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On 2013-01-29T13:50:45+00:00 Alexey Shvetsov wrote:

If you have 2 videocards e.g.
01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Turks 
[Radeon HD 6670]
02:00.0 VGA compatible controller: NVIDIA Corporation GF106 [GeForce GTS 450] 
(rev a1)

And configured two screens e.g. :0.0 and :0.1 locker-qml will lock only
one screen

Reproducible: Always

Reply at: https://bugs.launchpad.net/ubuntu/+source/kde-
workspace/+bug/1264821/comments/0

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On 2013-02-09T19:19:48+00:00 Adam Ziegler wrote:

Can confirm the same behavior with two X screens across two nVidia cards
- GTX 460 and GTX 465.  Lock screen appears over X screen 0, leaves X
screen 1 untouched, but I can't do anything on either screen (as I would
expect).

May or may not be related, but I also cannot get focus to the password
field, so once the screen is locked, I need to hard-reset kdm to get
back to a workable session.

Reply at: https://bugs.launchpad.net/ubuntu/+source/kde-
workspace/+bug/1264821/comments/1

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On 2013-03-11T17:14:58+00:00 Jens Mohr wrote:

The same here:

- KDE 4.10.1
- two separate screens
- only one screen will locked the other show the session!

When i click the unlock button and wait then i get the focus to the
password field.

Reply at: https://bugs.launchpad.net/ubuntu/+source/kde-
workspace/+bug/1264821/comments/2

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On 2013-04-07T19:04:26+00:00 Jens Mohr wrote:

KDE 4.10.2

no changes!

- two separate screens - only one screen will locked the other show the
session! When i click the unlock button and wait then i get the focus to
the password field.

Reply at: https://bugs.launchpad.net/ubuntu/+source/kde-
workspace/+bug/1264821/comments/3

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On 2015-01-23T11:25:36+00:00 Mgraesslin wrote:

Unfortunately multi-head support is not implemented in the lock screen
infrastructure and I consider it as unlikely that we will implement it
any time soon. It's nowadays difficult to configure (some drivers do not
support such modes any more) and it needs significant changes in our
lock screen architecture to support it. Changes I plan for 5.3 might
make it easier to support such setups in a secure way.

Reply at: https://bugs.launchpad.net/ubuntu/+source/kde-
workspace/+bug/1264821/comments/18

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On 2015-01-23T11:51:41+00:00 Mgraesslin wrote:

*** Bug 329375 has been marked as a duplicate of this bug. ***

Reply at: https://bugs.launchpad.net/ubuntu/+source/kde-
workspace/+bug/1264821/comments/20

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On 2015-01-23T11:59:59+00:00 Mgraesslin wrote:

*** Bug 314533 has been marked as a duplicate of this bug. ***

Reply at: https://bugs.launchpad.net/ubuntu/+source/kde-
workspace/+bug/1264821/comments/21


** Changed in: kdebase-workspace
       Status: Unknown => New

** Changed in: kdebase-workspace
   Importance: Unknown => High

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https://bugs.launchpad.net/bugs/1264821

Title:
  kscreenlock_greet insecure with multiple X screens

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