O problema é que os drivers proprietários, que trabalharam com o 14.04, não funcionam mais para o Ubuntu 16.04. Eu não atualizei, eu fiz uma instalação limpa. sudo lshw -C network mostra que a minha placa WLAN está DESCLAIMED, apesar de eu estar usando drivers proprietários, o que resolveu o problema em 14.04. Eu fiz uma instalação limpa do Ubuntu 16.04, eu não atualizei. Eu sou novo no Ubuntu e Linux, tenho usado o Windows toda a minha vida, tão nua comigo. Seria realmente útil se eu pudesse finalmente parar de usar meu telefone como um cabo sem fio. Também usei um script que foi mencionado em um post para ajudar com a resposta. Felicidades
########## wireless info START ##########
Report from: 04 May 2016 19:49 CEST +0200
Booted last: 04 May 2016 00:00 CEST +0200
Script from: 27 Sep 2015 00:34 UTC +0000
##### release ###########################
Distributor ID: Ubuntu
Description: Ubuntu 16.04 LTS
Release: 16.04
Codename: xenial
##### kernel ############################
Linux 4.4.0-21-generic #37-Ubuntu SMP Mon Apr 18 18:33:37 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
Parameters: ro, quiet, splash, vt.handoff=7
##### desktop ###########################
Ubuntu
##### lspci #############################
02:00.1 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 12)
Subsystem: Acer Incorporated [ALI] RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [1025:0864]
Kernel driver in use: r8169
03:00.0 Network controller [0280]: Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01)
Subsystem: Lite-On Communications Inc BCM43142 802.11b/g/n [11ad:6645]
Kernel modules: bcma, wl
##### lsusb #############################
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 002: ID 06cb:2970 Synaptics, Inc. touchpad
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 003: ID 04f2:b469 Chicony Electronics Co., Ltd
Bus 001 Device 002: ID 0502:3827 Acer, Inc.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 004: ID 04ca:2009 Lite-On Technology Corp.
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
##### PCMCIA card info ##################
##### rfkill ############################
0: acer-wireless: Wireless LAN
Soft blocked: no
Hard blocked: no
1: acer-bluetooth: Bluetooth
Soft blocked: yes
Hard blocked: no
2: hci0: Bluetooth
Soft blocked: yes
Hard blocked: no
##### lsmod #############################
acer_wmi 20480 0
sparse_keymap 16384 1 acer_wmi
cfg80211 565248 0
wmi 20480 1 acer_wmi
video 40960 1 acer_wmi
##### interfaces ########################
auto lo
iface lo inet loopback
##### ifconfig ##########################
enp2s0f1 Link encap:Ethernet HWaddr
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)
enxe29ea79c4d96 Link encap:Ethernet HWaddr
inet addr:192.168.42.253 Bcast:192.168.42.255 Mask:255.255.255.0
inet6 addr: fe80::e203:6a7d:868a:748c/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1551 errors:0 dropped:0 overruns:0 frame:0
TX packets:1593 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:918949 (918.9 KB) TX bytes:273825 (273.8 KB)
##### iwconfig ##########################
enxe29ea79c4d96 no wireless extensions.
enp2s0f1 no wireless extensions.
lo no wireless extensions.
##### route #############################
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 192.168.42.129 0.0.0.0 UG 100 0 0 enxe29ea79c4d96
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 enxe29ea79c4d96
192.168.42.0 0.0.0.0 255.255.255.0 U 100 0 0 enxe29ea79c4d96
##### resolv.conf #######################
nameserver 127.0.1.1
##### network managers ##################
Installed:
NetworkManager
Running:
root 778 1 0 19:45 ? 00:00:00 /usr/sbin/NetworkManager --no-daemon
##### NetworkManager info ###############
GENERAL.DEVICE: enxe29ea79c4d96
GENERAL.TYPE: ethernet
GENERAL.NM-TYPE: NMDeviceEthernet
GENERAL.VENDOR: MediaTek
GENERAL.PRODUCT: T02
GENERAL.DRIVER: rndis_host
GENERAL.DRIVER-VERSION: 22-Aug-2005
GENERAL.FIRMWARE-VERSION: RNDIS device
GENERAL.HWADDR:
GENERAL.MTU: 1500
GENERAL.STATE: 100 (connected)
GENERAL.REASON: 0 (No reason given)
GENERAL.UDI: /sys/devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/net/enxe29ea79c4d96
GENERAL.IP-IFACE: enxe29ea79c4d96
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: Wired connection 1
GENERAL.CON-UUID: 5dd869a6-e315-4289-9761-2d898b466ea6
GENERAL.CON-PATH: /org/freedesktop/NetworkManager/ActiveConnection/0
GENERAL.METERED: yes (guessed)
CAPABILITIES.CARRIER-DETECT: yes
CAPABILITIES.SPEED: unknown
CAPABILITIES.IS-SOFTWARE: no
WIRED-PROPERTIES.CARRIER: on
CONNECTIONS.AVAILABLE-CONNECTION-PATHS: /org/freedesktop/NetworkManager/Settings/{0}
CONNECTIONS.AVAILABLE-CONNECTIONS[1]: 5dd869a6-e315-4289-9761-2d898b466ea6 | Wired connection 1
IP4.ADDRESS[1]: 192.168.42.253/24
IP4.GATEWAY: 192.168.42.129
IP4.ROUTE[1]: dst = 169.254.0.0/16, nh = 0.0.0.0, mt = 1000
IP4.DNS[1]: 192.168.42.129
DHCP4.OPTION[1]: requested_subnet_mask = 1
DHCP4.OPTION[2]: requested_rfc3442_classless_static_routes = 1
DHCP4.OPTION[3]: subnet_mask = 255.255.255.0
DHCP4.OPTION[4]: domain_name_servers = 192.168.42.129
DHCP4.OPTION[5]: ip_address = 192.168.42.253
DHCP4.OPTION[6]: requested_static_routes = 1
DHCP4.OPTION[7]: dhcp_server_identifier = 192.168.42.129
DHCP4.OPTION[8]: requested_time_offset = 1
DHCP4.OPTION[9]: broadcast_address = 192.168.42.255
DHCP4.OPTION[10]: requested_interface_mtu = 1
DHCP4.OPTION[11]: dhcp_rebinding_time = 3150
DHCP4.OPTION[12]: requested_domain_name_servers = 1
DHCP4.OPTION[13]: dhcp_message_type = 5
DHCP4.OPTION[14]: requested_broadcast_address = 1
DHCP4.OPTION[15]: routers = 192.168.42.129
DHCP4.OPTION[16]: dhcp_renewal_time = 1800
DHCP4.OPTION[17]: requested_domain_name = 1
DHCP4.OPTION[18]: requested_routers = 1
DHCP4.OPTION[19]: expiry = 1462387551
DHCP4.OPTION[20]: requested_wpad = 1
DHCP4.OPTION[21]: host_name = Technomancer
DHCP4.OPTION[22]: requested_netbios_scope = 1
DHCP4.OPTION[23]: requested_ms_classless_static_routes = 1
DHCP4.OPTION[24]: requested_netbios_name_servers = 1
DHCP4.OPTION[25]: network_number = 192.168.42.0
DHCP4.OPTION[26]: requested_domain_search = 1
DHCP4.OPTION[27]: vendor_encapsulated_options = ANDROID_METERED
DHCP4.OPTION[28]: next_server = 192.168.42.129
DHCP4.OPTION[29]: requested_host_name = 1
DHCP4.OPTION[30]: dhcp_lease_time = 3600
DHCP4.OPTION[31]: requested_ntp_servers = 1
IP6.ADDRESS[1]: fe80::e203:6a7d:868a:748c/64
IP6.GATEWAY:
GENERAL.DEVICE: enp2s0f1
GENERAL.TYPE: ethernet
GENERAL.NM-TYPE: NMDeviceEthernet
GENERAL.VENDOR: Realtek Semiconductor Co., Ltd.
GENERAL.PRODUCT: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
GENERAL.DRIVER: r8169
GENERAL.DRIVER-VERSION: 2.3LK-NAPI
GENERAL.FIRMWARE-VERSION:
GENERAL.HWADDR:
GENERAL.MTU: 1500
GENERAL.STATE: 20 (unavailable)
GENERAL.REASON: 2 (Device is now managed)
GENERAL.UDI: /sys/devices/pci0000:00/0000:00:03.1/0000:02:00.1/net/enp2s0f1
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: yes
CAPABILITIES.SPEED: unknown
CAPABILITIES.IS-SOFTWARE: no
WIRED-PROPERTIES.CARRIER: off
CONNECTIONS.AVAILABLE-CONNECTION-PATHS:
##### NetworkManager.state ##############
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
##### NetworkManager.conf ###############
[main]
plugins=ifupdown,keyfile,ofono
dns=dnsmasq
[ifupdown]
managed=false
##### NetworkManager profiles ###########
##### iw reg get ########################
Region: Europe/Belgrade (based on set time zone)
country 00: DFS-UNSET
(2402 - 2472 @ 40), (N/A, 20), (N/A)
(2457 - 2482 @ 40), (N/A, 20), (N/A), NO-IR
(2474 - 2494 @ 20), (N/A, 20), (N/A), NO-OFDM, NO-IR
(5170 - 5250 @ 80), (N/A, 20), (N/A), NO-IR
(5250 - 5330 @ 80), (N/A, 20), (0 ms), DFS, NO-IR
(5490 - 5730 @ 160), (N/A, 20), (0 ms), DFS, NO-IR
(5735 - 5835 @ 80), (N/A, 20), (N/A), NO-IR
(57240 - 63720 @ 2160), (N/A, 0), (N/A)
##### iwlist channels ###################
enxe29ea79c4d96 no frequency information.
enp2s0f1 no frequency information.
lo no frequency information.
##### iwlist scan #######################
enxe29ea79c4d96 Interface doesn't support scanning.
enp2s0f1 Interface doesn't support scanning.
lo Interface doesn't support scanning.
##### module infos ######################
[cfg80211]
filename: /lib/modules/4.4.0-21-generic/kernel/net/wireless/cfg80211.ko
description: wireless configuration support
license: GPL
author: Johannes Berg
srcversion: 00D8DA6D3B739DDD31FFF50
depends:
intree: Y
vermagic: 4.4.0-21-generic SMP mod_unload modversions
parm: ieee80211_regdom:IEEE 802.11 regulatory domain code (charp)
parm: cfg80211_disable_40mhz_24ghz:Disable 40MHz support in the 2.4GHz band (bool)
##### module parameters #################
[cfg80211]
cfg80211_disable_40mhz_24ghz: N
ieee80211_regdom: 00
##### /etc/modules ######################
##### modprobe options ##################
[/etc/modprobe.d/blacklist-ath_pci.conf]
blacklist ath_pci
[/etc/modprobe.d/blacklist-bcm43.conf]
blacklist b43
blacklist b43legacy
blacklist ssb
blacklist bcm43xx
blacklist brcm80211
blacklist brcmfmac
blacklist brcmsmac
blacklist bcma
[/etc/modprobe.d/blacklist.conf]
blacklist evbug
blacklist usbmouse
blacklist usbkbd
blacklist eepro100
blacklist de4x5
blacklist eth1394
blacklist snd_intel8x0m
blacklist snd_aw2
blacklist i2c_i801
blacklist prism54
blacklist bcm43xx
blacklist garmin_gps
blacklist asus_acpi
blacklist snd_pcsp
blacklist pcspkr
blacklist amd76x_edac
[/etc/modprobe.d/blacklist-rare-network.conf]
alias net-pf-3 off
alias net-pf-6 off
alias net-pf-9 off
alias net-pf-11 off
alias net-pf-12 off
alias net-pf-19 off
alias net-pf-21 off
alias net-pf-36 off
[/etc/modprobe.d/iwlwifi.conf]
remove iwlwifi \
(/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod) \
&& /sbin/modprobe -r mac80211
[/etc/modprobe.d/mlx4.conf]
softdep mlx4_core post: mlx4_en
##### rc.local ##########################
exit 0
##### pm-utils ##########################
##### udev rules ########################
grep: /etc/udev/rules.d/*net*.rules: No such file or directory
##### dmesg #############################
[ 14.718416] rndis_host 1-2:1.0 enxe29ea79c4d96: renamed from usb0
[ 30.518187] IPv6: ADDRCONF(NETDEV_UP): enxe29ea79c4d96: link is not ready
[ 30.526438] IPv6: ADDRCONF(NETDEV_UP): enp2s0f1: link is not ready
[ 30.605747] r8169 0000:02:00.1 enp2s0f1: link down
[ 30.605842] IPv6: ADDRCONF(NETDEV_UP): enp2s0f1: link is not ready
[ 161.825895] bluetooth hci0: Direct firmware load for brcm/BCM.hcd failed with error -2
[ 161.825908] Bluetooth: hci0: BCM: Patch brcm/BCM.hcd not found
########## wireless info END ############