The only kernel I can get to work at all in terms of allowing lightdm to run and me to log in is 3.19.x
All Ubuntu kernels I have tried - 4.2.0-23 - 4.3.0-6 - 4.4.0-0 cause boot to lock up. It's not just lightdm that fails. You can't even Alt-Shift F1 to a console. The only 4.x kernel that works (which also allows networking) in mainline 4.4. ** Description changed: - Booting with intel graphics enabled results in a lockup loading lightdm - or logging in results in the greeter screen appearing again. The laptop - has a Nvidia GTX730 graphics card which can be switched off via - bumblebee or prime. + Booting with intel graphics enabled results in a lockup loading lightdm or logging in results in the greeter screen appearing again. The laptop has a Nvidia GTX730 graphics card which can be switched off via bumblebee or prime. + --- + ApportVersion: 2.19.1-0ubuntu5 + Architecture: amd64 + AudioDevicesInUse: + USER PID ACCESS COMMAND + /dev/snd/controlC0: ian 2045 F.... pulseaudio + CurrentDesktop: Unity + DistroRelease: Ubuntu 15.10 + HibernationDevice: RESUME=UUID=df036c01-8f22-4d8f-ad55-6add4f99f5f4 + MachineType: Notebook P65_P67RGRERA + NonfreeKernelModules: nvidia_modeset nvidia + Package: linux (not installed) + ProcFB: 0 inteldrmfb + ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-43-generic root=UUID=2077d068-d7ee-4407-89e1-7d2b884173de ro quiet splash + ProcVersionSignature: Ubuntu 3.19.0-43.49-generic 3.19.8-ckt10 + RelatedPackageVersions: + linux-restricted-modules-3.19.0-43-generic N/A + linux-backports-modules-3.19.0-43-generic N/A + linux-firmware 1.155 + Tags: wily + UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' + Uname: Linux 3.19.0-43-generic x86_64 + UpgradeStatus: No upgrade log present (probably fresh install) + UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo + _MarkForUpload: True + dmi.bios.date: 11/20/2015 + dmi.bios.vendor: American Megatrends Inc. + dmi.bios.version: 1.05.10 + dmi.board.asset.tag: Tag 12345 + dmi.board.name: P65_P67RGRERA + dmi.board.vendor: Notebook + dmi.board.version: Not Applicable + dmi.chassis.asset.tag: No Asset Tag + dmi.chassis.type: 10 + dmi.chassis.vendor: Notebook + dmi.chassis.version: N/A + dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1.05.10:bd11/20/2015:svnNotebook:pnP65_P67RGRERA:pvrNotApplicable:rvnNotebook:rnP65_P67RGRERA:rvrNotApplicable:cvnNotebook:ct10:cvrN/A: + dmi.product.name: P65_P67RGRERA + dmi.product.version: Not Applicable + dmi.sys.vendor: Notebook -- 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/1533221 Title: Booting with intel graphics enabled results in a lockup Status in linux package in Ubuntu: Confirmed Bug description: Booting with intel graphics enabled results in a lockup loading lightdm or logging in results in the greeter screen appearing again. The laptop has a Nvidia GTX730 graphics card which can be switched off via bumblebee or prime. --- ApportVersion: 2.19.1-0ubuntu5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: ian 2045 F.... pulseaudio CurrentDesktop: Unity DistroRelease: Ubuntu 15.10 HibernationDevice: RESUME=UUID=df036c01-8f22-4d8f-ad55-6add4f99f5f4 MachineType: Notebook P65_P67RGRERA NonfreeKernelModules: nvidia_modeset nvidia Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-43-generic root=UUID=2077d068-d7ee-4407-89e1-7d2b884173de ro quiet splash ProcVersionSignature: Ubuntu 3.19.0-43.49-generic 3.19.8-ckt10 RelatedPackageVersions: linux-restricted-modules-3.19.0-43-generic N/A linux-backports-modules-3.19.0-43-generic N/A linux-firmware 1.155 Tags: wily UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' Uname: Linux 3.19.0-43-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 11/20/2015 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 1.05.10 dmi.board.asset.tag: Tag 12345 dmi.board.name: P65_P67RGRERA dmi.board.vendor: Notebook dmi.board.version: Not Applicable dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: Notebook dmi.chassis.version: N/A dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1.05.10:bd11/20/2015:svnNotebook:pnP65_P67RGRERA:pvrNotApplicable:rvnNotebook:rnP65_P67RGRERA:rvrNotApplicable:cvnNotebook:ct10:cvrN/A: dmi.product.name: P65_P67RGRERA dmi.product.version: Not Applicable dmi.sys.vendor: Notebook To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1533221/+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
