Recently I upgraded to Ubuntu 16.04 from 14.04 and now I am having issues connecting to the internet. Every time I try to connect to a wireless network, it tries to connect for a while and then gives up. At first not even the wired ethernet connection was working to connect to the internet. But then I read through these forums and added:
Code:
auto eth0 iface eth0 inet dhcp
I have gone to the Additional Drivers tab of Software & Updates. There is only one option and it does not appear to affect WiFi - it is listed as "Unknown:Unkown". I have tried with the box checked for "Using Processor microcode firmware for Intel CPUs from intel-microcode (proprietary)" and "Do not use the device". It doesn't appear to impact anything. I've also restarted the network manager after each time.
I have also tried
Code:
sudo apt-get update sudo apt-get install bcmwl-kernel-source
Here are my specs:
Computer: Lenovo X1 Carbon
Operating system: Ubuntu 16.04 LTS (I also dual boot with Windows 7, probably not important)
OS Type: 64-bit
Network controller: Intel Corporation Wireless 7260 (rev 83)
Now for the information dump....
Output of ifconfig:
Code:
eth0 Link encap:Ethernet HWaddr 54:ee:75:26:23:62 inet addr:18.54.7.82 Bcast:18.54.255.255 Mask:255.255.0.0
inet6 addr: fe80::56ee:75ff:fe26:2362/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:262127 errors:17 dropped:0 overruns:0 frame:12
TX packets:11037 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:35966534 (35.9 MB) TX bytes:2156256 (2.1 MB)
Interrupt:20 Memory:f0500000-f0520000
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:18 errors:0 dropped:0 overruns:0 frame:0
TX packets:18 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1
RX bytes:1314 (1.3 KB) TX bytes:1314 (1.3 KB)
wlan0 Link encap:Ethernet HWaddr 28:b2:bd:86:74:32
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
Code:
00:00.0 Host bridge: Intel Corporation Haswell-ULT DRAM Controller (rev 0b) Subsystem: Lenovo Haswell-ULT DRAM Controller
Flags: bus master, fast devsel, latency 0
Capabilities: [e0] Vendor Specific Information: Len=0c <?>
Kernel driver in use: hsw_uncore
00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller (rev 0b) (prog-if 00 [VGA controller])
Subsystem: Lenovo Haswell-ULT Integrated Graphics Controller
Flags: bus master, fast devsel, latency 0, IRQ 43
Memory at f0000000 (64-bit, non-prefetchable) [size=4M]
Memory at e0000000 (64-bit, prefetchable) [size=256M]
I/O ports at 3000 [size=64]
Expansion ROM at <unassigned> [disabled]
Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [d0] Power Management version 2
Capabilities: [a4] PCI Advanced Features
Kernel driver in use: i915
Kernel modules: i915
00:03.0 Audio device: Intel Corporation Haswell-ULT HD Audio Controller (rev 0b)
Subsystem: Lenovo Haswell-ULT HD Audio Controller
Flags: bus master, fast devsel, latency 0, IRQ 47
Memory at f0530000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [50] Power Management version 2
Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel
00:14.0 USB controller: Intel Corporation 8 Series USB xHCI HC (rev 04) (prog-if 30 [XHCI])
Subsystem: Lenovo 8 Series USB xHCI HC
Flags: bus master, medium devsel, latency 0, IRQ 40
Memory at f0520000 (64-bit, non-prefetchable) [size=64K]
Capabilities: [70] Power Management version 2
Capabilities: [80] MSI: Enable+ Count=1/8 Maskable- 64bit+
Kernel driver in use: xhci_hcd
00:16.0 Communication controller: Intel Corporation 8 Series HECI #0 (rev 04)
Subsystem: Lenovo 8 Series HECI
Flags: bus master, fast devsel, latency 0, IRQ 44
Memory at f0539000 (64-bit, non-prefetchable) [size=32]
Capabilities: [50] Power Management version 3
Capabilities: [8c] MSI: Enable+ Count=1/1 Maskable- 64bit+
Kernel driver in use: mei_me
Kernel modules: mei_me
00:16.3 Serial controller: Intel Corporation 8 Series HECI KT (rev 04) (prog-if 02 [16550])
Subsystem: Lenovo 8 Series HECI KT
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 17
I/O ports at 30b0 [size=8]
Memory at f053f000 (32-bit, non-prefetchable) [size=4K]
Capabilities: [c8] Power Management version 3
Capabilities: [d0] MSI: Enable- Count=1/1 Maskable- 64bit+
Kernel driver in use: serial
00:19.0 Ethernet controller: Intel Corporation Ethernet Connection I218-LM (rev 04)
Subsystem: Lenovo ThinkPad X240
Flags: bus master, fast devsel, latency 0, IRQ 41
Memory at f0500000 (32-bit, non-prefetchable) [size=128K]
Memory at f053e000 (32-bit, non-prefetchable) [size=4K]
I/O ports at 3080 [size=32]
Capabilities: [c8] Power Management version 2
Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [e0] PCI Advanced Features
Kernel driver in use: e1000e
Kernel modules: e1000e
00:1b.0 Audio device: Intel Corporation 8 Series HD Audio Controller (rev 04)
Subsystem: Lenovo 8 Series HD Audio Controller
Flags: bus master, fast devsel, latency 0, IRQ 45
Memory at f0534000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [50] Power Management version 3
Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
Capabilities: [100] Virtual Channel
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel
00:1c.0 PCI bridge: Intel Corporation 8 Series PCI Express Root Port 6 (rev e4) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0, IRQ 17
Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
I/O behind bridge: 00002000-00002fff
Memory behind bridge: dfb00000-dfcfffff
Prefetchable memory behind bridge: 00000000dfd00000-00000000dfefffff
Capabilities: [40] Express Root Port (Slot+), MSI 00
Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
Capabilities: [90] Subsystem: Lenovo 8 Series PCI Express Root Port 6
Capabilities: [a0] Power Management version 3
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1c.1 PCI bridge: Intel Corporation 8 Series PCI Express Root Port 3 (rev e4) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 0, IRQ 18
Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
Memory behind bridge: f0400000-f04fffff
Capabilities: [40] Express Root Port (Slot+), MSI 00
Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
Capabilities: [90] Subsystem: Lenovo 8 Series PCI Express Root Port 3
Capabilities: [a0] Power Management version 3
Capabilities: [100] #00
Capabilities: [200] L1 PM Substates
Kernel driver in use: pcieport
Kernel modules: shpchp
00:1d.0 USB controller: Intel Corporation 8 Series USB EHCI #1 (rev 04) (prog-if 20 [EHCI])
Subsystem: Lenovo 8 Series USB EHCI
Flags: bus master, medium devsel, latency 0, IRQ 23
Memory at f053d000 (32-bit, non-prefetchable) [size=1K]
Capabilities: [50] Power Management version 3
Capabilities: [58] Debug port: BAR=1 offset=00a0
Capabilities: [98] PCI Advanced Features
Kernel driver in use: ehci-pci
00:1f.0 ISA bridge: Intel Corporation 8 Series LPC Controller (rev 04)
Subsystem: Lenovo 8 Series LPC Controller
Flags: bus master, medium devsel, latency 0
Capabilities: [e0] Vendor Specific Information: Len=0c <?>
Kernel driver in use: lpc_ich
Kernel modules: lpc_ich
00:1f.2 SATA controller: Intel Corporation 8 Series SATA Controller 1 [AHCI mode] (rev 04) (prog-if 01 [AHCI 1.0])
Subsystem: Lenovo 8 Series SATA Controller 1 [AHCI mode]
Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 42
I/O ports at 30a8 [size=8]
I/O ports at 30bc [size=4]
I/O ports at 30a0 [size=8]
I/O ports at 30b8 [size=4]
I/O ports at 3060 [size=32]
Memory at f053c000 (32-bit, non-prefetchable) [size=2K]
Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [70] Power Management version 3
Capabilities: [a8] SATA HBA v1.0
Kernel driver in use: ahci
Kernel modules: ahci
00:1f.3 SMBus: Intel Corporation 8 Series SMBus Controller (rev 04)
Subsystem: Lenovo 8 Series SMBus Controller
Flags: medium devsel, IRQ 10
Memory at f0538000 (64-bit, non-prefetchable) [size=256]
I/O ports at efa0 [size=32]
Kernel modules: i2c_i801
03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 83)
Subsystem: Intel Corporation Dual Band Wireless-AC 7260
Flags: bus master, fast devsel, latency 0, IRQ 46
Memory at f0400000 (64-bit, non-prefetchable) [size=8K]
Capabilities: [c8] Power Management version 3
Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [40] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Device Serial Number 28-b2-bd-ff-ff-86-74-32
Capabilities: [14c] Latency Tolerance Reporting
Capabilities: [154] Vendor Specific Information: ID=cafe Rev=1 Len=014 <?>
Kernel driver in use: iwlwifi
Kernel modules: iwlwifi, wl
Code:
Module Size Used byrfcomm 69632 0 ebtable_filter 16384 0 ebtables 36864 1 ebtable_filter ip6table_filter 16384 0 ip6_tables 28672 1 ip6table_filter iptable_filter 16384 0 ip_tables 24576 1 iptable_filter x_tables 36864 5 ip6table_filter,ip_tables,iptable_filter,ebtables,ip6_tables openafs 782336 2 bnep 20480 2 snd_hda_codec_hdmi 53248 1 arc4 16384 2 intel_rapl 20480 0 x86_pkg_temp_thermal 16384 0 intel_powerclamp 16384 0 coretemp 16384 0 crct10dif_pclmul 16384 0 crc32_pclmul 16384 0 aesni_intel 167936 0 aes_x86_64 20480 1 aesni_intel lrw 16384 1 aesni_intel gf128mul 16384 1 lrw glue_helper 16384 1 aesni_intel uvcvideo 90112 0 ablk_helper 16384 1 aesni_intel cryptd 20480 2 aesni_intel,ablk_helper videobuf2_vmalloc 16384 1 uvcvideo videobuf2_memops 16384 1 videobuf2_vmalloc videobuf2_v4l2 28672 1 uvcvideo videobuf2_core 36864 2 uvcvideo,videobuf2_v4l2 wl 6365184 0 v4l2_common 16384 1 videobuf2_v4l2 videodev 176128 4 uvcvideo,v4l2_common,videobuf2_core,videobuf2_v4l2 media 24576 2 uvcvideo,videodev iwlmvm 311296 0 mac80211 737280 1 iwlmvm joydev 20480 0 input_leds 16384 0 btusb 45056 0 btrtl 16384 1 btusb serio_raw 16384 0 btbcm 16384 1 btusb btintel 16384 1 btusb bluetooth 520192 29 bnep,btbcm,btrtl,btusb,rfcomm,btintel iwlwifi 200704 1 iwlmvm cfg80211 565248 4 wl,iwlwifi,mac80211,iwlmvm snd_hda_codec_realtek 86016 1 snd_hda_codec_generic 77824 1 snd_hda_codec_realtek snd_hda_intel 36864 5 snd_hda_codec 135168 4 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_intel snd_hda_core 73728 5 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel lpc_ich 24576 0 snd_hwdep 16384 1 snd_hda_codec shpchp 36864 0 snd_pcm 106496 4 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel,snd_hda_core mei_me 36864 0 mei 98304 1 mei_me snd_seq_midi 16384 0 snd_seq_midi_event 16384 1 snd_seq_midi snd_rawmidi 32768 1 snd_seq_midi thinkpad_acpi 90112 1 nvram 16384 1 thinkpad_acpi snd_seq 69632 2 snd_seq_midi_event,snd_seq_midi snd_seq_device 16384 3 snd_seq,snd_rawmidi,snd_seq_midi snd_timer 32768 2 snd_pcm,snd_seq snd 81920 22 snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel,thinkpad_acpi,snd_seq_device i2c_designware_platform 16384 0 i2c_designware_core 20480 1 i2c_designware_platform mac_hid 16384 0 intel_rst 16384 0 soundcore 16384 1 snd binfmt_misc 20480 1 kvm 540672 0 irqbypass 16384 1 kvm parport_pc 32768 0 ppdev 20480 0 lp 20480 0 parport 49152 3 lp,ppdev,parport_pc autofs4 40960 2 i915 1208320 6 psmouse 126976 0 i2c_algo_bit 16384 1 i915 ahci 36864 2 drm_kms_helper 147456 1 i915 libahci 32768 1 ahci syscopyarea 16384 1 drm_kms_helper sysfillrect 16384 1 drm_kms_helper sysimgblt 16384 1 drm_kms_helper e1000e 237568 0 fb_sys_fops 16384 1 drm_kms_helper drm 364544 7 i915,drm_kms_helper ptp 20480 1 e1000e pps_core 20480 1 ptp wmi 20480 0 fjes 28672 0 video 40960 2 i915,thinkpad_acpi
Output of the wireless info script
Code:
########## wireless info START ##########
Report from: 09 Aug 2016 12:25 EDT -0400
Booted last: 09 Aug 2016 00:00 EDT -0400
Script from: 08 Jul 2016 02:16 UTC +0000
##### release ###########################
Distributor ID: Ubuntu
Description: Ubuntu 16.04.1 LTS
Release: 16.04
Codename: xenial
##### kernel ############################
Linux 4.4.0-34-generic #53-Ubuntu SMP Wed Jul 27 16:06:39 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
Parameters: ro, quiet, splash, vt.handoff=7
##### desktop ###########################
Ubuntu
##### lspci #############################
00:19.0 Ethernet controller [0200]: Intel Corporation Ethernet Connection I218-LM [8086:155a] (rev 04)
Subsystem: Lenovo ThinkPad X240 [17aa:2214]
Kernel driver in use: e1000e
03:00.0 Network controller [0280]: Intel Corporation Wireless 7260 [8086:08b2] (rev 83)
Subsystem: Intel Corporation Dual Band Wireless-AC 7260 [8086:c270]
Kernel driver in use: iwlwifi
##### lsusb #############################
Bus 001 Device 003: ID 04f2:b3f5 Chicony Electronics Co., Ltd
Bus 001 Device 002: ID 8087:8000 Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 003: ID 8087:07dc Intel Corp.
Bus 002 Device 002: ID 138a:0017 Validity Sensors, Inc. Fingerprint Reader
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
##### PCMCIA card info ##################
##### rfkill ############################
0: tpacpi_bluetooth_sw: Bluetooth
Soft blocked: no
Hard blocked: no
1: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
2: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
##### lsmod #############################
wl 6365184 0
iwlmvm 311296 0
mac80211 737280 1 iwlmvm
iwlwifi 200704 1 iwlmvm
cfg80211 565248 4 wl,iwlwifi,mac80211,iwlmvm
wmi 20480 0
##### interfaces ########################
auto lo
iface lo inet loopback
auto eth0
iface eth0 inet dhcp
##### ifconfig ##########################
eth0 Link encap:Ethernet HWaddr <MAC 'eth0' [IF1]>
inet addr:18.54.7.82 Bcast:18.54.255.255 Mask:255.255.0.0
inet6 addr: fe80::<IP6 'eth0' [IF1]>/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:546715 errors:18 dropped:0 overruns:0 frame:13
TX packets:16826 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:58901376 (58.9 MB) TX bytes:3942839 (3.9 MB)
Interrupt:20 Memory:f0500000-f0520000
wlan0 Link encap:Ethernet HWaddr <MAC 'wlan0' [IF2]>
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:2 errors:0 dropped:1 overruns:0 frame:0
TX packets:23 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:382 (382.0 B) TX bytes:3368 (3.3 KB)
##### iwconfig ##########################
lo no wireless extensions.
eth0 no wireless extensions.
wlan0 IEEE 802.11abgn ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=22 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:on
##### route #############################
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 18.54.0.1 0.0.0.0 UG 0 0 0 eth0
18.54.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 eth0
##### resolv.conf #######################
nameserver 18.71.0.151
nameserver 18.70.0.160
nameserver 18.72.0.3
search mit.edu
##### network managers ##################
Installed:
NetworkManager
Running:
root 2493 1 0 11:31 ? 00:00:02 /usr/sbin/NetworkManager --no-daemon
##### NetworkManager info ###############
GENERAL.DEVICE: wlan0
GENERAL.TYPE: wifi
GENERAL.NM-TYPE: NMDeviceWifi
GENERAL.VENDOR: Intel Corporation
GENERAL.PRODUCT: Wireless 7260 (Dual Band Wireless-AC 7260)
GENERAL.DRIVER: iwlwifi
GENERAL.DRIVER-VERSION: 4.4.0-34-generic
GENERAL.FIRMWARE-VERSION: 16.242414.0
GENERAL.HWADDR: <MAC 'wlan0' [IF2]>
GENERAL.MTU: 0
GENERAL.STATE: 30 (disconnected)
GENERAL.REASON: 0 (No reason given)
GENERAL.UDI: /sys/devices/pci0000:00/0000:00:1c.1/0000:03:00.0/net/wlan0
GENERAL.IP-IFACE:
GENERAL.IS-SOFTWARE: no
GENERAL.NM-MANAGED: yes
GENERAL.AUTOCONNECT: yes
GENERAL.FIRMWARE-MISSING: no
GENERAL.NM-PLUGIN-MISSING: no
GENERAL.PHYS-PORT-ID: --
GENERAL.CONNECTION: --
GENERAL.CON-UUID: --
GENERAL.CON-PATH: --
GENERAL.METERED: unknown
CAPABILITIES.CARRIER-DETECT: no
CAPABILITIES.SPEED: unknown
CAPABILITIES.IS-SOFTWARE: no
WIFI-PROPERTIES.WEP: yes
WIFI-PROPERTIES.WPA: yes
WIFI-PROPERTIES.WPA2: yes
WIFI-PROPERTIES.TKIP: yes
WIFI-PROPERTIES.CCMP: yes
WIFI-PROPERTIES.AP: yes
WIFI-PROPERTIES.ADHOC: yes
WIFI-PROPERTIES.2GHZ: yes
WIFI-PROPERTIES.5GHZ: yes
CONNECTIONS.AVAILABLE-CONNECTION-PATHS: /org/freedesktop/NetworkManager/Settings/{1,2,0}
CONNECTIONS.AVAILABLE-CONNECTIONS[1]: 2a219cfc-4a37-4b06-8d74-e33db79518da | MIT SECURE
CONNECTIONS.AVAILABLE-CONNECTIONS[2]: 26cdb641-ee26-4ffa-a4fd-4ee494394ffa | MIT GUEST
CONNECTIONS.AVAILABLE-CONNECTIONS[3]: c9b5f5db-9990-4715-88e3-887efa05a01d | MIT
GENERAL.DEVICE: eth0
GENERAL.TYPE: ethernet
GENERAL.NM-TYPE: NMDeviceEthernet
GENERAL.VENDOR: Intel Corporation
GENERAL.PRODUCT: Ethernet Connection I218-LM (ThinkPad X240)
GENERAL.DRIVER: e1000e
GENERAL.DRIVER-VERSION: 3.2.6-k
GENERAL.FIRMWARE-VERSION: 0.6-4
GENERAL.HWADDR: <MAC 'eth0' [IF1]>
GENERAL.MTU: 1500
GENERAL.STATE: 10 (unmanaged)
GENERAL.REASON: 0 (No reason given)
GENERAL.UDI: /sys/devices/pci0000:00/0000:00:19.0/net/eth0
GENERAL.IP-IFACE: eth0
GENERAL.IS-SOFTWARE: no
GENERAL.NM-MANAGED: no
GENERAL.AUTOCONNECT: yes
GENERAL.FIRMWARE-MISSING: no
GENERAL.NM-PLUGIN-MISSING: no
GENERAL.PHYS-PORT-ID: --
GENERAL.CONNECTION: --
GENERAL.CON-UUID: --
GENERAL.CON-PATH: --
GENERAL.METERED: unknown
CAPABILITIES.CARRIER-DETECT: yes
CAPABILITIES.SPEED: 1000 Mb/s
CAPABILITIES.IS-SOFTWARE: no
WIRED-PROPERTIES.CARRIER: on
CONNECTIONS.AVAILABLE-CONNECTION-PATHS:
IP4.ADDRESS[1]: 18.54.7.82/16
IP4.GATEWAY: 18.54.0.1
IP4.ROUTE[1]: dst = 169.254.0.0/16, nh = 0.0.0.0, mt = 1000
IP6.ADDRESS[1]: fe80::<IP6 'eth0' [IF1]>/64
IP6.GATEWAY:
Cannot Connect to WiFi After Upgrading to Ubuntu 16.04
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