Public bug reported:
After upgrading the kernel on my Ubuntu 17.04 laptop from
linux-image-4.13.0-16-generic to linux-image-4.13.0-17-generic the HDMI port
was no longer recognised by the system causing the external display to stop
working.
Reverting the kernel to linux-image-4.13.0-16-generic fixes the issue.
ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: linux-image-4.13.0-17-generic (not installed)
ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
Uname: Linux 4.13.0-16-generic x86_64
ApportVersion: 2.20.7-0ubuntu3.5
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: linus 2762 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Thu Nov 23 09:17:32 2017
HibernationDevice: RESUME=UUID=864b1d5d-3e65-4d95-b439-941a5825c74f
InstallationDate: Installed on 2017-10-18 (35 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170926)
MachineType: Dell Inc. Latitude E7470
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.13.0-16-generic.efi.signed
root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-4.13.0-16-generic N/A
linux-backports-modules-4.13.0-16-generic N/A
linux-firmware 1.169
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/02/2017
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.16.4
dmi.board.name: 0T6HHJ
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvr1.16.4:bd06/02/2017:svnDellInc.:pnLatitudeE7470:pvr:rvnDellInc.:rn0T6HHJ:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.family: Latitude
dmi.product.name: Latitude E7470
dmi.sys.vendor: Dell Inc.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: amd64 apport-bug artful wayland-session
** Attachment added: "lspci-vnvn.log"
https://bugs.launchpad.net/bugs/1734084/+attachment/5013468/+files/lspci-vnvn.log
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https://bugs.launchpad.net/bugs/1734084
Title:
Kernel Update Causes HDMI Port to Stop Working
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