Exact steps to upgrade my kernel to fix wireless problem.

[Somelauw]

I'm having trouble with my wireless. My wireless driver tends to disconnect soon after having connected to a network and won't reconnect until I reboot.
My wireless card is Wireless Intel Dual Band Wireless 7260AC.

So far I heard that these problems seem to be fixed in a driver that comes with linux kernel 3.13.2 or higher. Can someone give me the exact steps that are needed to upgrade my kernel?

[austin.texas]

How to Install and Upgrade to a New Kernel on Linux Mint
http://www.wikihow.com/Install-and-Upgr ... Linux-Mint

The reference is to kernel 3.10.4 but can be applied to any kernel.

EDIT:

by Monsta: Nice tutorial for Ubuntu-based Mints, nice way to do unpredictable things to your LMDE

OOPs, I missed the LMDE reference.

[Monsta]

How to Install and Upgrade to a New Kernel on Linux Mint
http://www.wikihow.com/Install-and-Upgr ... Linux-Mint

Nice tutorial for Ubuntu-based Mints, nice way to do unpredictable things to your LMDE.

[Somelauw]

In another thread someone recommended using a kernel from http://liquorix.net/ which is based on linux 3.16-2, which might be what I want since the version number clearly exceeds 3.13. I tried this kernel but it seems like it wasn't able to load its wireless module.

I copy-pasted the following messages from kern.log:

iwlwifi 0000:04:00.0: Direct firmware load failed with error -2
iwlwifi 0000:04:00.0: Falling back to user helper
iwlwifi 0000:04:00.0: request for firmware file 'iwlwifi-7260-9.ucode' failed.
iwlwifi 0000:04:00.0: Direct firmware load failed with error -2
iwlwifi 0000:04:00.0: Falling back to user helper
iwlwifi 0000:04:00.0: request for firmware file 'iwlwifi-7260-8.ucode' failed.
iwlwifi 0000:04:00.0: no suitable firmware found!

[Monsta]

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iwlwifi 0000:04:00.0: Direct firmware load failed with error -2
iwlwifi 0000:04:00.0: Falling back to user helper
iwlwifi 0000:04:00.0: request for firmware file 'iwlwifi-7260-9.ucode' failed.
iwlwifi 0000:04:00.0: Direct firmware load failed with error -2
iwlwifi 0000:04:00.0: Falling back to user helper
iwlwifi 0000:04:00.0: request for firmware file 'iwlwifi-7260-8.ucode' failed.
iwlwifi 0000:04:00.0: no suitable firmware found!

Maybe it simply can't find the firmware files?

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apt install firmware-iwlwifi

[Somelauw]

Maybe it simply can't find the firmware files?

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apt install firmware-iwlwifi

That didn't really do much

Reading package lists... Done
Building dependency tree
Reading state information... Done
firmware-iwlwifi is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

Running

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apt-cache show firmware-iwlwifi | grep 7260

displays the following:

* Intel Wireless 7260 rev 10 Bluetooth firmware 1.80.2.3.d patch (intel/ibt-hw-37.7.10-fw-1.80.2.3.d.bseq)
* Intel Wireless 7260 Bluetooth firmware generic patch (intel/ibt-hw-37.7.bseq)
* Intel Wireless 7260 firmware, version 22.0.7.0 (iwlwifi-7260-7.ucode)

[Monsta]

You can try getting a newer version of firmware-iwlwifi from Debian Testing then.

[Somelauw]

I installed (using a wired internet connection) the packages linux-image-3.16, firmware-iwlwifi and a new version of NetworkManager (including its dependencies) from unstable and got my wireless connection to work again.

So far everything seems to work using both the kernel from liquorix as the one from "unstable".
I'll let you know if any problems arise later.