** Also affects: linux (Ubuntu Bionic)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Cosmic)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Disco)
Importance: Undecided
Assignee: Kai-Heng Feng (kaihengfeng)
Status: Confirmed
** Changed in: linux (Ubuntu Disco)
Status: Confirmed => Fix Committed
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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1806472
Title:
RTL8822BE WiFi Disabled in Kernel 4.18.0-12
Status in linux package in Ubuntu:
Fix Committed
Status in linux source package in Bionic:
New
Status in linux source package in Cosmic:
New
Status in linux source package in Disco:
Fix Committed
Bug description:
===SRU Justification===
[Impact]
Realtek 8822be doesn't work under kernel lockdown.
[Fix]
Add r8822be.ko to signature-inclusion, so it can be signed and be loaded
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://paste.ubuntu.com/p/pwx5mKszVt/
`ls -latr /lib/modules/4.18.0-12-*/ ; grep -i B822
/lib/modules/4.18.0-12-*/modules.alias` :
https://paste.ubuntu.com/p/5zcCbXyM5g/
ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: linux-image-4.18.0-11-generic 4.18.0-11.12
ProcVersionSignature: Ubuntu 4.18.0-11.12-generic 4.18.12
Uname: Linux 4.18.0-11-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.10-0ubuntu13.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: callum 2989 F.... pulseaudio
/dev/snd/controlC0: callum 2989 F.... pulseaudio
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=/boot/vmlinuz-4.18.0-11-generic
root=UUID=d5f81e09-382c-4759-8a6d-2503fe6959b4 ro quiet splash vt.handoff=1
RelatedPackageVersions:
linux-restricted-modules-4.18.0-11-generic N/A
linux-backports-modules-4.18.0-11-generic N/A
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.version: None
dmi.modalias:
dmi:bvnLENOVO:bvrO3FKT26A:bd06/15/2018:svnLENOVO:pn90H90015UK:pvrLegionY720T-34ASU:rvnLENOVO:rn36E1:rvrSDK0J40709WIN3259620440547:cvnLENOVO:ct3:cvrNone:
dmi.product.family: Legion Y720T-34ASU
dmi.product.name: 90H90015UK
dmi.product.sku: LENOVO_MT_90H9_BU_LENOVO_FM_Legion Y720T-34ASU
dmi.product.version: Legion Y720T-34ASU
dmi.sys.vendor: LENOVO
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