rtl8723be wifi does not work under linux-modules-extra-4.15.0-33-generic
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Confirmed
|
Medium
|
Unassigned | ||
Bionic |
Fix Released
|
Medium
|
Unassigned |
Bug Description
=== SRU Justification ===
[Impact]
Realtek 8723be's ant_sel parameter stops working since 4.15.0-33.36.
[Fix]
The commit that causes the regression works in mainline, so there are
some functional dependencies are not in 4.15.
Finding those dependencies can be hard since I don't have the hardware
to test with, also pulling new commits may cause new regression. So the
safest way to deal with this bug is to simply revert the regression
commit.
[Test]
User confirmed reverting the commit can fix the issue.
[Regression Potential]
Low. Realtek 8723be works without this commit.
=== Original Bug Report ===
When starting Xubuntu 18.04.1 LTS on a laptop HP 1S-af023ng with kernel 4.15.0-32.35 amd64, wifi via rtl8723be works OK.
Using actual 4.15.0-33.36 amd64 instead, rtl8723be doesn't find any wifi networks and thus there is no connection. Changing the antenna setup in /etc/modprobe.
The expectation is that wifi through rtl8723be will still work under 4.15.0-33.36 as it did previously.
---
ProblemType: Bug
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
/dev/snd/
CurrentDesktop: XFCE
DistroRelease: Ubuntu 18.04
EcryptfsInUse: Yes
InstallationDate: Installed on 2018-05-27 (89 days ago)
InstallationMedia: Xubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
MachineType: Hewlett-Packard HP Notebook
Package: linux (not installed)
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=
ProcVersionSign
RelatedPackageV
linux-
linux-
linux-firmware 1.173.1
Tags: bionic
Uname: Linux 4.15.0-33-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 04/01/2015
dmi.bios.vendor: Insyde
dmi.bios.version: F.02
dmi.board.
dmi.board.name: 8137
dmi.board.vendor: Hewlett-Packard
dmi.board.version: 99.02
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.chassis.
dmi.modalias: dmi:bvnInsyde:
dmi.product.family: 103C_5335KV G=N L=CON B=HP
dmi.product.name: HP Notebook
dmi.product.
dmi.sys.vendor: Hewlett-Packard
affects: | ubuntu → linux (Ubuntu) |
Changed in linux (Ubuntu): | |
importance: | Undecided → Medium |
status: | Confirmed → Incomplete |
status: | Incomplete → Triaged |
Changed in linux (Ubuntu Bionic): | |
importance: | Undecided → Medium |
status: | New → Triaged |
Changed in linux (Ubuntu): | |
status: | Triaged → In Progress |
Changed in linux (Ubuntu Bionic): | |
status: | Triaged → In Progress |
Changed in linux (Ubuntu): | |
assignee: | nobody → Joseph Salisbury (jsalisbury) |
Changed in linux (Ubuntu Bionic): | |
assignee: | nobody → Joseph Salisbury (jsalisbury) |
tags: | added: kernel-fixed-upstream |
Changed in linux (Ubuntu Bionic): | |
status: | In Progress → Confirmed |
Changed in linux (Ubuntu Bionic): | |
status: | In Progress → Confirmed |
Changed in linux (Ubuntu): | |
status: | In Progress → Confirmed |
Changed in linux (Ubuntu Bionic): | |
assignee: | Joseph Salisbury (jsalisbury) → nobody |
Changed in linux (Ubuntu): | |
assignee: | Joseph Salisbury (jsalisbury) → nobody |
description: | updated |
Changed in linux (Ubuntu Bionic): | |
status: | Confirmed → Fix Committed |
tags: |
added: verification-failed-bionic removed: verification-needed-bionic |
tags: | added: cscc |
This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1788997
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.