Ubuntu
gnome-screensaver package

when screen is locked and I open my laptop, a past screen is flashed

Bug #1428307 reported by Ray Kiddy on 2015-03-04

This bug report is a duplicate of: Bug #1768786: Desktop is displayed when resuming from suspend. Edit Remove

This bug affects 2 people

Affects		Status	Importance	Assigned to	Milestone
	gdm (Ubuntu)	New	Undecided	Unassigned
	gnome-screensaver (Ubuntu)	Confirmed	Undecided	Unassigned

Bug Description

I close my laptop, which locks the screen. I then open the laptop. Sometimes I must hit the power button to get the screen to unlock. But before I see the password prompt, I see something else.

I see a past random screen. It goes by quickly, in less than a second. But this is still not acceptable. The screen should not show _any_ information before the user has logged in.

It would not be bad if I could somehow determine what this screen is, because then I would make sure it is blank. But it seems random. Sometimes it seems to be the screen I had visible when I closed up the laptop. Sometimes it seems to be the screen I had visible at one of the last several times I closed the laptop. It does not seem very deterministic. It is hard to know which screen it is going to flash at me before the password prompt.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: gnome-screensaver 3.6.1-0ubuntu13
ProcVersionSignature: Ubuntu 3.13.0-45.74-generic 3.13.11-ckt13
Uname: Linux 3.13.0-45-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.7
Architecture: amd64
CurrentDesktop: Unity
Date: Wed Mar 4 12:30:51 2015
GnomeSessionIdleInhibited: No
GnomeSessionInhibitors: 1: AppId = gedit, Flags = 1, Reason = There are unsaved documents
GsettingsGnomeSession:
org.gnome.desktop.session session-name 'ubuntu'
org.gnome.desktop.session idle-delay uint32 0
InstallationDate: Installed on 2014-01-31 (397 days ago)
InstallationMedia: Ubuntu 12.04.3 LTS "Precise Pangolin" - Release amd64 (20130820.1)
SourcePackage: gnome-screensaver
Symptom: security
Title: Screen locking issue
UpgradeStatus: Upgraded to trusty on 2014-08-14 (202 days ago)

Tags:

Revision history for this message

Ray Kiddy (ray-ganymede) wrote on 2015-03-04:

Dependencies.txt Edit (7.5 KiB, text/plain; charset="utf-8")
GsettingsGnomeLockdown.txt Edit (492 bytes, text/plain; charset="utf-8")
GsettingsGnomePowerManager.txt Edit (1.5 KiB, text/plain; charset="utf-8")
GsettingsGnomeScreensaver.txt Edit (1.1 KiB, text/plain; charset="utf-8")
ProcEnviron.txt Edit (103 bytes, text/plain; charset="utf-8")
XorgConf.txt Edit (591 bytes, text/plain; charset="utf-8")
XorgLog.txt Edit (110.8 KiB, text/plain; charset="utf-8")
XorgLogOld.txt Edit (175.2 KiB, text/plain; charset="utf-8")

Revision history for this message

Launchpad Janitor (janitor) wrote on 2018-12-04:

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in gnome-screensaver (Ubuntu):
status:	New → Confirmed

Revision history for this message

Wes (wesinator) wrote on 2018-12-04:

Still an issue on Ubuntu 18.04 GNOME

This has been happening for a long time, I'm astounded this issue hasn't received more attention.

Revision history for this message

Daniel van Vugt (vanvugt) wrote on 2018-12-05:

This bug report got missed because it was logged in the wrong category. Graphical issues relating to the login and lock screens are still gnome-shell issues.

The problem was mainly discussed in bug 1532508. Then bug 1768786 was opened and it was declared fixed for gnome-shell version 3.28.2-0ubuntu0.18.04.1. Please comment in one of those bugs if you feel the fix isn't working.