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? ** Tags added: bios-outdated-1.33 regression-release ** Changed in: xorg (Ubuntu) Importance: Undecided => Low ** Changed in: xorg (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1767903 Title: I am unable to connect external LCD to my laptop via HDMI Status in xorg package in Ubuntu: Incomplete 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 ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17 Uname: Linux 4.15.0-20-generic x86_64 .tmp.unity_support_test.1: ApportVersion: 2.20.9-0ubuntu7 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' 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 ExtraDebuggingInterest: Yes, if not too technical 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=/vmlinuz-4.15.0-20-generic root=UUID=9e6972ea-13cb-4a69-ba84-efbfda8ae024 ro recovery nomodeset 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.asset.tag: Not Available dmi.board.name: 20EV0004UE dmi.board.vendor: LENOVO dmi.board.version: Not Defined dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrR00ET41W(1.16):bd04/12/2016:svnLENOVO:pn20EV0004UE:pvrThinkPadE560:rvnLENOVO:rn20EV0004UE:rvrNotDefined:cvnLENOVO:ct10:cvrNone: dmi.product.family: ThinkPad E560 dmi.product.name: 20EV0004UE dmi.product.version: ThinkPad E560 dmi.sys.vendor: LENOVO version.compiz: compiz 1:0.9.13.1+18.04.20180302-0ubuntu1 version.libdrm2: libdrm2 2.4.91-2 version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.0~rc5-1ubuntu1 version.libgl1-mesa-glx: libgl1-mesa-glx 18.0.0~rc5-1ubuntu1 version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.5-1ubuntu1 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 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1767903/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp