Sandy Patterson, the next step is to fully reverse commit bisect from
kernel 4.15 to 4.17-rc7 in order to identify the last bad commit,
followed immediately by the first good one. Once this good commit has
been identified, it may be reviewed for backporting. Could you please do
this following https://wiki.ubuntu.com/Kernel/KernelBisection ?
Please note, finding adjacent kernel versions, or providing a commit
from a kernel version bisect is not fully commit bisecting.
Also, the kernel release names are irrelevant for the purposes of
bisecting.
It is most helpful that after the fix commit (not kernel version) has
been identified, you then mark this report Status Confirmed.
Thank you for your help.
** Tags added: needs-reverse-bisect regression-release
** Changed in: linux (Ubuntu)
Status: Confirmed => Incomplete
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https://bugs.launchpad.net/bugs/1768139
Title:
Kernel crash when booting laptop with hdmi monitor connected
Status in linux package in Ubuntu:
Incomplete
Bug description:
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"
---
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.
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