No network, no usb after kernel update in 14.04
Solution 1:
Had a similar issue after a kernel upgrade: no network, no usb (except the old kernel worked as before).
In this case the linux-image-extra
package for that kernel was not installed, so drivers were missing.
To check it's installed:
$ uname -r
4.4.0-45-generic
$ dpkg -l | grep '^ii' | grep `uname -r`
ii linux-headers-4.4.0-45-generic 4.4.0-45.66~14.04.1 i386
ii linux-image-4.4.0-45-generic 4.4.0-45.66~14.04.1 i386
ii linux-image-extra-4.4.0-45-generic 4.4.0-45.66~14.04.1 i386
If the linux-image-extra
package is missing in the list above install it with:
$ sudo apt-get install linux-image-extra-`uname -r`
Solution 2:
I have exactly the same issue. I run 14.04 on a 2016 XPS 13 Developer-Edition, and after this morning's update the network menu does not contain any wireless device. Wired connection is working fine.
As a workaround, after displaying the GRUB menu and booting into the previous kernel (3.19.0-64), the wireless works as before for me.
Possibly related questions here and here. The same issue has been reported on the Dell forum here. If someone has a forum account, please point them to the various reports on askubuntu. I tried to sign up, but failed. This should also be reported at launchpad.