Public bug reported:
Hello Team,
I have a Dell XPS 15 9500 laptop with the Dell WD19S Docking station and Ubuntu
20.04 LTS.
Actually, I have many problems with external monitors. Let me explain:
The WD19S docking station has 3 outputs for monitors: 2 Display Port and
1 HDMI port.
The ideal configuration for me is to use the 2 DisplayPort connectors
with 2 external monitors AND the display of the laptop.
Problem 1:
If I use ONLY the HDMI port, the resolution of the external monitor is 3840 x
2160 (16:9) and this works without any problem.
If I connect the same monitor using a single DisplayPort connector, the
resolution is 2560 x 1440 (16:9). Also, the size of the screen is
different: with HDMI the monitor is 28'' but when I use the DisplayPort
connector the size is 27''
Monitor is Samsung U28E570D
Problem 2:
When I connect two monitors with DP the gnome utility becomes crazy (see
attached image, ) and only one monitor works.
Note: I'm using two equal monitors: Samsung U28E570D
Thank you!
Marco
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.14.0-1027-oem 5.14.0-1027.30
ProcVersionSignature: Ubuntu 5.14.0-1027.30-oem 5.14.21
Uname: Linux 5.14.0-1027-oem x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27.21
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Mon Mar 21 12:47:17 2022
SourcePackage: linux-signed-oem-5.14
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: linux-signed-oem-5.14 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal
** Attachment added: "single_external_display_with_hdmi.png"
https://bugs.launchpad.net/bugs/1965749/+attachment/5571262/+files/single_external_display_with_hdmi.png
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https://bugs.launchpad.net/bugs/1965749
Title:
Issues when connecting 2 DP external monitors
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