*** This bug is a duplicate of bug 1532508 ***
https://bugs.launchpad.net/bugs/1532508
Thank you for taking the time to report this bug and helping to make
Ubuntu better. This particular bug has already been reported and is a
duplicate of bug 1532508, so it is being marked as such. Please look at
the other bug report to see if there is any missing information that you
can provide, or to see if there is a workaround for the bug.
Additionally, any further discussion regarding the bug should occur in
the other report. Feel free to continue to report any other bugs you may
find.
** This bug has been marked a duplicate of bug 1532508
Screen contents revealed briefly on resume, before even unlocking
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https://bugs.launchpad.net/bugs/1842668
Title:
Workspace view is showing before unlocking 19.04
Status in gnome-shell package in Ubuntu:
Confirmed
Bug description:
This is sort of a strange issue and I'm open to any discussion on how
to further investigate. I lock my screen using the Gnome lock, then go
away for a few hours. When I return to wake up my computer, an
instance of my desktop from some time ago actually shows for a second
or two. After this, the lock screen lowers, prompting for a password.
This is weird. I swear this was an issue a few years ago and I
remember a blog post about it that was really popular, but it seemed
like it was taken super seriously and got fixed within a few months. I
feel like this is a major security issue because something is caching
my screen instance and is actually able to show it to a user before
unlock. The only thing is I can't seem to find the posting, or any
note that it was an issue at all. I specifically remember the post
mentioned something about porn as the captured desktop image.
Again, I can't seem to replicate, and I don't know what program runs
the lock. I'd love to do a log dump if someone can point me to
something to capture. I'm just not sure how to describe the issue, and
I can't really capture the issue with screenshots.
System Details
Acer Aspire TC-885-ACCFLi3O
19.04 64 bit
Processor: Intel® Core™ i3-8100 CPU @ 3.60GHz × 4
GNOME 3.32.1
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