Ubuntu
linux package

Monitors stopped working

Bug #1813896 reported by Attila Fejér on 2019-01-30

This bug report is a duplicate of: Bug #1813663: External monitors does not work anymore 4.15.0-44. Edit Remove

This bug affects 2 people

Affects		Status	Importance	Assigned to	Milestone
	gnome-shell (Ubuntu)	Incomplete	Undecided	Unassigned
	linux (Ubuntu)	Incomplete	Undecided	Unassigned

Bug Description

I have a Dell Latitude E7470 laptop with a docking station and two external monitors.

I made a system update yesterday (without restart), and I tried to work today.

When the laptop lid is laid off, all displays are black and stays that way. When it's open, it works fine. If I lock the computer, the displays are going black again.

Also, I cannot restart the system, it just hangs.

The only solution is to switch off the system is holding the power button, then booting up again, with the laptop screen open.

My other colleagues with similar configurations have the same issues.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: xorg 1:7.7+19ubuntu7.1
ProcVersionSignature: Ubuntu 4.15.0-44.47-generic 4.15.18
Uname: Linux 4.15.0-44-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Wed Jan 30 09:58:12 2019
DistUpgraded: Fresh install
DistroCodename: bionic
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
Intel Corporation HD Graphics 520 [8086:1916] (rev 07) (prog-if 00 [VGA controller])
Subsystem: Dell Skylake GT2 [HD Graphics 520] [1028:06dc]
InstallationDate: Installed on 2018-09-24 (128 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
MachineType: Dell Inc. Latitude E7470
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-44-generic root=UUID=fd65107a-71e9-4b89-9f1e-e90f34670b9f ro quiet splash vt.handoff=1
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/09/2016
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.11.3
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.:bvr1.11.3:bd11/09/2016:svnDellInc.:pnLatitudeE7470:pvr:rvnDellInc.:rn0T6HHJ:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.family: Latitude
dmi.product.name: Latitude E7470
dmi.sys.vendor: Dell Inc.
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.91-2
version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.5-0ubuntu0~18.04.1
version.libgl1-mesa-glx: libgl1-mesa-glx 18.0.5-0ubuntu0~18.04.1
version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4.2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.0.1-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20171229-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2

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Revision history for this message

Attila Fejér (fanatixan) wrote on 2019-01-30:

CurrentDmesg.txt Edit (66.3 KiB, text/plain; charset="utf-8")
Dependencies.txt Edit (12.9 KiB, text/plain; charset="utf-8")
DpkgLog.txt Edit (1.0 MiB, text/plain; charset="utf-8")
Lspci.txt Edit (9.5 KiB, text/plain; charset="utf-8")
Lsusb.txt Edit (597 bytes, text/plain; charset="utf-8")
MonitorsUser.xml.txt Edit (5.0 KiB, text/plain; charset="utf-8")
ProcCpuinfo.txt Edit (5.0 KiB, text/plain; charset="utf-8")
ProcCpuinfoMinimal.txt Edit (1.3 KiB, text/plain; charset="utf-8")
ProcEnviron.txt Edit (311 bytes, text/plain; charset="utf-8")
ProcInterrupts.txt Edit (3.0 KiB, text/plain; charset="utf-8")
ProcModules.txt Edit (8.4 KiB, text/plain; charset="utf-8")
UdevDb.txt Edit (196.0 KiB, text/plain; charset="utf-8")
XorgLog.txt Edit (69.3 KiB, text/plain; charset="utf-8")
XorgLogOld.txt Edit (69.3 KiB, text/plain; charset="utf-8")
Xrandr.txt Edit (35.4 KiB, text/plain; charset="utf-8")
xdpyinfo.txt Edit (24.4 KiB, text/plain; charset="utf-8")

Revision history for this message

Daniel van Vugt (vanvugt) wrote on 2019-01-30:

The only recent changes to Ubuntu 18.04 I can see that might be relevant are:

gnome-shell - 7 January 2019
linux (kernel) - A couple of times this month

There have been no changes to Xorg or mutter anyway...

affects:

xorg (Ubuntu) → linux (Ubuntu)

Revision history for this message

Daniel van Vugt (vanvugt) wrote on 2019-01-30:

Is the main problem you are reporting that all displays turn black after you close the laptop lid?

Changed in gnome-shell (Ubuntu):
status:	New → Incomplete
Changed in linux (Ubuntu):
status:	New → Incomplete

Revision history for this message

Attila Fejér (fanatixan) wrote on 2019-01-30:

Yes, the main issue is the displays turn black.
However, I think that both causes (closing the laptop lid and locking) are equally important.

Revision history for this message

Michał Dziędziela (widgetpl) wrote on 2019-01-31:

I have similar problem, in my case I saw some firmware update but don't know what it was exactly.
It happens while Im using Dock station through thunderbolt and when I plug in directly to laptop through HDMI port. I have tried with noveau ( doesn't work at all ) and nvidia drivers ( works but can't change display order as it hangs and also closing lid makes my laptop freeze ). I tlooks like something happens with xorg server but not sure.

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