We can perform a "Reverse" bisect to identify the commit that fixes this bug in v4.19. We first need to identify the last bad kernel version and the first good kernel version.
Can you test the following kernels: v4.16 Final: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.16/ v4.17 Final: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.17/ v4.18 Final: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.18/ v4.19-rc1: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.19-rc1/ You don't have to test every kernel, just up until the first kernel that does not have the bug. Thanks in advance! ** Changed in: linux (Ubuntu Bionic) Status: Confirmed => In Progress -- 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/1788997 Title: rtl8723be wifi does not work under linux-modules- extra-4.15.0-33-generic Status in linux package in Ubuntu: In Progress Status in linux source package in Bionic: In Progress Bug description: 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.d/rtl8723be_options.conf doesn't help either; as a workaround an external wifi device (Gigaset USB Adapter 108) works. 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/controlC1: al 1234 F.... pulseaudio /dev/snd/controlC0: al 1234 F.... pulseaudio 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=/boot/vmlinuz-4.15.0-33-generic root=UUID=32ea87b7-f595-4137-a54b-55838586f720 ro quiet splash vt.handoff=1 ProcVersionSignature: Ubuntu 4.15.0-33.36-generic 4.15.18 RelatedPackageVersions: linux-restricted-modules-4.15.0-33-generic N/A linux-backports-modules-4.15.0-33-generic N/A 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.asset.tag: Base Board Asset Tag dmi.board.name: 8137 dmi.board.vendor: Hewlett-Packard dmi.board.version: 99.02 dmi.chassis.asset.tag: Chassis Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: Hewlett-Packard dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnInsyde:bvrF.02:bd04/01/2015:svnHewlett-Packard:pnHPNotebook:pvrType1ProductConfigId:rvnHewlett-Packard:rn8137:rvr99.02:cvnHewlett-Packard:ct10:cvrChassisVersion: dmi.product.family: 103C_5335KV G=N L=CON B=HP dmi.product.name: HP Notebook dmi.product.version: Type1ProductConfigId dmi.sys.vendor: Hewlett-Packard To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1788997/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
