Kernel freeze when plugging in external monitor via USB-C->DP-Adapter

Bug #1687397 reported by Eiko on 2017-05-01
This bug affects 2 people
Affects Status Importance Assigned to Milestone
Dell Sputnik
linux (Ubuntu)

Bug Description

When plugging in/out my external monitor (Acer B286HK) via an USB-C -> DP Adapter, there is a great chance, that the computer completely freezes. SysReq-Keys are also not working.

I added a kernel.log where you can see the boot-up after one crash, than plugging In/Out the monitor several times till a new complete freeze.

The graphics-card is the internal one of Core(TM) i7-7500Uin of the XPS13 MLK (9360).

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-75-generic 4.4.0-75.96
ProcVersionSignature: Ubuntu 4.4.0-75.96-generic 4.4.59
Uname: Linux 4.4.0-75-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
 /dev/snd/controlC1: eiko 2382 F.... pulseaudio
 /dev/snd/controlC0: eiko 2382 F.... pulseaudio
CurrentDesktop: Unity
Date: Mon May 1 13:25:42 2017
 # This is a distribution channel descriptor
 # For more information see
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=baaa9d41-2d3b-4937-82f8-e923789084a5
InstallationDate: Installed on 2016-12-03 (148 days ago)
InstallationMedia: Ubuntu 16.04 "Xenial" - Build amd64 LIVE Binary 20160624-10:47
MachineType: Dell Inc. XPS 13 9360
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-75-generic.efi.signed root=UUID=758f75ff-3e8f-4d25-8419-f30f215feee3 ro quiet splash vt.handoff=7
 linux-restricted-modules-4.4.0-75-generic N/A
 linux-backports-modules-4.4.0-75-generic N/A
 linux-firmware 1.164
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install) 01/18/2017
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.3.2 0839Y6
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.3.2:bd01/18/2017:svnDellInc.:pnXPS139360:pvr:rvnDellInc.:rn0839Y6:rvrA00:cvnDellInc.:ct9:cvr: XPS 13 9360
dmi.sys.vendor: Dell Inc.

Eiko (e.c.c.o.) wrote :

This change was made by a bot.

Changed in linux (Ubuntu):
status: New → Confirmed
Joseph Salisbury (jsalisbury) wrote :

Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?

Would it be possible for you to test the latest upstream kernel? Refer to . Please test the latest v4.11 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.


Changed in linux (Ubuntu):
importance: Undecided → High
status: Confirmed → Incomplete
Eiko (e.c.c.o.) wrote :

Thanks for the helpful link. I tested the kernel v4.11 and this fixes the issue. Now, the Display is also running at 60 Hz (not 30 as it was before).
There are still some minor errors in kernel.log when plugging In/Out but everything seems to work.

tags: added: kernel-fixed-upstream
Changed in linux (Ubuntu):
status: Incomplete → Confirmed
affects: linux → dell-sputnik
Changed in dell-sputnik:
status: New → Confirmed
Bob Merhebi (bobmerhebi) wrote :

It seems this is the same bug for Dell XPS 15 as well. Not always, but sometimes this happens either using the DA200 adapter (Type-C usb) or direct HDMI. However, a related bug has been fixed (black screen)* so I will report back if this still happens on the Dell XPS 15.


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