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Today I have installed Ubuntu 18.04 LTS on a brand new computer and while installation went smooth, I can't connect to the Internet via WiFi. Firstly, I just thought it is a matter of enabling the WiFi manually, so I went to the settings and saw a notice: "No Wi-Fi Adapter Found". I did some googling and tried to perform all the steps described here, but it still doesn't work.

The lspci -knn | grep Net -A3; rfkill list command returns:

00:14.3 Network controller [0280]: Intel Corporation Wireless-AC 9560 [Jefferson Peak] [8086:a370] (rev 10)
    Subsystem: Intel Corporation Device [8086:0034]
    Kernel driver in use: iwlwifi
    Kernel modules: iwlwifi, wl
0: ideapad_wlan: Wireless LAN
    Soft blocked: no
    Hard blocked: yes
1: ideapad_bluetooth: Bluetooth
    Soft blocked: no
    Hard blocked: yes
2: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no
3: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no

And lshw -C network returns:

  *-network DISABLED        
       description: Wireless interface
       product: Wireless-AC 9560 [Jefferson Peak]
       vendor: Intel Corporation
       physical id: 14.3
       bus info: pci@0000:00:14.3
       logical name: wlp0s20f3
       version: 10
       serial: 0c:dd:24:2c:af:83
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=iwlwifi driverversion=5.0.0-23-generic firmware=43.95eb4e97.0 latency=0 link=no multicast=yes wireless=IEEE 802.11
       resources: irq:16 memory:b4518000-b451bfff
  *-network
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:07:00.0
       logical name: enp7s0
       version: 15
       serial: 98:fa:9b:a0:b0:cc
       size: 10Mbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 duplex=half firmware=rtl8168h-2_0.0.2 02/26/15 latency=0 link=no multicast=yes port=MII speed=10Mbit/s
       resources: irq:17 ioport:3000(size=256) memory:b4304000-b4304fff memory:b4300000-b4303fff
  *-network
       description: Ethernet interface
       physical id: 3
       logical name: enp0s20f0u2
       serial: 12:7f:41:92:a5:de
       capabilities: ethernet physical
       configuration: broadcast=yes driver=rndis_host driverversion=22-Aug-2005 firmware=RNDIS device ip=192.168.42.47 link=yes multicast=yes

What can I do more to make things work?

Eliah Kagan
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jakes
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1 Answers1

2

Run in a terminal

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

and reboot.

Explanation:

As you can see the wireless device is "hardware blocked" by rfkill.

0: ideapad_wlan: Wireless LAN
    Soft blocked: no
    Hard blocked: yes

New Ideapad laptops don't have a hardware wireless switch, and the ideapad_laptop kernel module considers a switch to be off.

So we disable the module, and Wi-Fi works.

Kernel developers add new laptop models to a list that need a quirk for the module. But new models appear faster than they are added.

If you are interested, you can send a patch upstream ;-)

Pilot6
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