apport information ** Attachment added: "RfKill.txt" https://bugs.launchpad.net/bugs/1722269/+attachment/4983364/+files/RfKill.txt
-- 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/1722269 Title: No graphical boot with 4.4.0-96 and NVIDIA GeForce 840M Status in linux package in Ubuntu: Confirmed Bug description: My computer (using XUbuntu 16.04) boots and works normally with kernel 4.4.0-92 but upgrading to 4.4.0-96 prevents lightdm from starting. In fact, the GPU detection service fails. The problem also appears with proposed 4.4.0-97. I tested with mainline kernel 4.13. It boots to lightdm but it is difficult to exactly tell what happens as some modules for my hardware were not found/compiled/installed (as a result, I cannot connect to wifi with this kernel). GPU is GEForce 840M with proprietary nvidia 475 drivers (purged and reinstalled once). ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-92-generic 4.4.0-92.115 ProcVersionSignature: Ubuntu 4.4.0-92.115-generic 4.4.76 Uname: Linux 4.4.0-92-generic x86_64 NonfreeKernelModules: wl nvidia_drm nvidia_modeset nvidia ApportVersion: 2.20.1-0ubuntu2.10 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: yann 1476 F.... pulseaudio /dev/snd/controlC0: yann 1476 F.... pulseaudio CurrentDesktop: XFCE Date: Mon Oct 9 15:40:16 2017 HibernationDevice: RESUME=UUID=d967f5cb-08d3-468b-b161-2e63743f0ccd InstallationDate: Installed on 2016-07-18 (448 days ago) InstallationMedia: Xubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) MachineType: Dell Inc. Latitude E7450 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-92-generic.efi.signed root=UUID=4ad8fadb-26cb-4b9c-9d08-ae6b7f41d91f ro RelatedPackageVersions: linux-restricted-modules-4.4.0-92-generic N/A linux-backports-modules-4.4.0-92-generic N/A linux-firmware 1.157.12 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/05/2017 dmi.bios.vendor: Dell Inc. dmi.bios.version: A16 dmi.board.name: 0NC6G7 dmi.board.vendor: Dell Inc. dmi.board.version: A01 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA16:bd05/05/2017:svnDellInc.:pnLatitudeE7450:pvr:rvnDellInc.:rn0NC6G7:rvrA01:cvnDellInc.:ct9:cvr: dmi.product.name: Latitude E7450 dmi.sys.vendor: Dell Inc. --- ApportVersion: 2.20.1-0ubuntu2.10 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: yann 1438 F.... pulseaudio /dev/snd/controlC1: yann 1438 F.... pulseaudio CurrentDesktop: XFCE DistroRelease: Ubuntu 16.04 HibernationDevice: RESUME=UUID=d967f5cb-08d3-468b-b161-2e63743f0ccd InstallationDate: Installed on 2016-07-18 (450 days ago) InstallationMedia: Xubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) MachineType: Dell Inc. Latitude E7450 NonfreeKernelModules: wl Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-97-generic.efi.signed root=UUID=4ad8fadb-26cb-4b9c-9d08-ae6b7f41d91f ro ProcVersionSignature: Ubuntu 4.4.0-97.120-generic 4.4.87 RelatedPackageVersions: linux-restricted-modules-4.4.0-97-generic N/A linux-backports-modules-4.4.0-97-generic N/A linux-firmware 1.157.12 Tags: xenial Uname: Linux 4.4.0-97-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dialout dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 05/05/2017 dmi.bios.vendor: Dell Inc. dmi.bios.version: A16 dmi.board.name: 0NC6G7 dmi.board.vendor: Dell Inc. dmi.board.version: A01 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA16:bd05/05/2017:svnDellInc.:pnLatitudeE7450:pvr:rvnDellInc.:rn0NC6G7:rvrA01:cvnDellInc.:ct9:cvr: dmi.product.name: Latitude E7450 dmi.sys.vendor: Dell Inc. --- ApportVersion: 2.20.1-0ubuntu2.10 Architecture: amd64 DistroRelease: Ubuntu 16.04 HibernationDevice: RESUME=UUID=d967f5cb-08d3-468b-b161-2e63743f0ccd InstallationDate: Installed on 2016-07-18 (460 days ago) InstallationMedia: Xubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) MachineType: Dell Inc. Latitude E7450 NonfreeKernelModules: nvidia_uvm wl nvidia_drm nvidia_modeset nvidia Package: linux (not installed) ProcEnviron: TERM=linux PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=fr_FR.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-98-generic.efi.signed root=UUID=4ad8fadb-26cb-4b9c-9d08-ae6b7f41d91f ro ProcVersionSignature: Ubuntu 4.4.0-98.121-generic 4.4.90 RelatedPackageVersions: linux-restricted-modules-4.4.0-98-generic N/A linux-backports-modules-4.4.0-98-generic N/A linux-firmware 1.157.13 Tags: xenial Uname: Linux 4.4.0-98-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dialout dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 05/05/2017 dmi.bios.vendor: Dell Inc. dmi.bios.version: A16 dmi.board.name: 0NC6G7 dmi.board.vendor: Dell Inc. dmi.board.version: A01 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA16:bd05/05/2017:svnDellInc.:pnLatitudeE7450:pvr:rvnDellInc.:rn0NC6G7:rvrA01:cvnDellInc.:ct9:cvr: dmi.product.name: Latitude E7450 dmi.sys.vendor: Dell Inc. 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