Mario Costa: 1) Please provide the output of the following terminal command (not manually attach anything found): ls -la /var/crash
2) As per your Bug Description, you are using the non-default kernel parameter: radeon.runpm=0 Could you please advise to if this is required to use? Also, if you remove it, does the crash still happen? 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 monitor manufacturer and model? 4) How are you connecting the monitor to the computer, via DisplayPort- to-DisplayPort cable, DisplayPort-to-HDMI cable, dongle/adapter, etc.? 5) If you keep the external monitor disconnected from the computer on boot up, and after login then plug it in does this provide a WORKAROUND? 6) Does the crash only happen after coming up from a cold boot, only after resuming from suspend, etc.? ** Changed in: xorg (Ubuntu) Importance: Low => Medium -- 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/1771539 Title: Xorg crash Status in xorg package in Ubuntu: Incomplete Bug description: When I try to use ubuntu with dual desktop display it crashes continuously, and entering into login mode. I cannot use dual display. To use an external monitor, I have to start the laptop with the computer closed. It seems to be related to the graphic card, maybe dual graphic card of the laptop. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: xorg 1:7.7+13ubuntu3 ProcVersionSignature: Ubuntu 4.4.0-124.148-generic 4.4.117 Uname: Linux 4.4.0-124-generic x86_64 .tmp.unity_support_test.0: ApportVersion: 2.20.1-0ubuntu2.16 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None CurrentDesktop: GNOME-Classic:GNOME Date: Wed May 16 10:36:05 2018 DistUpgraded: Fresh install DistroCodename: xenial DistroVariant: ubuntu ExtraDebuggingInterest: Yes GraphicsCard: Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev 0b) (prog-if 00 [VGA controller]) Subsystem: Hewlett-Packard Company Haswell-ULT Integrated Graphics Controller [103c:198f] Advanced Micro Devices, Inc. [AMD/ATI] Mars [Radeon HD 8730M] [1002:6601] (prog-if 00 [VGA controller]) Subsystem: Hewlett-Packard Company Mars [Radeon HD 8730M] [103c:1990] InstallationDate: Installed on 2017-12-13 (153 days ago) InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801) MachineType: Hewlett-Packard HP EliteBook 840 G1 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-124-generic root=UUID=e1833df7-4a4b-41b2-8393-d88536dd0165 ro quiet splash radeon.runpm=0 vt.handoff=7 SourcePackage: xorg Symptom: display Title: Xorg crash UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/26/2016 dmi.bios.vendor: Hewlett-Packard dmi.bios.version: L71 Ver. 01.39 dmi.board.name: 198F dmi.board.vendor: Hewlett-Packard dmi.board.version: KBC Version 15.59 dmi.chassis.asset.tag: 5CG44010XD dmi.chassis.type: 10 dmi.chassis.vendor: Hewlett-Packard dmi.modalias: dmi:bvnHewlett-Packard:bvrL71Ver.01.39:bd09/26/2016:svnHewlett-Packard:pnHPEliteBook840G1:pvrA3009DD10303:rvnHewlett-Packard:rn198F:rvrKBCVersion15.59:cvnHewlett-Packard:ct10:cvr: dmi.product.name: HP EliteBook 840 G1 dmi.product.version: A3009DD10303 dmi.sys.vendor: Hewlett-Packard version.compiz: compiz 1:0.9.12.3+16.04.20180221-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.83-1~16.04.1 version.libgl1-mesa-dri: libgl1-mesa-dri 17.2.8-0ubuntu0~16.04.1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 17.2.8-0ubuntu0~16.04.1 version.xserver-xorg-core: xserver-xorg-core N/A version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A xserver.bootTime: Thu Mar 8 12:39:32 2018 xserver.configfile: default xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.19.5-0ubuntu2~16.04.1 xserver.video_driver: modeset To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1771539/+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