Public bug reported:
Connecting an external Display Port screen wither via the dell E-Port
plus or directly via the miniDP causes a kernel panic. The crash is not
always immediate, if the internal screen is disabled when docked, then
the external screen may work, though undocking and docking a second time
usually crashes it.
Kernels crashing for me are 4.4.0-21-generic and 4.4.0-22-generic.
Testing with the mainline kernel linux-
image-4.4.12-040412-generic=4.4.12-040412.201606011712 has not yet
caused the panic
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-22-generic 4.4.0-22.40
ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
Uname: Linux 4.4.0-22-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: anton 1885 F.... pulseaudio
CurrentDesktop: Unity
Date: Mon Jun 6 08:25:23 2016
InstallationDate: Installed on 2016-06-01 (4 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 8087:0a2b Intel Corp.
Bus 001 Device 003: ID 0a5c:5800 Broadcom Corp. BCM5880 Secure Applications
Processor
Bus 001 Device 002: ID 1bcf:28b8 Sunplus Innovation Technology Inc.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Dell Inc. Latitude E7470
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-22-generic
root=UUID=7bebd315-73de-4106-9fef-07139edd58f2 ro rootflags=subvol=@ quiet
splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-4.4.0-22-generic N/A
linux-backports-modules-4.4.0-22-generic N/A
linux-firmware 1.157
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/18/2016
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.5.3
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.:bvr1.5.3:bd04/18/2016:svnDellInc.:pnLatitudeE7470:pvr:rvnDellInc.:rn0T6HHJ:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E7470
dmi.sys.vendor: Dell Inc.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug xenial
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https://bugs.launchpad.net/bugs/1589397
Title:
kernel panic connecting display port to Dell Latitude E7470
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