Wifi no funciona en ubuntu fresco 16.04

En primer lugar, lo siento si este hilo está duplicado con otro, pero no encontré una solución para el problema.

Así que compré una nueva computadora portátil (Lenovo Y520) y configuré el arranque dual Win10 con Ubuntu 16.04 y la conexión inalámbrica no funciona para ubuntu (LAN funciona).

ifconfig

enp4s0    Link encap:Ethernet  HWaddr c8:5b:76:da:32:ba  
      inet addr:192.168.0.102  Bcast:192.168.0.255  Mask:255.255.255.0
      inet6 addr: fe80::62bc:4b27:ec0f:1d9c/64 Scope:Link
      UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
      RX packets:18584 errors:0 dropped:0 overruns:0 frame:0
      TX packets:12706 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:1000 
      RX bytes:20071392 (20.0 MB)  TX bytes:1500456 (1.5 MB)

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:1849 errors:0 dropped:0 overruns:0 frame:0
      TX packets:1849 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:1 
      RX bytes:200236 (200.2 KB)  TX bytes:200236 (200.2 KB)

.

iwconfig

wlp3s0    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

enp4s0    no wireless extensions.

lo        no wireless extensions.

Ejecuté algunos comandos que se encuentran en otros hilos.

sudo lshw -class network


*-network               
   description: Wireless interface
   product: Intel Corporation
   vendor: Intel Corporation
   physical id: 0
   bus info: pci@0000:03:00.0
   logical name: wlp3s0
   version: 78
   serial: 00:28:f8:69:15:13
   width: 64 bits
   clock: 33MHz
   capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
   configuration: broadcast=yes driver=iwlwifi driverversion=4.8.14-040814-generic firmware=22.361476.0 latency=0 link=no multicast=yes wireless=IEEE 802.11
   resources: irq:332 memory:a4200000-a4201fff
*-network
   description: Ethernet interface
   product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
   vendor: Realtek Semiconductor Co., Ltd.
   physical id: 0
   bus info: pci@0000:04:00.0
   logical name: enp4s0
   version: 10
   serial: c8:5b:76:da:32:ba
   size: 100Mbit/s
   capacity: 1Gbit/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 1000bt 1000bt-fd autonegotiation
   configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8168g-3_0.0.1 04/23/13 ip=192.168.0.102 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s
   resources: irq:322 ioport:4000(size=256) memory:a4104000-a4104fff memory:a4100000-a4103fff

.

rfkill list

0: ideapad_wlan: Wireless LAN
Soft blocked: no
Hard blocked: yes
1: ideapad_bluetooth: Bluetooth
Soft blocked: yes
Hard blocked: yes
2: hci0: Bluetooth
Soft blocked: yes
Hard blocked: no
3: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no

.

lspci -nnk | grep 0280 -A2

03:00.0 Network controller [0280]: Intel Corporation Device [8086:24fd] (rev 78)
Subsystem: Intel Corporation Device [8086:1010]
Kernel driver in use: iwlwifi

Cosas que he probado y no funcionó.

* sudo rfkill unblock wifi
* Additional Drivers -> Not showing wifi driver
* restart network-manager service
* http://askubuntu.com/a/859263

Correr en una terminal

sudo tee /etc/modprobe.d/blacklist-ideapad.conf <<< "blacklist ideapad_laptop"

y reiniciar. Esto debería desbloquear tu Wi-Fi.