It is possible this bug a duplicate of https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1813663. Please confirm by reviewing that bug to see if your conditions are similar. At your earliest convenience could you please try the 4.15.0-45 to it it resolves your issue?
-- 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/1814084 Title: The screen went black - had to restart. Have happened several times today.. Status in linux package in Ubuntu: Confirmed Bug description: The screen went black - had to restart. Have happened several times today.. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-4.15.0-44-generic 4.15.0-44.47 ProcVersionSignature: Ubuntu 4.15.0-44.47-generic 4.15.18 Uname: Linux 4.15.0-44-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: llk 1852 F.... pulseaudio CurrentDesktop: ubuntu:GNOME Date: Thu Jan 31 12:35:03 2019 HibernationDevice: RESUME=UUID=42fc63eb-406d-4733-b480-1ad666665586 InstallationDate: Installed on 2018-10-25 (98 days ago) InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725) MachineType: HP HP EliteBook 850 G5 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-44-generic root=UUID=beba2df7-1067-4875-bc5e-ae2e91661d24 ro quiet splash acpi_osi= vt.handoff=1 RelatedPackageVersions: linux-restricted-modules-4.15.0-44-generic N/A linux-backports-modules-4.15.0-44-generic N/A linux-firmware 1.173.2 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/18/2018 dmi.bios.vendor: HP dmi.bios.version: Q78 Ver. 01.03.00 dmi.board.name: 83B2 dmi.board.vendor: HP dmi.board.version: KBC Version 04.53.00 dmi.chassis.asset.tag: 5CG8398P9Y dmi.chassis.type: 10 dmi.chassis.vendor: HP dmi.modalias: dmi:bvnHP:bvrQ78Ver.01.03.00:bd07/18/2018:svnHP:pnHPEliteBook850G5:pvr:rvnHP:rn83B2:rvrKBCVersion04.53.00:cvnHP:ct10:cvr: dmi.product.family: 103C_5336AN HP EliteBook dmi.product.name: HP EliteBook 850 G5 dmi.sys.vendor: HP To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1814084/+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
