[Bug 242266] New: Random screen saver, forbidden "manipulate screen", sometimes uses Flipscreen3d

[Christopher Neufeld]

https://bugs.kde.org/show_bug.cgi?id=242266

           Summary: Random screen saver, forbidden "manipulate screen",
                    sometimes uses Flipscreen3d
           Product: kde
           Version: unspecified
          Platform: Compiled Sources
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: unassigned-bugs at kde.org
        ReportedBy: kdebugs at cneufeld.ca


Version:           unspecified (using Devel) 
OS:                Linux

I have set my screensaver to "random", with the condition that it not include
savers that manipulate the screen.  Recently, I've seen the screen saver start
up with a saver that does retain the screen contents.  The screen saver is
Flipscreen3d, or another one that behaves exactly the same way.  This screen
saver should have been forbidden from starting up.  This is a potential
security problem, as the settings were deliberately chosen to prevent the
screen contents from being visible once the screen saver started up.

I note that kdeartwork/kscreensaver/kxsconfig/ScreenSavers/flipscreen3d.desktop
has this line in it:
X-KDE-Type=OpenGL;ManipulateScreen

so either that line is not being correctly parsed, that setting is being
ignored, or there is another screensaver that looks like flipscreen3d but which
doesn't have this option set.

Reproducible: Sometimes

Steps to Reproduce:
Set up the screen saver for "random", adjust its options to forbid screen
savers that manipulate the screen.  Set a low timeout on the screen saver, then
watch it start up over and over again until it hits the Flipscreen3d.  When
that happens, the desktop image will appear to recede, being surrounded by a
dark border, after which time it will start to flip through the void like a
playing card printed with the desktop contents.

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