monitors.xml is not parsed or applied correctly during login after reboot or shutdown
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Mutter |
New
|
Unknown
|
|||
gdm |
New
|
Unknown
|
|||
gdm3 (Ubuntu) |
Triaged
|
Low
|
Unassigned | ||
mutter (Ubuntu) |
Incomplete
|
Low
|
Unassigned |
Bug Description
WORKAROUND
Replace gdm3 with slick-greeter + lightdm-settings + gnome-screensaver + numlockx(
TL;DR
Correct positioning and working of multiple displays until reboot or shutdown and then subsequent login from gdm3. HDMI monitor(projector) goes blank and the VGA monitor only shows 'Secondary' monitor screen without any user visible controls or windows as they are all being painted to the now blanked 'Primary' HDMI connected display.
REPRODUCTION
After a clean install of Ubuntu 18.10, connecting a FHD(1920x1080) LED monitor to the VGA port of a DELL Optiplex 390 desktop tower, connecting a wireless HDMI Tx/Rx(LKV HDbitT-4K) to the HDMI port with a FHD projector and then configuring the logical monitor layout in the "Displays" settings dialog, I can successfully create and use a multi monitor setup in my current session.
However, after a reboot or power cycle of the computer and a successful login from GDM(gdm3), the HDMI goes dark(blank?) and the VGA monitor shows as 'Secondary' monitor even though I set it as 'Primary' in the "Displays" dialog.
The monitors.xml file, attached, shows the correct layout and survives the reboot without alteration.
I am unable to see anything on the 'Primary' display, which has incorrectly been given to the HDMI projector. Unseating the HDMI cable does not restore the VGA to 'Primary' display automatically and I must reboot the computer while leaving the HDMI unplugged in order to restore my ability to see the 'Primary' display on the VGA connection.
Replacing GDM(gdm3) with LightDM(
ERRORS(syslog)
"Failed to get current display configuration state: GDBus.Error:
gnome-shell[3007]: JS ERROR: Exception in callback for signal: loaded: TypeError: monitor is null#012_
ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: gdm3 3.30.1-1ubuntu5.1
ProcVersionSign
Uname: Linux 4.18.0-16-generic x86_64
ApportVersion: 2.20.10-0ubuntu13.2
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Sat Mar 16 13:50:52 2019
InstallationDate: Installed on 2019-03-07 (8 days ago)
InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.3)
SourcePackage: gdm3
UpgradeStatus: No upgrade log present (probably fresh install)
description: | updated |
tags: | added: multimonitor |
description: | updated |
description: | updated |
Changed in gdm: | |
status: | Unknown → New |
summary: |
- monitors.xml is not parsed or applied correctly after reboot or shutdown + monitors.xml is not parsed or applied correctly during login after + reboot or shutdown |
description: | updated |
description: | updated |
description: | updated |
affects: | gnome-shell (Ubuntu) → mutter (Ubuntu) |
Changed in gdm3 (Ubuntu): | |
status: | Incomplete → Triaged |
Changed in gnome-shell: | |
status: | Unknown → New |
affects: | gnome-shell → mutter |
Thank you for your bug report. What's the issue exactly? The configuration is not restored in the session after logging? Or it it only about the login screen? Lightdm doesn't import the session configuration either so that's not really a workaround solution?