[kde] [Bug 341189] New: Screen shows for a moment when returning from suspension, before showing log in screen

[kelna91 at gmail.com]

https://bugs.kde.org/show_bug.cgi?id=341189

            Bug ID: 341189
           Summary: Screen shows for a moment when returning from
                    suspension, before showing log in screen
           Product: kde
           Version: 4.14.1
          Platform: Kubuntu Packages
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: kelna91 at gmail.com

When I return from suspension to RAM, the screen shows for a moment, before the
login screen appears. This is a problem because with a camcorder someone could
record this and so be able to see the content of the screen, maybe sensitive
information, on a suspended, locked computer.
I use Kubuntu 14.10 but this happened on 14.04 also.

Reproducible: Sometimes

Steps to Reproduce:
1. Do stuff.
2. Suspend to RAM.
3. Wake the computer by pressing any key.

Actual Results:  
If it happens:
1. Fans start up.
2. After a second or two the screen lights up showing exactly how I left work.
This last only for a tenth of a second or so.
3. Lock screen appears.

If this doesn't happen:
Instead of showing the screen content, some error message appers also for a
moment only. Something like this (I recorded the screen):
usb 3-14: hub failed to enable device, error -22
xhci_hcd 0000:00:14.0: Setup ERROR: setup context command for slot 4.

Expected Results:  
Should not show the screen content (or error messages). After returning from
suspension the only thing one should see is the login screen.

I use a HP notebook.

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