O módulo wi-fi 7265AC não se conecta no Ubuntu 17.10. Eu atualizei os drivers, mas ainda não está conectado, nem bluetooth. Por quê?
$ lspci -nnk | grep 0280 -A3
02:00.0 Network controller [0280]: Intel Corporation Wireless 7265 [8086:095a] (rev 59)
Subsystem: Intel Corporation Dual Band Wireless-AC 7265 [8086:5010]
Kernel driver in use: iwlwifi
Kernel modules: iwlwifi
$ rfkill list
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
1: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
$ iwconfig
wlp2s0 IEEE 802.11 ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=0 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:on
lo no wireless extensions.
enp1s0 no wireless extensions.
$ dmesg | grep iwl
[ 3.736393] iwlwifi 0000:02:00.0: enabling device (0100 -> 0102)
[ 3.743942] iwlwifi 0000:02:00.0: loaded firmware version 29.610311.0 op_mode iwlmvm
[ 3.765152] iwlwifi 0000:02:00.0: Detected Intel(R) Dual Band Wireless AC 7265, REV=0x210
[ 3.783239] iwlwifi 0000:02:00.0: base HW address: e4:42:a6:3b:0c:8b
[ 3.851759] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'
[ 3.955842] iwlwifi 0000:02:00.0 wlp2s0: renamed from wlan0
$ ifconfig -a
enp1s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.110 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 fe80::f2ae:7543:fb54:a383 prefixlen 64 scopeid 0x20<link>
ether 3c:52:82:99:88:9e txqueuelen 1000 (Ethernet)
RX packets 80948 bytes 110611689 (110.6 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 42284 bytes 4334915 (4.3 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Loopback Local)
RX packets 1920 bytes 177354 (177.3 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 1920 bytes 177354 (177.3 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlp2s0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
ether e4:42:a6:3b:0c:8b txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
$ sudo lshw -c network
*-network
descrição: Ethernet interface
produto: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
fabricante: Realtek Semiconductor Co., Ltd.
ID físico: 0
informações do barramento: pci@0000:01:00.0
nome lógico: enp1s0
versão: 15
serial: 3c:52:82:99:88:9e
tamanho: 1Gbit/s
capacidade: 1Gbit/s
largura: 64 bits
clock: 33MHz
capacidades: pm msi pciexpress msix bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuração: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8168h-2_0.0.2 02/26/15 ip=192.168.1.110 latency=0 link=yes multicast=yes port=MII speed=1Gbit/s
recursos: irq:128 porta de E/S:3000(tamanho=256) memória:e0204000-e0204fff memória:e0200000-e0203fff
*-network
descrição: Interface sem fio
produto: Wireless 7265
fabricante: Intel Corporation
ID físico: 0
informações do barramento: pci@0000:02:00.0
nome lógico: wlp2s0
versão: 59
serial: e4:42:a6:3b:0c:8b
largura: 64 bits
clock: 33MHz
capacidades: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuração: broadcast=yes driver=iwlwifi driverversion=4.13.0-37-generic firmware=29.610311.0 latency=0 link=no multicast=yes wireless=IEEE 802.11
recursos: irq:134 memória:e0100000-e0101fff
Eu desligaria o gerenciamento de energia do Wi-Fi e verificaria se conseguimos obter alguma energia TX do cartão, no terminal
sudo sed -i 's/wifi.powersave = 3/wifi.powersave = 2/' /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf
sudo iwconfig wlp2s0 txpower 20
systemctl restart network-manager.service