** Changed in: gdm
Status: Unknown => New
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https://bugs.launchpad.net/bugs/1820423
Title:
monitors.xml is not parsed or applied correctly after reboot or
shutdown
Status in gdm:
New
Status in gdm3 package in Ubuntu:
Incomplete
Status in gnome-shell package in Ubuntu:
Incomplete
Bug description:
WORKAROUND: replace gdm3 with slick-greeter + lightdm-settings +
gnome-screensaver + numlockx(optionally)
TL;DR
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 4K 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, upon 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(slick-greeter) fixes the issue and is repeatedly provable
through multiple reboots or changes to the logical layout of the
screens in the 'Displays' settings of gnome-control-center.
ERRORS(syslog) = "Failed to get current display configuration state:
GDBus.Error:org.freedesktop.DBus.Error.NameHasNoOwner: Name
"org.gnome.Mutter.DisplayConfig" does not exist"
gnome-shell[3007]: JS ERROR: Exception in callback for signal: loaded:
TypeError: monitor is
null#012_prepareStartupAnimation@resource:///org/gnome/shell/ui/layout.js:653:17#012wrapper@resource:///org/gnome/gjs/modules/_legacy.js:82:22#012_loadBackground/signalId<@resource:///org/gnome/shell/ui/layout.js:608:13#012_emit@resource:///org/gnome/gjs/modules/signals.js:128:27#012_init/id<@resource:///org/gnome/shell/ui/background.js:512:17
CAUSE = clean install of Ubuntu 18.10(4.18.0-16-generic #17-Ubuntu SMP
Fri Feb 8 00:06:57 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux), attach
VGA as primary monitor and HDMI(wireless Tx) as secondary to projector
and then apply custom monitor positioning using g-c-c "Displays"
panel.
RESULT = 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.
ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: gdm3 3.30.1-1ubuntu5.1
ProcVersionSignature: Ubuntu 4.18.0-16.17-generic 4.18.20
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)
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