RTL8822BE WiFi Disabled in Kernel 4.18.0-12
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Fix Released
|
Undecided
|
Kai-Heng Feng | ||
Bionic |
Fix Released
|
Medium
|
Unassigned | ||
Cosmic |
Fix Released
|
Medium
|
Unassigned | ||
Disco |
Fix Released
|
Undecided
|
Kai-Heng Feng |
Bug Description
===SRU Justification===
[Impact]
Realtek 8822be doesn't work under kernel lockdown.
[Fix]
Add r8822be.ko to signature-
when lockdown is enabled.
[Test]
Since I can't signed the kernel so it's not tested.
[Regression Potential]
Low. The driver is maintained by a Realtek guy, so bugs are actually
getting fixed.
===Original Bug Report===
Received kernel patch 4.18.0-12 today on my machine. On reboot my WiFi appears to be unavailable.
lspci still recognises the installed RTL8822BE card and a reboot back to the previous kernel version (4.18.0-11) seems to resolve the problem.
We tried some debugging in the IRC channel and didn't get very far. The r8822be module alias is intact, trying to modprobe it or insert results in a "operation not permitted" error. Modprobing mac80211 and cfg80211 which r8822be depends on did not seem to help.
KMod Lists for -12 and -11 kernels:
https:/
`ls -latr /lib/modules/
https:/
ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: linux-image-
ProcVersionSign
Uname: Linux 4.18.0-11-generic x86_64
NonfreeKernelMo
ApportVersion: 2.20.10-0ubuntu13.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
/dev/snd/
CurrentDesktop: KDE
Date: Mon Dec 3 19:27:16 2018
InstallationDate: Installed on 2018-11-10 (22 days ago)
InstallationMedia: Kubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.2)
MachineType: LENOVO 90H90015UK
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=
RelatedPackageV
linux-
linux-
linux-firmware 1.175.1
SourcePackage: linux
StagingDrivers: r8822be
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/15/2018
dmi.bios.vendor: LENOVO
dmi.bios.version: O3FKT26A
dmi.board.name: 36E1
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40709 WIN 3259620440547
dmi.chassis.type: 3
dmi.chassis.vendor: LENOVO
dmi.chassis.
dmi.modalias: dmi:bvnLENOVO:
dmi.product.family: Legion Y720T-34ASU
dmi.product.name: 90H90015UK
dmi.product.sku: LENOVO_
dmi.product.
dmi.sys.vendor: LENOVO
CVE References
Changed in linux (Ubuntu): | |
assignee: | nobody → Kai-Heng Feng (kaihengfeng) |
description: | updated |
Changed in linux (Ubuntu Disco): | |
status: | Confirmed → Fix Committed |
Changed in linux (Ubuntu Bionic): | |
status: | New → Triaged |
Changed in linux (Ubuntu Cosmic): | |
status: | New → Triaged |
Changed in linux (Ubuntu Bionic): | |
importance: | Undecided → Medium |
Changed in linux (Ubuntu Cosmic): | |
importance: | Undecided → Medium |
Changed in linux (Ubuntu Bionic): | |
status: | Triaged → Fix Committed |
Changed in linux (Ubuntu Cosmic): | |
status: | Triaged → Fix Committed |
tags: |
added: verification-done-bionic removed: verification-needed-bionic |
tags: | added: cscc |
This change was made by a bot.