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16.04、ネットワークが機能しなくなる

tag-icon • tag-icon networking 16.04
16.04、ネットワークが機能しなくなる

Ubuntu 16.04。ネットワーク（ケーブルまたは Wi-Fi の両方）は、一定時間が経過すると動作を停止します。

/var/log/syslogこれは、問題が最後に現れた後の私の姿です

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

プラグを抜いて再度差し込むと（または Wi-Fi カードをオフにして再度有効にすると）、次の再起動まで問題は解決します（つまり、その後は再起動するまでネットワークは無期限に動作します）。

これは、特に視覚的な出力がないため、非常に迷惑です。動作が停止し、オンライン リクエストを送信しようとしても (フォーラムに投稿したり、新しいページにアクセスしようとしたり)、動作しなくなります。

何かヒントはありますか?

今日は問題が発生する前にアップデートできたのでsyslog、

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'

リクエストに応じて

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)

私はこれをsystemdジャーナルで見つけた

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

そしてこの質問についてavahi-daemon。この方向に投資する---

答え1

問題は通常のアップデートで解決されたため、問題が正確にどこにあったのかは不明です。

答え2

の内容を確認してください/etc/network/interfaces。間違っているかもしれませんが、ネットワークを GUI から管理しているように思われます。以前、 /etc/network/interfacesファイルと Ubuntu GUI セットアップの間で競合が発生する問題が発生しました。

ネットワークが設定されている場合は/etc/network/interfaces、それらを削除して GUI 設定のみを使用してみてください。これが機能せず、そのファイルに次の行のみが含まれている場合は、次の手順を試してください。

auto lo
iface lo inet loopback

ファイルにこれらの行だけが含まれている場合/etc/network/interfaces、まずは Ubuntu GUI ネットワーク内のすべてを削除して、次の行を追加します/etc/network/interfaces。

auto eth0
iface eth0 inet dhcp

または、静的 IP を構成するには (DHCP ルーターがない場合) 次のようにします。

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

セカンダリ イーサネットまたはワイヤレス カードの場合は、またはなどeth0に置き換えます。eth1wlan0

次に実行sudo /etc/init.d/networking restartしてテストし、再起動して動作したかどうかを確認します。

追記: この方法がうまくいくかどうかは保証できません。投稿できる情報の量が限られているため、どこに問題があるのか​​判断するのは困難です。これは私が最初に試す方法にすぎません。

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