Bug 156170

Summary:	1 pixel horizontal border at bottom of screen not drawn correctly (when Desktop Effects are on)
Product:	[Plasma] plasma4	Reporter:	H3g3m0n <H3g3m0n>
Component:	general	Assignee:	Plasma Bugs List <plasma-bugs>
Status:	RESOLVED FIXED
Severity:	normal
Priority:	NOR
Version:	unspecified
Target Milestone:	---
Platform:	Ubuntu
OS:	Linux
Latest Commit:		Version Fixed In:
Attachments:	Screenshot.

Description H3g3m0n 2008-01-19 14:30:30 UTC

Version:           4.0 (using KDE 4.0.0)
Installed from:    Ubuntu Packages
OS:                Linux

I disabled the panel buy editing ~/.kde4/share/config/plasma-appletsrc and commenting out the [Containments][2] section.

Now there is a 1 pixel border at the bottom of the screen, and windows or widgets dragged down end up with a line of the wallpaper drawn over them at the very bottom.

It seems to disappear when the desktop effects are disabled, the color of the line matches the wallpaper although it seems to pickup any applications/widgets that where there when desktop effects gets enabled.

Comment 1 Pino Toscano 2008-01-19 14:47:29 UTC

There is no kicker and kdesktop in KDE 4, but plasma.

Comment 2 Craig Duquette 2008-01-20 00:55:55 UTC

Created attachment 23146 [details]
Screenshot.

I've attached a screenshot of the issue. The line is between the two green
dots. You can see the wallpaper is shown fully transparent here. I brought it
up with Aaron a while back (when the svg changed) and he said it was a due to
QT rendering issue. It's got something to do with an even number of pixels
being stretched into an odd number of pixels area. Ex. a 48px svg image being
stretched for 49px. I believe that was his explanation to this bug, and if
that's the case I'm assuming we could fix the issue by expanding the panel 1 px
so it becomes an even number again.

Comment 3 Marco Martin 2008-01-20 19:54:50 UTC

oh, yeah, this seems to be a bug in QSvg, that occurs when you extract an element id from the svg, once aaron said this should be fixed in qt 4.4, still not tried but i have hope :D
as a side note: the problem is here also when compositing is off, but the black opaque background is hiding it

Comment 4 Marco Martin 2008-02-14 20:04:04 UTC

fixed with qt 4.4, snapshot of 12 Feb 2008