Happy New Year, hopefully.

Earlier today I tried to update my kernel from 3.13xx to 4.2 in the hope of better performance on my computer. But after a restart I had no network. When i did ifconfig ethx/wlanx up it gave an error message. I had to remove the new kernel and reboot the old kernel to get the network back.

How do I keep the network drivers between kernels? Does not the dependencies hop along between kernels?

Perhaps a better question would be - what are the appropriate steps to install a kernel and keeping the drivers working between kernel-generations? If there is a manual I would read it, but I have not found Potters book of knowledge where all the magick Linux are collected in one large volume. In this case I would like to read the chapter x.x.x.IV Kernel Update do and do not.

  • How did you install the 4.2 kernel? Wired or wireless networking? What type of card? What driver?
    – fkraiem
    Dec 31, 2015 at 15:51
  • Have you confirmed it is a driver issue specifically (rather than, for example, a change in the interface naming convention)? What was the error message? Dec 31, 2015 at 15:53
  • What packages did you update? There are "lts" kernel upgrade packages, but I did a successful update of my 14.04 to 4.2.3 with just the kernel package and the firmware package. You need more than just the kernel package.
    – ubfan1
    Dec 31, 2015 at 16:12
  • Hi I did apt-cache search linux-image THEN sudo apt-get install linux-image-4.2.0-22-generic I will have to do another update to see the error message:) That solution came from another place on the internet. Perhaps from another thread on this site. Wireless update I cannot give you new line
    – no mouse
    Dec 31, 2015 at 16:22
  • WIRELESS 02:00.0 Network controller: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter (rev 01) ETHERNET 01:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM57786 Gigabit Ethernet PCIe (rev 01) ______I only updated the kernel and no other packages because the network has worked when the kernels have been updated before within the 3.-branch of kernels ____when the kernels have been updated automatically they have always been the GENERIC
    – no mouse
    Dec 31, 2015 at 16:28

1 Answer 1


That solved the problem.

Install linux-image-generic-lts-wily, this will 1) install linux-image-extra-4.2.0-22-generic, which may contain the driver for your wifi card, and 2) ensure you get all updates for the 4.2 series of kernels. – fkraiem 3 hours ago

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.

Not the answer you're looking for? Browse other questions tagged or ask your own question.