Public bug reported:

Internet drops every few minutes on both wired and wireless connections
even though connection icon indicates the computer is still connected.

Dropped internet is discovered with "The site can't be reached" screens
in Chromium, or error messages when downloading/updating in Terminal, or
missing connection in Application Manager, or stalled syncing in Insync
application (occurs even with Insync paused).

Disconnecting and reconnecting via the connection icon resets internet
temporarily.

Internet drops more frequently on wireless than on wired.

It seems to disconnect more frequently with heavier internet use (e.g.,
downloading multiple files, opening several webpages in quick
succession).

This is a fresh install (yesterday) of Ubuntu 16.04 on a Dell Inspiron
15 5567 (dual boot).

Ethernet and WiFi both work in Windows 10, so it is not a hardware or
router issue.

Output from sudo lshw -class network

*-network               
       description: Wireless interface
       product: Wireless 3165
       vendor: Intel Corporation
       physical id: 0
       bus info: pci@0000:02:00.0
       logical name: wlp2s0
       version: 79
       serial: 58:fb:84:55:21:52
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical 
wireless
       configuration: broadcast=yes driver=iwlwifi 
driverversion=4.4.0-62-generic firmware=17.352738.0 ip=192.168.1.15 latency=0 
link=yes multicast=yes wireless=IEEE 802.11abgn
       resources: irq:283 memory:df100000-df101fff
  *-network
       description: Ethernet interface
       product: RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: enp3s0
       version: 07
       serial: 18:db:f2:3c:d5:37
       size: 10Mbit/s
       capacity: 100Mbit/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 autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 
driverversion=2.3LK-NAPI duplex=half firmware=rtl8106e-1_0.0.1 06/29/12 
latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:279 ioport:d000(size=256) memory:df000000-df000fff 
memory:d0300000-d0303fff

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: network-manager 1.2.2-0ubuntu0.16.04.3
ProcVersionSignature: Ubuntu 4.4.0-62.83-generic 4.4.40
Uname: Linux 4.4.0-62-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
CurrentDesktop: Unity
Date: Tue Feb 21 16:36:55 2017
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
InstallationDate: Installed on 2017-02-20 (1 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
IpRoute:
 default via 192.168.1.1 dev wlp2s0  proto static  metric 600 
 169.254.0.0/16 dev wlp2s0  scope link  metric 1000 
 192.168.1.0/24 dev wlp2s0  proto kernel  scope link  src 192.168.1.15  metric 
600
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
SourcePackage: network-manager
UpgradeStatus: No upgrade log present (probably fresh install)
nmcli-dev:
 DEVICE  TYPE      STATE        DBUS-PATH                                  
CONNECTION       CON-UUID                              CON-PATH                 
                          
 wlp2s0  wifi      connected    /org/freedesktop/NetworkManager/Devices/0  
pr500k-9912ec-1  36301ded-0ac5-4a86-9621-87290ef159af  
/org/freedesktop/NetworkManager/ActiveConnection/5 
 enp3s0  ethernet  unavailable  /org/freedesktop/NetworkManager/Devices/1  --   
            --                                    --                            
                     
 lo      loopback  unmanaged    /org/freedesktop/NetworkManager/Devices/2  --   
            --                                    --
nmcli-nm:
 RUNNING  VERSION  STATE      STARTUP  CONNECTIVITY  NETWORKING  WIFI-HW  WIFI  
   WWAN-HW  WWAN    
 running  1.2.2    connected  started  full          enabled     enabled  
enabled  enabled  enabled

** Affects: network-manager (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug intel realtek xenial

** Attachment added: "wireless info script"
   
https://bugs.launchpad.net/bugs/1666432/+attachment/4823213/+files/wireless-info

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to network-manager in Ubuntu.
https://bugs.launchpad.net/bugs/1666432

Title:
  Internet drops every few minutes on wired and wireless connection

Status in network-manager package in Ubuntu:
  New

Bug description:
  Internet drops every few minutes on both wired and wireless
  connections even though connection icon indicates the computer is
  still connected.

  Dropped internet is discovered with "The site can't be reached"
  screens in Chromium, or error messages when downloading/updating in
  Terminal, or missing connection in Application Manager, or stalled
  syncing in Insync application (occurs even with Insync paused).

  Disconnecting and reconnecting via the connection icon resets internet
  temporarily.

  Internet drops more frequently on wireless than on wired.

  It seems to disconnect more frequently with heavier internet use
  (e.g., downloading multiple files, opening several webpages in quick
  succession).

  This is a fresh install (yesterday) of Ubuntu 16.04 on a Dell Inspiron
  15 5567 (dual boot).

  Ethernet and WiFi both work in Windows 10, so it is not a hardware or
  router issue.

  Output from sudo lshw -class network

  *-network               
         description: Wireless interface
         product: Wireless 3165
         vendor: Intel Corporation
         physical id: 0
         bus info: pci@0000:02:00.0
         logical name: wlp2s0
         version: 79
         serial: 58:fb:84:55:21:52
         width: 64 bits
         clock: 33MHz
         capabilities: pm msi pciexpress bus_master cap_list ethernet physical 
wireless
         configuration: broadcast=yes driver=iwlwifi 
driverversion=4.4.0-62-generic firmware=17.352738.0 ip=192.168.1.15 latency=0 
link=yes multicast=yes wireless=IEEE 802.11abgn
         resources: irq:283 memory:df100000-df101fff
    *-network
         description: Ethernet interface
         product: RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller
         vendor: Realtek Semiconductor Co., Ltd.
         physical id: 0
         bus info: pci@0000:03:00.0
         logical name: enp3s0
         version: 07
         serial: 18:db:f2:3c:d5:37
         size: 10Mbit/s
         capacity: 100Mbit/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 autonegotiation
         configuration: autonegotiation=on broadcast=yes driver=r8169 
driverversion=2.3LK-NAPI duplex=half firmware=rtl8106e-1_0.0.1 06/29/12 
latency=0 link=no multicast=yes port=MII speed=10Mbit/s
         resources: irq:279 ioport:d000(size=256) memory:df000000-df000fff 
memory:d0300000-d0303fff

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: network-manager 1.2.2-0ubuntu0.16.04.3
  ProcVersionSignature: Ubuntu 4.4.0-62.83-generic 4.4.40
  Uname: Linux 4.4.0-62-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.5
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Tue Feb 21 16:36:55 2017
  IfupdownConfig:
   # interfaces(5) file used by ifup(8) and ifdown(8)
   auto lo
   iface lo inet loopback
  InstallationDate: Installed on 2017-02-20 (1 days ago)
  InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 
(20160719)
  IpRoute:
   default via 192.168.1.1 dev wlp2s0  proto static  metric 600 
   169.254.0.0/16 dev wlp2s0  scope link  metric 1000 
   192.168.1.0/24 dev wlp2s0  proto kernel  scope link  src 192.168.1.15  
metric 600
  NetworkManager.state:
   [main]
   NetworkingEnabled=true
   WirelessEnabled=true
   WWANEnabled=true
  SourcePackage: network-manager
  UpgradeStatus: No upgrade log present (probably fresh install)
  nmcli-dev:
   DEVICE  TYPE      STATE        DBUS-PATH                                  
CONNECTION       CON-UUID                              CON-PATH                 
                          
   wlp2s0  wifi      connected    /org/freedesktop/NetworkManager/Devices/0  
pr500k-9912ec-1  36301ded-0ac5-4a86-9621-87290ef159af  
/org/freedesktop/NetworkManager/ActiveConnection/5 
   enp3s0  ethernet  unavailable  /org/freedesktop/NetworkManager/Devices/1  -- 
              --                                    --                          
                       
   lo      loopback  unmanaged    /org/freedesktop/NetworkManager/Devices/2  -- 
              --                                    --
  nmcli-nm:
   RUNNING  VERSION  STATE      STARTUP  CONNECTIVITY  NETWORKING  WIFI-HW  
WIFI     WWAN-HW  WWAN    
   running  1.2.2    connected  started  full          enabled     enabled  
enabled  enabled  enabled

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