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Message #14329
[Bug 1305586] Re: Lock screen is unusable when some windows have a keyboard/mouse grab
Andrea,
That's why I've written "some"...
Basically it happens for the windows that don't emit a NotifyGrab event to the server.
And the problem is that X doesn't guarantee that this happens when a grab is set.
So, while in some cases (like the gnome-keyring box) we can still get an
NotifyWhileGrabbed event that is enough for us to know that it's
grabbing, in other ones (like vbox), there's not much other way than
trying to grab/ungrab the root window to check if the screen is already
grabbed or not. :(
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https://bugs.launchpad.net/bugs/1305586
Title:
Lock screen is unusable when some windows have a keyboard/mouse grab
Status in Unity:
Triaged
Status in “unity” package in Ubuntu:
Confirmed
Bug description:
My screen just timed out and locked when a password prompt which had a
grab was displaying.
I couldn't type my password or interact with the indicators.
gnome-screensaver just refuses to lock in this situation, perhaps
unity could do the same unless it's possible to remove and readd the
grabs yourself, but I don't think XLib lets you do that (you can only
remove your own grabs AFAIK).
TEMPORARY WORKAROUND TO LOGIN AGAIN:
Click on the guest session
Once the guest session is started log out
This takes you back to the lightdm session screen you can then login to your user session and it be in the same state
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: unity 7.2.0+14.04.20140409-0ubuntu1 [origin: unknown]
ProcVersionSignature: Ubuntu 3.13.0-23.45-generic 3.13.8
Uname: Linux 3.13.0-23-generic x86_64
ApportVersion: 2.14.1-0ubuntu1
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CrashDB: unity
CurrentDesktop: Unity
Date: Thu Apr 10 09:39:45 2014
InstallationDate: Installed on 2012-10-07 (549 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Beta amd64 (20121007)
SourcePackage: unity
UpgradeStatus: Upgraded to trusty on 2013-05-07 (338 days ago)
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