gnome panels move to inactive display in multimonitor setup when displays are "put to sleep"

Bug #712687 reported by toobuntu on 2011-02-03
10
This bug affects 2 people
Affects Status Importance Assigned to Milestone
gnome-panel (Ubuntu)
Low
Unassigned
gnome-power-manager (Ubuntu)
Undecided
Unassigned

Bug Description

Binary package hint: gnome-power-manager

gnome panels disappear from the active display when the display is being "put to sleep," in the case of a multimonitor setup where the external monitor is active and the built-in laptop display is turned off.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: gnome-panel 1:2.30.2-0ubuntu0.2
ProcVersionSignature: Ubuntu 2.6.32-28.55-generic 2.6.32.27+drm33.12
Uname: Linux 2.6.32-28-generic i686
Architecture: i386
Date: Thu Feb 3 14:05:49 2011
EcryptfsInUse: Yes
ProcEnviron:
 SHELL=/bin/bash
 LANG=en_US.utf8
SourcePackage: gnome-panel
---
Architecture: i386
DistroRelease: Ubuntu 10.04
EcryptfsInUse: Yes
GnomeSessionIdleInhibited: No
GnomeSessionInhibitors: None
GnomeSessionSuspendInhibited: No
MachineType: Sony Corporation VGN-TX650P
Package: gnome-power-manager 2.30.0-0ubuntu1
PackageArchitecture: i386
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdLine: BOOT_IMAGE=/vmlinuz-2.6.38-10-generic root=/dev/mapper/hostname-root ro splash quiet
ProcEnviron:
 SHELL=/bin/bash
 LANG=en_US.UTF-8
 LANGUAGE=en_US:en
ProcVersionSignature: Ubuntu 2.6.38-10.46~hostname1-generic 2.6.38.7
Tags: lucid
Uname: Linux 2.6.38-10-generic i686
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare staff
dmi.bios.date: 08/05/2005
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: R0031V1
dmi.chassis.type: 10
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrR0031V1:bd08/05/2005:svnSonyCorporation:pnVGN-TX650P:pvrJ0015963:cvn:ct10:cvr:
dmi.product.name: VGN-TX650P
dmi.product.version: J0015963
dmi.sys.vendor: Sony Corporation

toobuntu (toobuntu) wrote :
Pedro Villavicencio (pedro) wrote :

Thank you for taking the time to report this bug and helping to make Ubuntu better. The issue that you reported is one that should be reproducible with the live environment of the Desktop CD of the development release - Oneiric Ocelot. It would help us greatly if you could test with it so we can work on getting it fixed in the next release of Ubuntu. You can find out more about the development release at http://www.ubuntu.com/testing/ . Thanks again and we appreciate your help.

Changed in gnome-panel (Ubuntu):
importance: Undecided → Low
status: New → Incomplete
toobuntu (toobuntu) wrote :

Actually, I have some more information. This is with a multimonitor setup: laptop and external VGA. The external monitor was set to on and the laptop display turned to off. I now think this may be an issue triggered, at least, by gnome-power-manager. Screensaver is set to blank, but the timeout for powering off the display is shorter. When I lock the screen and is powers off, this issue does not occur. When the screen is powered off by the inactivity timeout, the laptop screen is reactivated upon the subsequent power on and the gnome-panels appear there. This is annoying and disruptive, especially for a still-supported LTS release.

My workaround is to bring up a terminal by pressing Ctrl-Alt-T, and invoking my dirty fix:

$ cat /usr/local/bin/mmfix
#! /bin/sh
set -e
set -u
set -x

# fix for multimonitor setup on ubuntu lucid
 xrandr --output VGA1 --auto --right-of LVDS1
 xrandr --output LVDS1 --off

toobuntu (toobuntu) on 2011-08-17
Changed in gnome-panel (Ubuntu):
status: Incomplete → Invalid
description: updated
toobuntu (toobuntu) wrote :

LVDS1 reactivates when VGA1 is being dimmed just prior to being powered off as a result of the inactivity timer. At the same time, the gnome panels are moved from VGA1 to LVDS1. "Unminimized" application windows remain on VGA1. The workaround described in Comment #3 restores things to how they were and how they are supposed to be.

tags: added: apport-collected
description: updated

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toobuntu (toobuntu) on 2011-08-17
summary: - gnome panels disappear for no apparent reason
+ gnome panels move to inactive display in multimonitor setup when
+ displays are "put to sleep"
Changed in gnome-power-manager (Ubuntu):
status: New → Confirmed
quadra (info06) wrote :

Issue confirmed on a Dell Mini 10 with Ubuntu 11.04

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