Please find the required apport information. Trying to send the
information with the -34 kernel loaded I also realized the following:
Wifi:
- wifi cannot connect to my APs (I tested two of them)
- a connection to a nearby wifi hotspot login page (unencrypted) can be
established and a login page is displayed
- a connection to the WPA2 PSK Android hotspot I created from my Android mobile
also works (this is the one I used to send the apport report)
Ethernet:
- I also tried to connect an ethernet cable but no wired connection is detected
(like the cable is not inserted). This also works correctly with 4.15.0-29
kernel.
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1793022
Title:
Cannot connect to wifi after kernel update 4.15.0-29 to 4.15.0-34
Status in linux package in Ubuntu:
Confirmed
Bug description:
I experienced the same problem on two different Dell Laptops (an old dell
640m and a newer Dell E7450). After fresh install of Ubuntu 18.04.1 wifi and
network work flawlessly but after routine kernel update (from 4.15.0-29.31 to
4.15.0-34.37) network manager correctly show wireless networks but cannot
establish a connection. Rebooting with previous kernel (4.15.0-29) fix the
problem and I had to set it as default in grub. Please find attached the report
obtained running ubuntu-bug linux after booting the latest kernel. Bug symptoms
look similar to those described for bug 1788997 but as far as I understand they
do not seem related.
---
ProblemType: Bug
ApportVersion: 2.20.9-0ubuntu7.3
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: mauro 1447 F.... pulseaudio
/dev/snd/controlC0: mauro 1447 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
DistroRelease: Ubuntu 18.04
HibernationDevice: RESUME=UUID=5f99e622-4108-4ba0-88ab-fd8f80e7e47d
InstallationDate: Installed on 2018-09-15 (1 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64
(20180725)
MachineType: Dell Inc. Latitude E7450
Package: linux (not installed)
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=it_IT.UTF-8
SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-34-generic
root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=1
ProcVersionSignature: Ubuntu 4.15.0-34.37-generic 4.15.18
RelatedPackageVersions:
linux-restricted-modules-4.15.0-34-generic N/A
linux-backports-modules-4.15.0-34-generic N/A
linux-firmware 1.173.1
Tags: bionic
Uname: Linux 4.15.0-34-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 10/28/2015
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A08
dmi.board.name: 0D8H72
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvrA08:bd10/28/2015:svnDellInc.:pnLatitudeE7450:pvr:rvnDellInc.:rn0D8H72:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E7450
dmi.sys.vendor: Dell Inc.
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