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[Bug 1503590] Re: Trouble with DisplayPort

 

> Hadmut Danisch, why do you read half of the instructions before
following them? ;)

Because I follow instruction in order, and because it wasn't obvious
that these were two instructions, because one explicitely stated and
outstanding, the other hidden in the text. That's what we call
misleading (and such wasting other people's time).


I've tested yesterday's kernel


4.3.0-040300rc6-generic #201510182030 SMP

which works as normal, no installation problems, but the DisplayPort-
problem still exists: Boot code and boot splash are shown on
DisplayPort, but as soon as X11 takes control, screen becomes black.



** Tags added: kernel-bug-exists-upstream kernel-bug-exists-upstream-4.3-rc6

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https://bugs.launchpad.net/bugs/1503590

Title:
  Trouble with DisplayPort

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I've installed 15.10 beta on a brand new ASRock beebox N3150 PC. This
  device has three display connectors, 1x DisplayPort, 2xHDMI. I'm
  having a Display with 2560x1600, and thus want to use with with
  DisplayPort for full resolution.

  When connecting screen and PC with DisplayPort, both the BIOS and the
  Linux BootSplash/Console correctly recognize the screen to be
  connected to DisplayPort and are displayed as usual. But as soon as X
  starts, screen becomes black (and the screen itself somewhat confused,
  because it does not even respond to the menu button anymore).
  Interestingly, the same screen worked properly when connected with
  DisplayPort to another Linux machine with 14.04.

  Connecting the screen with HDMI instead works without any problems, but gives a reduced resolution of 1920x1080 only.
  --- 
  ApportVersion: 2.19.1-0ubuntu2
  Architecture: amd64
  BootLog:
   
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: None
  CurrentDesktop: XFCE
  DistUpgraded: Fresh install
  DistroCodename: wily
  DistroRelease: Ubuntu 15.10
  DistroVariant: ubuntu
  DkmsStatus:
   virtualbox, 5.0.4, 4.2.0-14-generic, x86_64: installed
   virtualbox, 5.0.4, 4.2.0-16-generic, x86_64: installed
  ExtraDebuggingInterest: Yes, if not too technical
  GraphicsCard:
   Intel Corporation Device [8086:22b1] (rev 21) (prog-if 00 [VGA controller])
     Subsystem: ASRock Incorporation Device [1849:22b1]
  InstallationDate: Installed on 2015-09-03 (45 days ago)
  InstallationMedia: Xubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20150825)
  LightdmGreeterLog:
   ** Message: Starting lightdm-gtk-greeter 2.0.1 (Aug  7 2015, 01:24:18)
   ** Message: [Configuration] Reading file: /etc/lightdm/lightdm-gtk-greeter.conf.d/01_ubuntu.conf
   ** Message: [Configuration] Reading file: /etc/lightdm/lightdm-gtk-greeter.conf.d/30_xubuntu.conf
   ** Message: [Configuration] Reading file: /etc/lightdm/lightdm-gtk-greeter.conf
   Invalid MIT-MAGIC-COOKIE-1 keyupstart: indicator-application main process (1991) killed by TERM signal
  LightdmGreeterLogOld:
   ** Message: Starting lightdm-gtk-greeter 2.0.1 (Aug  7 2015, 01:24:18)
   ** Message: [Configuration] Reading file: /etc/lightdm/lightdm-gtk-greeter.conf.d/01_ubuntu.conf
   ** Message: [Configuration] Reading file: /etc/lightdm/lightdm-gtk-greeter.conf.d/30_xubuntu.conf
   ** Message: [Configuration] Reading file: /etc/lightdm/lightdm-gtk-greeter.conf
   upstart: indicator-application main process (1537) killed by TERM signal
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 004: ID 0bda:0821 Realtek Semiconductor Corp. 
   Bus 001 Device 003: ID 046d:c05a Logitech, Inc. M90/M100 Optical Mouse
   Bus 001 Device 002: ID 046d:c31d Logitech, Inc. Media Keyboard K200
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
  Package: xorg 1:7.7+7ubuntu4
  PackageArchitecture: amd64
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.2.0-16-generic root=UUID=881c90c8-ac82-4df6-98d7-83045b0f9c1b ro rootflags=subvol=@ quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
  Tags:  wily ubuntu
  UdevLog: Error: [Errno 2] Datei oder Verzeichnis nicht gefunden: '/var/log/udev'
  Uname: Linux 4.2.0-16-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip libvirtd lpadmin plugdev sambashare scanner sudo video www-data
  _MarkForUpload: True
  dmi.bios.date: 07/16/2015
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: P1.10
  dmi.board.name: N3150-NUC
  dmi.board.vendor: ASRock
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: To Be Filled By O.E.M.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP1.10:bd07/16/2015:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnN3150-NUC:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.name: To Be Filled By O.E.M.
  dmi.product.version: To Be Filled By O.E.M.
  dmi.sys.vendor: To Be Filled By O.E.M.
  version.compiz: compiz N/A
  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
  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: Mon Oct 19 09:19:29 2015
  xserver.configfile: default
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   
  xserver.version: 2:1.17.2-1ubuntu9

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