The drivers in staging won't get loaded when lockdown is enabled to provide safety. There's a list to override behavior though.
The r8822be in its current form defaults to enable debugfs, which can be less secure as it exposes and extra interface to userspace. But we are not sure if the driver still works once the debugfs gets disabled, so please test this kernel: https://people.canonical.com/~khfeng/lp1806472/ Once we are sure r8822be still works when debugfs is disabled, we can include this fix to Cosmic. -- 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: Confirmed 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1806472/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : firstname.lastname@example.org Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp