Ubuntu 14.04 reports no wireless card with Intel Wireless 7260

**jeremy31** · August 31st, 2014

Originally Posted by chili555

A Google for your device:...shows but one interesting post: http://ubuntuforums.org/showthread.php?t=2238735

To cut to the conclusion, the poster says:If you'd care to experimentally; no, highly experimentally edit the .c code and compile your own driver, I will be happy to get out my plasma cutter, hammer and other tools of destruction.

If, on the other hand, you'd care to buy a fully supported USB wireless, consult the many threads on this forum on that subject.

EDIT: If Jeremy wants to attempt it, please proceed.

-------------------------
Note to Chili: pcie/drv.c around line 334 in backports 3.16-1.

Have fun, I have other projects

**chili555** · August 31st, 2014

First of all, this is purely experimental. It may work well; it may work partially or it may not work at all. We never know until we try.

First, download this file to your desktop: https://www.kernel.org/pub/linux/ker...-3.16-1.tar.xz Right-click it and select 'Extract Here.' Navigate to the directory Desktop/backports-3.16-1/drivers/net/wireless/pcie and open the file drv.c with gedit, nano, leafpad or any text editor. Scroll down to line 334. We are going to add a new line below it to add your device. Change this section:

Code:

        {IWL_PCI_DEVICE(0x08B1, 0xC02A, iwl7260_2n_cfg)},
	{IWL_PCI_DEVICE(0x08B2, 0xC220, iwl7260_2n_cfg)},
	{IWL_PCI_DEVICE(0x08B1, 0xC420, iwl7260_2n_cfg)},

...to add your device. I don't know if your device is an N, a 2N or a 2AC, so all we can do it take a guess, unless you know some other details about it. My wild guess is 2AC. So we add a new line:

Code:

        {IWL_PCI_DEVICE(0x08B1, 0xC02A, iwl7260_2n_cfg)},
	{IWL_PCI_DEVICE(0x08B2, 0xC220, iwl7260_2n_cfg)},
	{IWL_PCI_DEVICE(0x08B1, 0xC420, iwl7260_2n_cfg)},
        {IWL_PCI_DEVICE(0x08B1, 0x4C70, iwl7260_2ac_cfg)},

Spacing, caps, brackets, etc. are crucial and must be exact. Type carefully, proofread twice, save and close the text editor.

Now we compile the driver.

Code:

sudo apt-get update
sudo apt-get install linux-headers-generic build-essential
cd ~/Desktop/backports-3.16-1
make defconfig-iwlwifi
make
sudo make install

The driver requires firmware:

Code:

$ modinfo drivers/net/wireless/iwlwifi/iwlwifi.ko 
filename:       /home/chili/Downloads/backports-3.16-1/drivers/net/wireless/iwlwifi/iwlwifi.ko
version:        backported from Linux (v3.16-0-g19583ca) using backports v3.16-1-0-g87df966
license:        GPL
author:         Copyright(c) 2003- 2014 Intel Corporation <ilw@linux.intel.com>
version:        in-tree:d
description:    Intel(R) Wireless WiFi driver for Linux
firmware:       iwlwifi-100-5.ucode
firmware:       iwlwifi-1000-5.ucode
firmware:       iwlwifi-135-6.ucode
firmware:       iwlwifi-105-6.ucode
firmware:       iwlwifi-2030-6.ucode
firmware:       iwlwifi-2000-6.ucode
firmware:       iwlwifi-5150-2.ucode
firmware:       iwlwifi-5000-5.ucode
firmware:       iwlwifi-6000g2b-6.ucode
firmware:       iwlwifi-6000g2a-5.ucode
firmware:       iwlwifi-6050-5.ucode
firmware:       iwlwifi-6000-4.ucode
firmware:       iwlwifi-7265-9.ucode
firmware:       iwlwifi-3160-9.ucode
firmware:       iwlwifi-7260-9.ucode
firmware:       iwlwifi-8000-8.ucode

If your linux-firmware package is fully updated, you probably have it; check:

Code:

ls /lib/firmware | grep 7260

If the backports package built without error and you have the firmware, you ought to be able to load the driver and have wireless (!!!).

Code:

sudo modprobe iwlwifi
iwconfig

Are there any errors or signs of distress in the log?

Code:

dmesg | grep iwl

Let us know your results; we will probably have one additional step.

**Trekkin** · August 31st, 2014

That appears to have worked perfectly! I now have wifi. I will watch for any disconnects or other abnormal behavior over the next few hours, though.

Thank you so much!

**chili555** · August 31st, 2014

Awesome! I suspect you will have helped some searchers.

You have compiled the driver for your current kernel only. When a newer kernel, known in Ubuntu World as linux-image, is installed by Update Manager, re-compile:

Code:

cd ~/Desktop/backports-3.16-1
make clean
make defconfig-iwlwifi
make
sudo make install

Please retain the files and these instructions for that time.

CAUTION to searchers: Unless your device is the exact same, Intel Corporation Wireless 7260 [8086:08b1] (rev cb)
Subsystem: Intel Corporation Device [8086:4c70], then this process is not the solution to your problem. These are not the droids you are looking for. Move along!

**User-007** · October 31st, 2014

Thanks a lot, Chili555! This guide solved my problem with Asus TP300LA. Now having wireless working, without problems so far. Would it be possible to get this fix into mainstream?

User 007

**chili555** · October 31st, 2014

I just checked my 14.10 installation and it hasn't made it so far. It would be helpful to file a bug report: https://bugs.launchpad.net/ubuntu/+s...linux/+filebug

The key thing to report is that, although many other subsystem ids are included in iwlwifi, yours, 8086:4c70, is not. If you wish, feel free to refer to this thread in your report.

**jeremy31** · October 31st, 2014

Might be worth sending an email to ilw@linux.intel.com

**User-007** · October 31st, 2014

I sent a message to ilw@linux.intel.com. Hope they will fix the issue in the future.

Thank you!

**User-007** · November 3rd, 2014

I received a quick response from Intel. The problem has been already fixed in upstream kernels. I tested with 3.18-rc1 and everything with Wifi was OK. So everyone facing this problem, go to https://wiki.ubuntu.com/Kernel/Mainl...MainlineBuilds ang grab yours from upstream archive.