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Bug 1295061 - Primary monitor not detected correctly with DVI-I and DVI-D ports
Summary: Primary monitor not detected correctly with DVI-I and DVI-D ports
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: mutter
Version: 7.2
Hardware: All
OS: Linux
medium
medium
Target Milestone: rc
: ---
Assignee: Florian Müllner
QA Contact: Desktop QE
URL:
Whiteboard:
Depends On:
Blocks: 1420851
TreeView+ depends on / blocked
 
Reported: 2016-01-01 14:48 UTC by Ashish Shah
Modified: 2021-03-11 14:27 UTC (History)
8 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2019-06-13 15:54:37 UTC
Target Upstream Version:
Embargoed:

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Description Ashish Shah 2016-01-01 14:48:55 UTC 
Description of problem:

Dual head configuration with spanning desktop across two monitors does not detect primary monitor correctly in GDM/GNOME
DVI-I is detected as primary monitor during boot-up and upon login to KDE session.
GDM login screen and GNOME session detects monitor on DVI-D as primary.
GNOME is not detecting primary monitor correctly with DVI-I and DVI-D ports.
Looks like GDM follows the alphabetic order DVI-D as primary in RHEL 7.2 ?
But KDE does select the power-on monitor as primary.

Version-Release number of selected component (if applicable):

RHEL7.2
GNOME 3.14

How reproducible:

Always (with specific hardware)

Steps to Reproduce:
1. Boot up system in GUI mode with dual monitor.
2. On GDM screen login as user to KDE session.


Actual results:

Monitor on DVI-I is detected as primary during boot-up and in KDE session
GDM and GNOME detect DVI-D monitor as primary

Expected results:

GDM/GNOME should also detect monitor on DVI-I as primary

Additional info:

This was working well with RHEL7.1 and earlier, even with RHEL6.
Problem is specific to RHEL7.2
Problem is also specific to dual head setup with DVI-I and DVI-D ports
Configuring monitors.xml to use desired monitor as primary helps to workaround the issue.
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