[kde] [Bug 325939] New: 'Desktop Switch On-Screen Display' Goes Blank/Black From 'Fade' Effect

[KdeBugs]

https://bugs.kde.org/show_bug.cgi?id=325939

            Bug ID: 325939
           Summary: 'Desktop Switch On-Screen Display' Goes Blank/Black
                    From 'Fade' Effect
    Classification: Unclassified
           Product: kde
           Version: 4.11.2
          Platform: Archlinux Packages
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: unassigned-bugs at kde.org
          Reporter: 7d91fffe at opayq.com

I'm running Arch x64 that I just installed this past week with a KDE Full
Installation.

I added the Pager widget to the taskbar, and in the Pager settings I checked to
enable the 'Desktop Switch On-Screen Display' and the 'Show desktop layout
indicators' is unchecked, then for the shortcuts, 'Switch to Next Desktop' &
'Switch to Previous Desktop' I added 'Ctrl+Alt+Right' & 'Ctrl+Alt+Left'.

Then I noticed when moving back and forth across the desktop with either the
shortcut keys, or placing my mouse over the pager and using the mousewheel, as
soon as the Desktop Switch On-Screen Display dissapeared, if at that exact
moment I used the keyboard or the mouse to move again, this time the Desktop
Switch On-Screen Display would appear blank, black in color.

I really rely on this nice function to help show me which desktop I'm on, and I
do a lot of fast moving around at times, so it's really anonying this goes
blank if you try to move the second it leaves the screen. Typically I have to
wait a few seconds after it's gone to move if I want to see it.

After playing with KDE I realized this is due to the 'Fade' effect being
enabled, as soon as I disable it the problem goes away and never appears again.

Please see the attached screen shot pager_switcher.jpeg

I hope this issue can be fixed soon...

Please see this bug report somone submitted that I commented on, I have a
flcker as it relates to the Popup that appears for each of the 'System
Settings', also because of 'Fade'

https://bugs.kde.org/show_bug.cgi?id=316269#c8

THANKS

Reproducible: Always

Steps to Reproduce:
1.  in the Pager settings check to enable the 'Desktop Switch On-Screen
Display'

2. Uncheck 'Show desktop layout indicators'

3. Create keyboard shortcut keys for 'Switch to Next Desktop' & 'Switch to
Previous Desktop' and use either the shortcut keys, or use a mouse scroll wheel
to move back and forth.

4. As soon as the 'Desktop Switch On-Screen Display' dissappears move again,
try to move the second it dissapears and hopefully it will turn black.

5. I'm using the default settings for the Effects in KDE 4.11.2, nothing has
been changed.
Actual Results:  
'Desktop Switch On-Screen Display' turns black when moving to fast...

Expected Results:  
'Desktop Switch On-Screen Display' should be visable at all times when
moving...

'Desktop Switch On-Screen Display' should be visable at all times when
moving...

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