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 https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.19 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. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.19.1 ** Also affects: linux (Ubuntu) Importance: Undecided Status: New ** Changed in: linux (Ubuntu) Status: New => Incomplete ** Package changed: xorg (Ubuntu) => xorg-server (Ubuntu) -- 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/1801747 Title: External display not recognized, internal one goes to black Status in linux package in Ubuntu: Incomplete Status in xorg-server package in Ubuntu: New Bug description: Hi, I have 10 notebooks HP 1410s on which I replace XP/Vista with Ubuntu 18.04.1 I face a problem on ALL of them, as soon as I connect an external screen, doesn't matter VGA or HDMI, the internal screen goes black, only mouse icon is their, blinking from time to time but reacting. External screen does show nothing but there is no "no signal" info what means that source is recognized. As soon as I release the video cable from external display, the internal one come back to live after few seconds. The BIOS was updated to latest available. Daniel tootai@hirondelle:~$ lsb_release -rd Description: Ubuntu 18.04.1 LTS Release: 18.04 ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: xorg 1:7.7+19ubuntu7.1 ProcVersionSignature: Ubuntu 4.15.0-36.39-generic 4.15.18 Uname: Linux 4.15.0-36-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.20.9-0ubuntu7.4 Architecture: amd64 CompositorRunning: None Date: Mon Nov 5 16:30:38 2018 DistUpgraded: Fresh install DistroCodename: bionic DistroVariant: ubuntu DkmsStatus: bcmwl, 6.30.223.271+bdcom, 4.15.0-29-generic, x86_64: installed bcmwl, 6.30.223.271+bdcom, 4.15.0-36-generic, x86_64: installed ExtraDebuggingInterest: Yes GraphicsCard: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07) (prog-if 00 [VGA controller]) Subsystem: Hewlett-Packard Company Mobile 4 Series Chipset Integrated Graphics Controller [103c:3072] Subsystem: Hewlett-Packard Company Mobile 4 Series Chipset Integrated Graphics Controller [103c:3072] InstallationDate: Installed on 2018-10-19 (17 days ago) InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725) MachineType: Hewlett-Packard HP ProBook 4510s ProcEnviron: TERM=xterm-256color PATH=(custom, no user) LANG=fr_FR.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-36-generic root=UUID=6ddf18e3-f14e-4d1c-b2fd-ae58c6f697ed ro quiet splash vt.handoff=1 SourcePackage: xorg Symptom: display UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 12/02/2010 dmi.bios.vendor: Hewlett-Packard dmi.bios.version: 68PZI Ver. F.18 dmi.board.name: 3072 dmi.board.vendor: Hewlett-Packard dmi.board.version: KBC Version 24.0F dmi.chassis.asset.tag: CNU0012B8R dmi.chassis.type: 10 dmi.chassis.vendor: Hewlett-Packard dmi.modalias: dmi:bvnHewlett-Packard:bvr68PZIVer.F.18:bd12/02/2010:svnHewlett-Packard:pnHPProBook4510s:pvrF.18:rvnHewlett-Packard:rn3072:rvrKBCVersion24.0F:cvnHewlett-Packard:ct10:cvr: dmi.product.family: 103C_5336AN dmi.product.name: HP ProBook 4510s dmi.product.version: F.18 dmi.sys.vendor: Hewlett-Packard 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 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1801747/+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
