I'm fairly new to Ubuntu and Linux in general. I'm using a Dell XPS 13" 7390 that shipped with 18.04 already installed. Upgraded from 18.04 to 19.10 through the GUI prompt, and after rebooting I no longer have Wi-Fi.
Here is the output of lspci -knn | grep Net -A3
:
55:02:00.0 Network controller [0280]: Intel Corporation Device [8086:2723] (rev 1a)
56: Subsystem: Bigfoot Networks, Inc. Device [1a56:1653]
57- Kernel modules: iwlwifi
58-03:00.0 PCI bridge [0604]: Intel Corporation JHL6540 Thunderbolt 3 Bridge (C step) [Alpine Ridge 4C 2016] [8086:15d3] (rev 02)
59- Kernel driver in use: pcieport
And this is the output of rfkill list
:
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
I also tried disabling 802.11n, but that didn't help.
Any help is appreciated!
Edits, with additional commands tried:
sudo modprobe iwlwifi
fails with the message modprobe: ERROR: could not insert 'iwlwifi': Exec format error
. Adding the --force
flag doesn't change that.
uname -r
(this is the Linux kernel version, right?) outputs/returns 4.15.0-1081-oem
.
modinfo iwlwifi | grep filename
prints filename: /lib/modules/4.15.0-1081-oem/updates/dkms/iwlwifi.ko
.
sudo dpkg -s backport-iwlwifi-dkms
outputs this:
Package: backport-iwlwifi-dkms
Status: install ok installed
Priority: optional
Section: kernel
Installed-Size: 9599
Maintainer: Ubuntu Developers <[email protected]>
Architecture: all
Version: 7906-0ubuntu4
Provides: iwlwifi-modules
Depends: dkms (>= 2.1.0.0), libc6-dev | libc-dev
Description: iwlwifi driver backport in DKMS format
Intel works with periodic releases of the iwlwifi driver that are
tested with a specific combination of components such as firmware and
hostap. These releases can be seen as snapshots of the development
trees (including upstream) that can be used on older kernels.
.
This package provides iwlwifi modules built from iwlwifi-public
defconfig based on upstream master branch.
Original-Maintainer: You-Sheng Yang <[email protected]>
Homepage: https://gitlab.com/vicamo/backport-iwlwifi-dkms
Modaliases: cfg80211(net-pf-16-proto-16-family-nl80211), iwlwifi(pci:v00008086d00007AF0sv*sd00000A10bc*sc*i*,
The Modaliases:
stuff continues for quite a while (total file size was around 32kb).
dmesg | grep iwl
doesn't print anything either.
sudo modprobe iwlwifi && dmesg | grep iwl
Welcome to Ask Ubuntu.sudo modprobe iwlwifi
fails.uname -r
as well as:modinfo iwlwifi | grep filename
sudo dpkg -s backport-iwlwifi-dkms
I suspect that it is installed and that we should remove it.