Jonathan Kamens, thank you for reporting this and helping make Ubuntu better.
As per http://www.acer.com/ac/en/US/content/drivers an update to your computer's buggy and outdated BIOS is available (R01.A2). If you update to this following https://help.ubuntu.com/community/BIOSUpdate does it change anything? For more on BIOS updates and linux, please see https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette . Please note your current BIOS is already in the Bug Description, so posting this on the old BIOS would not be helpful. As well, you don't have to create a new bug report. Once the BIOS is updated, if the problem is still reproducible: 1) Please provide the output of the following terminal command (not perform an apport-collect): sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date 2) Please make a comment specifically advising on if there was an improvement or not. 3) Please mark this report Status New. If it's not reproducible, please mark this as Invalid. Thank you for your understanding. ** Tags added: bios-outdated-r01-a2 ** Changed in: xorg (Ubuntu) Importance: Undecided =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 Desktop Packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1536165 Title: X server hangs on start when DisplayPort is connected Status in xorg package in Ubuntu: Incomplete Bug description: I just bought a new Acer Predator AG6-710, which supposedly comes with a NVIDIA GeForce GTX 980 graphics controller. It has four output plugs -- DVI, two mini DisplayPort, and HDMI. When I have only one monitor plugged in, on the DVI port using DVI-A, i.e., through a DVI-A -> VGA adapter and then a VGA cable, Ubuntu boots up just fine. However, when I have two monitors plugged in, the first as described above and the second through one of the DisplayPorts via a mini DisplayPort to DVI-I adapter and a DVI-A cable, the X server hangs on boot, and I end up with two blank screens and monitors claiming no signal is being sent. I've attached the Xorg log file when this happens. It happens every single time I boot, i.e., it is reliable. Any additional debugging information I can provide or debugging steps I can take, please ask, I will gladly help. ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: xserver-xorg 1:7.7+7ubuntu4 ProcVersionSignature: Ubuntu 4.2.0-25.30-generic 4.2.6 Uname: Linux 4.2.0-25-generic x86_64 .tmp.unity.support.test.1: ApportVersion: 2.19.1-0ubuntu5 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: compiz CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0' CompositorUnredirectFSW: true CurrentDesktop: Unity Date: Wed Jan 20 07:13:46 2016 DistUpgraded: Fresh install DistroCodename: wily DistroVariant: ubuntu DkmsStatus: virtualbox, 5.0.10, 4.2.0-23-generic, x86_64: installed virtualbox, 5.0.10, 4.2.0-25-generic, x86_64: installed ExtraDebuggingInterest: Yes GraphicsCard: NVIDIA Corporation GM204 [GeForce GTX 970] [10de:13c2] (rev a1) (prog-if 00 [VGA controller]) Subsystem: Device [196e:1131] InstallationDate: Installed on 2016-01-16 (4 days ago) InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021) MachineType: Acer Predator G6-710 ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.2.0-25-generic.efi.signed root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7 Renderer: Software SourcePackage: xorg UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/21/2015 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: R01-A1 dmi.board.name: Predator G6-710 dmi.board.vendor: Acer dmi.chassis.type: 3 dmi.chassis.vendor: Acer dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrR01-A1:bd09/21/2015:svnAcer:pnPredatorG6-710:pvr:rvnAcer:rnPredatorG6-710:rvr:cvnAcer:ct3:cvr: dmi.product.name: Predator G6-710 dmi.sys.vendor: Acer version.compiz: compiz 1:0.9.12.2+15.10.20151015-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.64-1 version.libgl1-mesa-dri: libgl1-mesa-dri 11.0.2-1ubuntu4 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 11.0.2-1ubuntu4 version.xserver-xorg-core: xserver-xorg-core 2:1.17.2-1ubuntu9.1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.2-1ubuntu1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0+git20150819-0ubuntu1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20150808-0ubuntu4 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu3 xserver.bootTime: Wed Jan 20 06:50:52 2016 xserver.configfile: default xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.17.2-1ubuntu9.1 xserver.video_driver: modeset To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1536165/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
