broadcast 192.168.1.255

並eth0用eth1或wlan0 等替換輔助乙太網路或無線卡。

然後執行sudo /etc/init.d/networking restart測試一下，然後重新啟動看看是否有效。

PS：我不保證此功能有效。從您能夠發布的有限資訊中很難判斷問題出在哪裡。這只是我要嘗試的第一件事。

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