Public bug reported:
Binary package hint: compiz
I have some weird misbehaviour of gnome-screensaver in combination with compiz
fusion in gutsy.
It is not 100% reproductible but happens most of the time.
It looks like compiz does not let the screensaver lock the screen properly:
when the "unlock screen" dialog appears, it does not have the focus: One can
not enter a password to unlock the screen.
What is much worse is that an OTHER window has the focus: with the screen
locked, I was able to enter commands in an opened terminal.
I was even able to see their output thanks to compiz: it lets me cycle through
window, showing me its usual composited alt-tab...
Changing desktop was also possible, but I could not trigger the scale plugin by
going to a screen edge.
The focus seems to come back to the screensaver after a while (but one
can still cycle through other windows and change desktop).
Disabling desktop effects and using plain metacity, everything works as
expected.
It happens at least with the last 3 git snapshots of compiz in gutsy,
AFAIR it did not happen with feisty.
Note: I am tempted to consider this as a security vulnerability as it
allows to circumvent the "protection" offered by a screensaver. Should
it be considered as such ?
output of dpkg -l | grep compiz:
ii compiz 1:0.5.1+git20070626-0ubuntu1
OpenGL window and compositing manager
ii compiz-bcop 0.0.0+git20070612-0ubuntu1
Compiz option code generator
ii compiz-core 1:0.5.1+git20070626-0ubuntu1
OpenGL window and compositing manager
ii compiz-dev 1:0.5.1+git20070626-0ubuntu1
OpenGL window and compositing manager - deve
ii compiz-fusion-plugins-extra 0.0.0+git20070622-0ubuntu1
Collection of extra plugins from OpenComposi
ii compiz-fusion-plugins-main 0.0.0+git20070626-0ubuntu1
Collection of plugins from OpenCompositing f
ii compiz-gnome 1:0.5.1+git20070626-0ubuntu1
OpenGL window and compositing manager - GNOM
ii compiz-plugins 1:0.5.1+git20070626-0ubuntu1
OpenGL window and compositing manager - plug
ii compizconfig-settings-manager 0.0+git20070625-0ubuntu1
Compiz configuration settings manager
ii libcompizconfig-backend-gconf 0.0+git20070620-0ubuntu1
Settings library for plugins - OpenCompositi
ii libcompizconfig0 0.0+git20070626-0ubuntu1
Settings library for plugins - OpenCompositi
ii python-compizconfig 0.0.0+git20070622-0ubuntu1
Compiz configuration system bindings
** Affects: compiz (Ubuntu)
Importance: Undecided
Status: New
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[gutsy] compiz fusion breaking gnome-screensaver behaviour
https://bugs.launchpad.net/bugs/122549
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