Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.19 kernel[0].
If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.19-rc4 ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- 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/1793022 Title: Cannot connect to wifi after kernel update 4.15.0-29 to 4.15.0-34 Status in linux package in Ubuntu: Incomplete Bug description: I experienced the same problem on two different Dell Laptops (an old dell 640m and a newer Dell E7450). After fresh install of Ubuntu 18.04.1 wifi and network work flawlessly but after routine kernel update (from 4.15.0-29.31 to 4.15.0-34.37) network manager correctly show wireless networks but cannot establish a connection. Rebooting with previous kernel (4.15.0-29) fix the problem and I had to set it as default in grub. Please find attached the report obtained running ubuntu-bug linux after booting the latest kernel. Bug symptoms look similar to those described for bug 1788997 but as far as I understand they do not seem related. --- ProblemType: Bug ApportVersion: 2.20.9-0ubuntu7.3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: mauro 1447 F.... pulseaudio /dev/snd/controlC0: mauro 1447 F.... pulseaudio CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 18.04 HibernationDevice: RESUME=UUID=5f99e622-4108-4ba0-88ab-fd8f80e7e47d InstallationDate: Installed on 2018-09-15 (1 days ago) InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725) MachineType: Dell Inc. Latitude E7450 Package: linux (not installed) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=it_IT.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-34-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=1 ProcVersionSignature: Ubuntu 4.15.0-34.37-generic 4.15.18 RelatedPackageVersions: linux-restricted-modules-4.15.0-34-generic N/A linux-backports-modules-4.15.0-34-generic N/A linux-firmware 1.173.1 Tags: bionic Uname: Linux 4.15.0-34-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 10/28/2015 dmi.bios.vendor: Dell Inc. dmi.bios.version: A08 dmi.board.name: 0D8H72 dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA08:bd10/28/2015:svnDellInc.:pnLatitudeE7450:pvr:rvnDellInc.:rn0D8H72:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.name: Latitude E7450 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1793022/+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
