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[John Ioannidis <ubuntu@xxxxxxx>]

If i boot the machine with a single monitor (boots fine), log in and
everything (so all USB peripherals are connected already), the X server
crashes. Ditto if I try to boot with multiple monitors already connected
(before X comes on, all three monitors have the same image, namely,
either the bios screen or the linux boot messages).

Even after the Xorg server crashes, I can still use Ctrl-Alt-F1 to go to
a vty.

If this is not enough information, tomorrow I can try to repeat the
crash and attach the output of pstree.

Thanks.

-- 
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/1453306

Title:
  Xorg freeze

Status in xorg package in Ubuntu:
  Incomplete

Bug description:
  Running a freshly-installed 15.04, fully-updated, on an Intel
  NUC5i5RYK (with an up-to-date bios). Connected to three Dell U2415
  monitors, daisy-chained using the DP output.

  As you can see from Xorg.0.log, all three monitors are detected, and
  the framebuffer is set to 5760 x 1200 (3 * 1920 x 1200).

  This problem only manifests itself when connected to more than one
  monitor.

  ---
  ApportVersion: 2.17.2-0ubuntu1
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: None
  DistUpgraded: Fresh install
  DistroCodename: vivid
  DistroRelease: Ubuntu 15.04
  DistroVariant: ubuntu
  DkmsStatus: virtualbox, 4.3.26, 3.19.0-16-generic, x86_64: installed
  GraphicsCard:
   Intel Corporation Broadwell-U Integrated Graphics [8086:1626] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: Intel Corporation Device [8086:2057]
  InstallationDate: Installed on 2015-05-09 (2 days ago)
  InstallationMedia: Kubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
  Package: xorg 1:7.7+7ubuntu4
  PackageArchitecture: amd64
  ProcEnviron:
   LANGUAGE=
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.19.0-16-generic.efi.signed root=/dev/mapper/kubuntu--vg-root ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.19.0-16.16-generic 3.19.3
  Tags:  vivid ubuntu
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  Uname: Linux 3.19.0-16-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups:

  _MarkForUpload: True
  dmi.bios.date: 04/15/2015
  dmi.bios.vendor: Intel Corporation
  dmi.bios.version: RYBDWi35.86A.0247.2015.0415.1351
  dmi.board.name: NUC5i5RYB
  dmi.board.vendor: Intel Corporation
  dmi.board.version: H40999-502
  dmi.chassis.type: 3
  dmi.modalias: dmi:bvnIntelCorporation:bvrRYBDWi35.86A.0247.2015.0415.1351:bd04/15/2015:svn:pn:pvr:rvnIntelCorporation:rnNUC5i5RYB:rvrH40999-502:cvn:ct3:cvr:
  version.compiz: compiz N/A
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.60-2
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.5.2-0ubuntu1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.5.2-0ubuntu1
  version.xserver-xorg-core: xserver-xorg-core 2:1.17.1-0ubuntu3
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.0-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0-1ubuntu2
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917-1~exp1ubuntu2.1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu2build1
  xserver.bootTime: Mon May 11 19:54:13 2015
  xserver.configfile: default
  xserver.errors:

  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:

  xserver.version: 2:1.17.1-0ubuntu3

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