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[Hadmut Danisch <hadmut@xxxxxxxxxx>]

Public bug reported:

Hi,

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.

regards

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: xserver-xorg 1:7.7+7ubuntu4
ProcVersionSignature: Ubuntu 4.2.0-14.16-generic 4.2.2
Uname: Linux 4.2.0-14-generic x86_64
ApportVersion: 2.19-0ubuntu1
Architecture: amd64
CurrentDesktop: XFCE
Date: Wed Oct  7 10:01:31 2015
InstallationDate: Installed on 2015-09-03 (33 days ago)
InstallationMedia: Xubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20150825)
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug wily

-- 
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/1503590

Title:
  Trouble with DisplayPort

Status in xorg package in Ubuntu:
  New

Bug description:
  Hi,

  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.

  regards

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: xserver-xorg 1:7.7+7ubuntu4
  ProcVersionSignature: Ubuntu 4.2.0-14.16-generic 4.2.2
  Uname: Linux 4.2.0-14-generic x86_64
  ApportVersion: 2.19-0ubuntu1
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Wed Oct  7 10:01:31 2015
  InstallationDate: Installed on 2015-09-03 (33 days ago)
  InstallationMedia: Xubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20150825)
  SourcePackage: xorg
  UpgradeStatus: No upgrade log present (probably fresh install)

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