Public bug reported:
On Cosmic dev, I can't use my displayport monitor after logging in to
gdm3. It works for login (displays the login page) after the VT switch
to the session it becomes black. Using CTRL+f1, etc doesn't also show
the console even in my VGA monitor.
Devices:
* Thinkpad x230t with Intel 3rd gen core processor and graphics unit.
* Laptop LCD.
* 4k monitor plugged in to display port.
* 1080p monitor plugged in to vga port.
The graphic's memory is not enough so I have to turn off the Laptop LCD
to power 4k and 1080p monitors. When it boots, I can see the login
screen in the 4k monitor.
To be able to login, what I do is unplug 4k monitor when booting and
logging in. Once session is active, I plugin the 4k monitor.
Thank you for your work/help.
ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: gdm3 3.30.0-0ubuntu1
ProcVersionSignature: Ubuntu 4.17.0-9.10-generic 4.17.17
Uname: Linux 4.17.0-9-generic x86_64
ApportVersion: 2.20.10-0ubuntu9
Architecture: amd64
CurrentDesktop: GNOME
Date: Thu Sep 6 15:13:59 2018
EcryptfsInUse: Yes
InstallationDate: Installed on 2015-09-28 (1073 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
SourcePackage: gdm3
UpgradeStatus: Upgraded to cosmic on 2018-09-05 (0 days ago)
mtime.conffile..etc.gdm3.custom.conf: 2016-08-23T19:40:34.168140
** Affects: gdm3 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug cosmic third-party-packages
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https://bugs.launchpad.net/bugs/1791019
Title:
DisplayPort Monitor works only once and not anymore after switching
VTs
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