apport information ** Description changed:
Lenovo ThinkPad W540 docked with an ultradock. 3 external displays running on VGA, DVI and display port all connected to the dock. BIOS mode set to run external displays ONLY with nvidia chipset. prime-select nvidia run. When running under 4.15.0-36-generic with nvidia 390.77-0ubuntu0.18.04.1 I boot and all three external displays run fine. Upgrading to 4.15.0-38 and Xorg starts up, but none of the displays light up. --- ProblemType: Bug ApportVersion: 2.20.9-0ubuntu7.4 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC2: timr 3768 F.... pulseaudio /dev/snd/controlC1: timr 3768 F.... pulseaudio /dev/snd/controlC0: timr 3768 F.... pulseaudio CurrentDesktop: GNOME-Flashback:GNOME DistroRelease: Ubuntu 18.04 InstallationDate: Installed on 2014-02-15 (1713 days ago) InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1) MachineType: LENOVO 20BHS02400 NonfreeKernelModules: nvidia_modeset nvidia Package: linux-image-generic 4.15.0.38.40 PackageArchitecture: amd64 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-4.15.0-36-generic root=UUID=3fddcb3e-369a-45a1-bcf5-a73850ae7c9f ro video=1920x1080 "acpi_osi=!Windows 2012" ProcVersionSignature: Ubuntu 4.15.0-36.39-generic 4.15.18 RelatedPackageVersions: linux-restricted-modules-4.15.0-36-generic N/A linux-backports-modules-4.15.0-36-generic N/A linux-firmware 1.173.1 Tags: bionic Uname: Linux 4.15.0-36-generic x86_64 UpgradeStatus: Upgraded to bionic on 2018-08-17 (68 days ago) UserGroups: adm cdrom dialout dip disk docker lpadmin plugdev sambashare sudo vboxusers video www-data _MarkForUpload: True dmi.bios.date: 03/16/2016 dmi.bios.vendor: LENOVO dmi.bios.version: GNET79WW (2.27 ) dmi.board.asset.tag: Not Available dmi.board.name: 20BHS02400 dmi.board.vendor: LENOVO dmi.board.version: 0B98401 Pro dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrGNET79WW(2.27):bd03/16/2016:svnLENOVO:pn20BHS02400:pvrThinkPadW540:rvnLENOVO:rn20BHS02400:rvr0B98401Pro:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.family: ThinkPad W540 dmi.product.name: 20BHS02400 dmi.product.version: ThinkPad W540 dmi.sys.vendor: LENOVO + --- + ProblemType: Bug + ApportVersion: 2.20.9-0ubuntu7.4 + Architecture: amd64 + DistroRelease: Ubuntu 18.04 + InstallationDate: Installed on 2014-02-15 (1713 days ago) + InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1) + MachineType: LENOVO 20BHS02400 + NonfreeKernelModules: nvidia_modeset nvidia + Package: linux-generic 4.15.0.38.40 + PackageArchitecture: amd64 + 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-4.15.0-38-generic root=UUID=3fddcb3e-369a-45a1-bcf5-a73850ae7c9f ro video=1920x1080 "acpi_osi=!Windows 2012" + ProcVersionSignature: Ubuntu 4.15.0-38.41-generic 4.15.18 + RelatedPackageVersions: + linux-restricted-modules-4.15.0-38-generic N/A + linux-backports-modules-4.15.0-38-generic N/A + linux-firmware 1.173.1 + Tags: bionic + Uname: Linux 4.15.0-38-generic x86_64 + UpgradeStatus: Upgraded to bionic on 2018-08-17 (69 days ago) + UserGroups: adm cdrom dialout dip disk docker lpadmin plugdev sambashare sudo vboxusers video www-data + _MarkForUpload: True + dmi.bios.date: 03/16/2016 + dmi.bios.vendor: LENOVO + dmi.bios.version: GNET79WW (2.27 ) + dmi.board.asset.tag: Not Available + dmi.board.name: 20BHS02400 + dmi.board.vendor: LENOVO + dmi.board.version: 0B98401 Pro + dmi.chassis.asset.tag: No Asset Information + dmi.chassis.type: 10 + dmi.chassis.vendor: LENOVO + dmi.chassis.version: Not Available + dmi.modalias: dmi:bvnLENOVO:bvrGNET79WW(2.27):bd03/16/2016:svnLENOVO:pn20BHS02400:pvrThinkPadW540:rvnLENOVO:rn20BHS02400:rvr0B98401Pro:cvnLENOVO:ct10:cvrNotAvailable: + dmi.product.family: ThinkPad W540 + dmi.product.name: 20BHS02400 + dmi.product.version: ThinkPad W540 + dmi.sys.vendor: LENOVO ** Attachment added: "AlsaInfo.txt" https://bugs.launchpad.net/bugs/1799994/+attachment/5205514/+files/AlsaInfo.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1799994 Title: Xorg loads, no display on 4.15.0-38, works on 4.15.0-36 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1799994/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
