[Bug 253861] New: Half of the task manager panel is black

Gard Spreemann gspreemann at gmail.com
Mon Oct 11 17:21:11 BST 2010


https://bugs.kde.org/show_bug.cgi?id=253861

           Summary: Half of the task manager panel is black
           Product: kde
           Version: 4.5
          Platform: Ubuntu Packages
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: unassigned-bugs at kde.org
        ReportedBy: gspreemann at gmail.com


Created an attachment (id=52420)
 --> (http://bugs.kde.org/attachment.cgi?id=52420)
Screenshot of the half-black panel.

Version:           4.5 (using KDE 4.5.1) 
OS:                Linux

At some resolutions, half of the task manager panel is black. Since an image
speaks a thousand words, see the attached screenshot.

If I use krandrtray to change resolution, the problem often disappears. On
another computer, running KDE 4.4, switching to another resolution and then
back again fixes the panel. I suspect the background is drawn prematurely, and
then when the resolution goes up the panel extends without redrawing the
background. Or there is a race between extending the panel and redrawing the
background when the resolution changes.

On my computer, the problem exists at 1680x1050, on another it's 1900xsomething
that's problematic. There are no rendering glitches, and the two computers use
completely different graphics cards, so I don't think it's a graphics problem.

Reproducible: Always

Steps to Reproduce:
Login to KDE with a resolution of 1680x1050.

Actual Results:  
Half the task manager panel is black.

Expected Results:  
The entire task manage panel has some grayish background.

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