*** This bug is a duplicate of bug 390989 ***
https://bugs.launchpad.net/bugs/390989
** This bug has been marked a duplicate of bug 390989
[SecurityRoadmap] Locked screen shows the desktop
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https://bugs.launchpad.net/bugs/908365
Title:
Desktop is shown when user comes back when screenlock/blank is
activated
Status in “gnome-screensaver” package in Ubuntu:
New
Bug description:
When I either lock the screen or it locks by itself (and goes blank),
when I come back and move the mouse is shows the desktop & open
windows for about a second before it blanks again and then asks for
the password. This started happening with Ubuntu 11.04 after an
upgrade from 10.10; I was hoping it would go away with an upgrade to
11.10 but this was not the case.
Here is the info you asked for:
$ lsb_release -rd
Description: Ubuntu 11.10
Release: 11.10
$ apt-cache policy gnome-screensaver
gnome-screensaver:
Installed: 3.2.0-0ubuntu1
Candidate: 3.2.0-0ubuntu1
Version table:
*** 3.2.0-0ubuntu1 0
500 http://ch.archive.ubuntu.com/ubuntu/ oneiric/main i386 Packages
100 /var/lib/dpkg/status
What is expected:
1) The screen goes blank & locks
2) The user comes back and moves the mouse
3) The screen stays blank and the password dialog comes up, the user does not
see anything else
What happens:
1) The screen goes blank & locks
2) The user comes back and moves the mouse
3) The screen shows the desktop for a second (and any windows open at the
time), then it blanks again and shows the password dialog.
I believe this is a security issue too, although one could argue a
small one, but it allows someone who has physical access to the PC to
see the screen for a second even when it is locked. I will not flag is
as a security issue though, I'll let the Ubuntu team decide if if is
considered one by their standards.
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