I am unable to connect external LCD to my laptop via HDMI
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
xorg (Ubuntu) |
Expired
|
Low
|
Unassigned |
Bug Description
This issue pop-up after I upgraded to 18.04 LTS. (It was working fine on 16.04)
In graphics section, I am seeing Gallium 0.4 but my graphics are Intel HD 520
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: xorg 1:7.7+19ubuntu7
ProcVersionSign
Uname: Linux 4.15.0-20-generic x86_64
.tmp.unity_
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
CompizPlugins: No value set for `/apps/
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Mon Apr 30 05:56:30 2018
DistUpgraded: Fresh install
DistroCodename: bionic
DistroVariant: ubuntu
DkmsStatus:
virtualbox, 5.2.10, 4.15.0-20-generic, x86_64: installed
virtualbox, 5.2.10, 4.4.0-121-generic, x86_64: installed
ExtraDebuggingI
GraphicsCard:
Intel Corporation HD Graphics 520 [8086:1916] (rev 07) (prog-if 00 [VGA controller])
Subsystem: Lenovo Skylake GT2 [HD Graphics 520] [17aa:5049]
Subsystem: Lenovo Mars [Radeon HD 8670A/8670M/8750M] [17aa:5049]
InstallationDate: Installed on 2017-01-23 (461 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 0bda:57e3 Realtek Semiconductor Corp.
Bus 001 Device 003: ID 8087:0a2a Intel Corp.
Bus 001 Device 002: ID 09da:010e A4Tech Co., Ltd.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: LENOVO 20EV0004UE
ProcKernelCmdLine: BOOT_IMAGE=
Renderer: Software
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/12/2016
dmi.bios.vendor: LENOVO
dmi.bios.version: R00ET41W (1.16 )
dmi.board.
dmi.board.name: 20EV0004UE
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.
dmi.modalias: dmi:bvnLENOVO:
dmi.product.family: ThinkPad E560
dmi.product.name: 20EV0004UE
dmi.product.
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.13.
version.libdrm2: libdrm2 2.4.91-2
version.
version.
version.
version.
version.
version.
version.
xserver.bootTime: Mon Apr 30 05:07:12 2018
xserver.configfile: default
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.19.6-1ubuntu4
Abdullah Ahmed, thank you for reporting this and helping make Ubuntu better.
1) To clarify, could you please advise to the use of kernel boot parameter nomodeset?
2) If you remove the nomodeset parameter does this influence this issue?
3) As per the sticker of the monitor itself (not from the Bug Description, or the result of a terminal command), could you please provide the full manufacturer and model?
4) Are you using an adapter/dongle to connect the monitor or is it one HDMI cord connecting the laptop to the monitor?
5) When you do plug the monitor in, in the application Settings > Devices > Display does it recognize something is plugged in?