Since that time, I determined that the cause of this problem is that I have two kernels for each kernel release: lowlatency and generic. The upgrade puts the headers in for generic whether I am running lowlatency when the silent upgrade takes place or do the upgrade in a terminal window by hand. Therefore, the upgrade does not check to see if I have the same release in both lowlatency and generic. I have to remember to install the headers for lowlatency after any kernel update. Since the header update includes virtualbox updates I analyze that this solves the failed WiFi and Virtualbox corruption I found before I realized the headers were not up to date. The failed WiFi and Virtualbox were disguised because I could boot partially with previous low latency headers but not correctly. The ethernet hid the WiFi problem.
I recommend that upgrades for kernels and headers be scripted for when both lowlatency and generic (when present). -- 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/1894867 Title: WiFi works on kernel version LL 115 but not LL 117 Status in linux package in Ubuntu: Confirmed Bug description: Running on Linux Kubuntu "latest" version, silent install notified me that re-boot is needed to install latest updates. I re-booted, and suddenly had no WiFi. I then used an Ethernet connection to ensure that Internet was still functional. I rebooted to kernel low latency 115 and WiFi returned (disconnected Ethernet before reboot). I then rebooted again to kernel low latency version 117, with Ethernet, and ran "$ ubuntu-bug linux" which gave me: QXcbConnection: XCB error: 3 (BadWindow), sequence: 1098, resource id: 25174330, major code: 40 (TranslateCoords), minor code: 0 and opened this bug report in LL 117 using Ethernet connection. I would have included LL 115 report for comparison, but there is no bug "save" option I know of. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-4.15.0-117-lowlatency 4.15.0-117.118 ProcVersionSignature: Ubuntu 4.15.0-117.118-lowlatency 4.15.18 Uname: Linux 4.15.0-117-lowlatency x86_64 ApportVersion: 2.20.9-0ubuntu7.17 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC2: dad 4716 F.... pulseaudio /dev/snd/controlC0: dad 4716 F.... pulseaudio CurrentDesktop: KDE Date: Tue Sep 8 11:30:04 2020 HibernationDevice: RESUME=UUID=540c3467-7148-463e-858a-cb1435e4503f IwConfig: lo no wireless extensions. enp9s0 no wireless extensions. MachineType: Dell Inc. Inspiron 1545 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-117-lowlatency root=UUID=27aec088-dbbf-44f9-9c61-ab3c933e054e ro quiet splash vt.handoff=1 RelatedPackageVersions: linux-restricted-modules-4.15.0-117-lowlatency N/A linux-backports-modules-4.15.0-117-lowlatency N/A linux-firmware 1.173.19 RfKill: SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/17/2009 dmi.bios.vendor: Dell Inc. dmi.bios.version: A10 dmi.board.name: 0G848F dmi.board.vendor: Dell Inc. dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA10:bd07/17/2009:svnDellInc.:pnInspiron1545:pvr:rvnDellInc.:rn0G848F:rvr:cvnDellInc.:ct8:cvr: dmi.product.name: Inspiron 1545 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1894867/+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
