Public bug reported: 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 ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug cosmic staging ** Attachment added: "DMESG output of booting to kernel 4.18.0-12" https://bugs.launchpad.net/bugs/1806472/+attachment/5218636/+files/dmesg%202 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1806472 Title: RTL8822BE WiFi Disabled in Kernel 4.18.0-12 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1806472/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
