apport information ** Tags added: apport-collected
** Description changed: When I boot a Dell Inspiron 7559 with an external monitor connected to the hdmi port I get a crash on bootup. I can see the following stack trace in journalctl: syslog contains: kernel: Missing switch case (6) in intel_prepare_dp_ddi_buffers Description: Ubuntu 18.04 LTS Release: 18.04 linux-image-4.15.0-20-generic: Installed: 4.15.0-20.21 Candidate: 4.15.0-20.21 Version table: *** 4.15.0-20.21 500 500 http://us.archive.ubuntu.com/ubuntu bionic/main amd64 Packages 100 /var/lib/dpkg/status Linux exposure 4.15.0-20-generic #21-Ubuntu SMP Tue Apr 24 06:16:15 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux 3) What you expected to happen I expected the laptop to boot to the login screen. 4) What happened instead I see a blank screen after grub and have to hard power off the laptop. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-4.15.0-20-generic 4.15.0-20.21 ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17 Uname: Linux 4.15.0-20-generic x86_64 ApportVersion: 2.20.9-0ubuntu7 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Mon Apr 30 17:22:20 2018 InstallationDate: Installed on 2018-04-28 (2 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) SourcePackage: linux-signed UpgradeStatus: No upgrade log present (probably fresh install) - This is a fresh install. I have modified grub defaults to include - "acpi_osi=!Windows 2015" + This is a fresh install. I have modified grub defaults to include "acpi_osi=!Windows 2015" + --- + ApportVersion: 2.20.9-0ubuntu7 + Architecture: amd64 + AudioDevicesInUse: + USER PID ACCESS COMMAND + /dev/snd/controlC0: apatterson 1965 F.... pulseaudio + CurrentDesktop: ubuntu:GNOME + DistroRelease: Ubuntu 18.04 + HibernationDevice: RESUME=UUID=7b947b8e-de50-4ab6-b7f3-254a5dea924a + InstallationDate: Installed on 2018-04-28 (9 days ago) + InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) + MachineType: Dell Inc. Inspiron 7559 + Package: linux (not installed) + ProcFB: 0 inteldrmfb + ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-20-generic root=UUID=77f1cfec-1fe4-4201-9a91-9f00a5d7782b ro quiet splash "acpi_osi=!Windows 2015" + ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17 + RelatedPackageVersions: + linux-restricted-modules-4.15.0-20-generic N/A + linux-backports-modules-4.15.0-20-generic N/A + linux-firmware 1.173 + Tags: bionic wayland-session + Uname: Linux 4.15.0-20-generic x86_64 + UpgradeStatus: No upgrade log present (probably fresh install) + UserGroups: adm cdrom dialout dip lpadmin plugdev sambashare sudo wireshark + _MarkForUpload: True + dmi.bios.date: 09/26/2017 + dmi.bios.vendor: Dell Inc. + dmi.bios.version: 1.2.5 + dmi.board.name: 0H0CC0 + dmi.board.vendor: Dell Inc. + dmi.board.version: A00 + dmi.chassis.type: 10 + dmi.chassis.vendor: Dell Inc. + dmi.chassis.version: Not Specified + dmi.modalias: dmi:bvnDellInc.:bvr1.2.5:bd09/26/2017:svnDellInc.:pnInspiron7559:pvr1.2.5:rvnDellInc.:rn0H0CC0:rvrA00:cvnDellInc.:ct10:cvrNotSpecified: + dmi.product.family: Inspiron + dmi.product.name: Inspiron 7559 + dmi.product.version: 1.2.5 + dmi.sys.vendor: Dell Inc. ** Attachment added: "AlsaInfo.txt" https://bugs.launchpad.net/bugs/1768139/+attachment/5136291/+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/1768139 Title: Kernel crash when booting laptop with hdmi monitor connected To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1768139/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
