Public bug reported:
1) I am on laptop screen
2) connect external 4K TV with hdmi
3) laptop goes to sleep mode
4) disconnect external TV and connect external monitor with lower resolution
than 4k
5) turn on laptop
6) error in monitor saying can not support that resolution, no image no image
on laptop either
After plugging and unplugging few times, started working fine
please fix
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: xorg 1:7.7+19ubuntu7.1
ProcVersionSignature: Ubuntu 4.15.0-38.41-generic 4.15.18
Uname: Linux 4.15.0-38-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.4
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Sat Nov 17 07:50:09 2018
DistUpgraded: Fresh install
DistroCodename: bionic
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev
0b) (prog-if 00 [VGA controller])
Subsystem: Dell Haswell-ULT Integrated Graphics Controller [1028:063e]
InstallationDate: Installed on 2018-11-01 (15 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
MachineType: Dell Inc. Inspiron 5547
ProcEnviron:
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-38-generic
root=UUID=03b0f076-7978-4e42-856b-f24ddfebdf8f ro quiet splash vt.handoff=1
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/24/2018
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A11
dmi.board.name: 0598GM
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: A11
dmi.modalias:
dmi:bvnDellInc.:bvrA11:bd01/24/2018:svnDellInc.:pnInspiron5547:pvrA11:rvnDellInc.:rn0598GM:rvrA00:cvnDellInc.:ct8:cvrA11:
dmi.product.family: 00
dmi.product.name: Inspiron 5547
dmi.product.version: A11
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
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug bionic ubuntu
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https://bugs.launchpad.net/bugs/1803825
Title:
Switching HDMI cable causes display issue
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