Can't get wifi to work on Ubuntu 16.04 with Intel wireless 7260 (rev c3)

Question

I am new to using Ubuntu. I dual booted my HP laptop with Windows 10 and Ubuntu 16.04. I am unable to see any wireless networks on Ubuntu, but it works perfectly if I use a wired connection. My network controller is an Intel 7260 (rev 3). When I check "Software & Updates" my wireless driver does not show up. Any suggestions as to how I should proceed?

Running

lspci -nnk | grep 0280 -A2

produces the output:

09:00.0 Network controller [0280]: Intel Corporation Wireless 7260 [8086:08b1] (rev c3)
DeviceName: Intel Stone Peak 2 7260 ac 2x2 + BT4 LE Combo
Subsystem: Intel Corporation Dual Band Wireless-AC 7260 [8086:c070]

Running

rfkill list all

produces the output:

0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
1: acer-wireless: Wireless LAN
Soft blocked: yes
Hard blocked: no
2: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no

Running

dmesg | grep iwl

produces

[    6.101194] iwlwifi 0000:09:00.0: Direct firmware load for iwlwifi-7260-17.ucode failed with error -2
[    6.118974] iwlwifi 0000:09:00.0: loaded firmware version 16.242414.0 op_mode iwlmvm
[    6.191797] iwlwifi 0000:09:00.0: Detected Intel(R) Dual Band Wireless AC 7260, REV=0x144
[    6.191938] iwlwifi 0000:09:00.0: L1 Enabled - LTR Enabled
[    6.192203] iwlwifi 0000:09:00.0: L1 Enabled - LTR Enabled
[    6.428960] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'
[    6.430845] iwlwifi 0000:09:00.0 wlo1: renamed from wlan0
[   16.944519] iwlwifi 0000:09:00.0: L1 Enabled - LTR Enabled
[   16.944781] iwlwifi 0000:09:00.0: L1 Enabled - LTR Enabled
[   17.139952] iwlwifi 0000:09:00.0: L1 Enabled - LTR Enabled
[   17.140212] iwlwifi 0000:09:00.0: L1 Enabled - LTR Enabled

Solution 1

Newer Kernels with hardware enablement stack should solve this however intel has drivers available here :

https://www.intel.com/content/www/us/en/support/articles/000005511/network-and-i-o/wireless-networking.html

Solution 2

Run in terminal

sudo tee /etc/modprobe.d/blacklist-acer.conf <<< "blacklist acer_wmi"

and reboot.

Comments

[chili555]

Please edit your question to add the results of these terminal commands: lspci -nnk | grep 0280 -A2 also: rfkill list all and finally: dmesg | grep iwl My money is on rfkill!

[user6443519]

@chili555 I have added the results of these commands. I am not entirely sure how to interpret the results.

[user6443519]

I updated my software but there still aren't any wireless drivers in my Additional Drivers tab. Is there something I need to download manually?

[chili555]

Additional Drivers only installs Broadcom drivers. It will not help his/her Intel at all.

[user6443519]

I tried this and still no luck. However when I check rfkill list all it tells me that my Wireless LAN is now hard blocked (it wasn't before). Do I need to change this back? If so, how do i do that?

[Pilot6]

Run sudo rfkill unblock wireless.

[user6443519]

Interesting. After running sudo rfkill unblock wireless I now have wireless access.