I get this also, with 14.10 LTS as a host and 14.04 as a VirtualBox
guest. My solution is to programmatically minimise VB by selecting
another TTY (via Ctrl-Alt-F1) and running this script:
WID=`DISPLAY=:0 xdotool search --name "\[Running\]"`
DISPLAY=:0 xdotool windowminimize $WID
That gets the window ID of the VB window and then minimises it. I then
Ctrl-Alt-F7 back to the desktop, click on the sound/clock menu or
something (it seems to free up the focus) and then the password field
will work again.
It's a faff, but at least it works.
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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 Compiz:
Fix Committed
Status in Compiz 0.9.11 series:
In Progress
Status in Unity:
In Progress
Status in Unity 7.2 series:
In Progress
Status in “compiz” package in Ubuntu:
Fix Released
Status in “unity” package in Ubuntu:
In Progress
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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