We can perform a "Reverse" bisect to identify the commit that fixes this bug in 4.15. We first need to identify the last kernel version that had the bug and the first that did not. Can you try the following two kernels:
v4.14-rc1: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.14-rc1/ v4.15-rc1:http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.15-rc1/ ** Changed in: linux (Ubuntu) Importance: Undecided => High ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete ** Changed in: linux (Ubuntu) Status: Incomplete => Triaged ** Also affects: linux (Ubuntu Artful) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Artful) Status: New => Triaged ** Tags added: kernel-da-key needs-bisect ** Changed in: linux (Ubuntu Artful) Importance: Undecided => High ** Tags removed: needs-bisect ** Tags added: performing-bisect -- 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/1748675 Title: Laptop freezes seconds after displaying the login screen Status in linux package in Ubuntu: Triaged Status in linux source package in Artful: Triaged Bug description: My Dell Precision Laptop 5520 freezes seconds after displaying the login screen when using linux-image-4.13.0-32-generic (Includes 31, 30). Selecting 4.13.0-17-generic allows for stable operation. I am still currently installing the main line series and will report if the issue is resolved once that is installed. ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: linux-image-4.13.0-17-generic 4.13.0-17.20 ProcVersionSignature: Ubuntu 4.13.0-17.20-generic 4.13.8 Uname: Linux 4.13.0-17-generic x86_64 ApportVersion: 2.20.7-0ubuntu3.7 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/pcmC0D0p: rhianresnick 3057 F...m pulseaudio /dev/snd/controlC0: rhianresnick 3057 F.... pulseaudio CurrentDesktop: ubuntu:GNOME Date: Sat Feb 10 18:12:26 2018 DistributionChannelDescriptor: # This is a distribution channel descriptor # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor canonical-oem-somerville-trusty-amd64-osp1-20150720-0 HibernationDevice: RESUME=UUID=d22435f8-1e7b-46d7-b6bf-9722c30e05c1 InstallationDate: Installed on 2016-11-22 (445 days ago) InstallationMedia: Ubuntu 14.04 "Trusty" - Build amd64 LIVE Binary 20150720-04:06 MachineType: Dell Inc. Precision 5510 ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.13.0-17-generic.efi.signed root=UUID=5f8e45d9-71ed-4a72-9380-ac204117e9cd ro quiet splash RelatedPackageVersions: linux-restricted-modules-4.13.0-17-generic N/A linux-backports-modules-4.13.0-17-generic N/A linux-firmware 1.169.3 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 12/11/2017 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.6.1 dmi.board.name: 0N8J4R dmi.board.vendor: Dell Inc. dmi.board.version: A01 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.6.1:bd12/11/2017:svnDellInc.:pnPrecision5510:pvr:rvnDellInc.:rn0N8J4R:rvrA01:cvnDellInc.:ct9:cvr: dmi.product.family: To be filled by O.E.M. dmi.product.name: Precision 5510 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1748675/+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
