Bug 304542 - windows are very hard to move using tittlebar mouse dragging
Summary: windows are very hard to move using tittlebar mouse dragging
Status: RESOLVED DUPLICATE of bug 304249
Alias: None
Product: kwin
Classification: Plasma
Component: core (show other bugs)
Version: 4.9.0
Platform: Gentoo Packages Linux
: NOR normal
Target Milestone: ---
Assignee: KWin default assignee
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2012-08-04 11:04 UTC by Denis M. (Phr33d0m)
Modified: 2012-08-06 11:01 UTC (History)
2 users (show)

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Description Denis M. (Phr33d0m) 2012-08-04 11:04:01 UTC
Hello, this is something very annoying I'm hitting with KDE 4.9 on 3 different systems of mine.
If you want to move a window or unmaximize it and then muve it, there is a (big) delay until it starts to move the window if you try to select the upper side of the tittle bar.
If you select the lower part of the tittle bar - it works fast as expected.

Reproducible: Always

Steps to Reproduce:
1. Open for example dolphin
2. Try dragging the tittlebar of the window with the mouse (preferibly on the upper side of the tittlebar)
3. You should notice a big delay



I've uploaded a (very) short (unlisted) video on youtube (link here: http://www.youtube.com/watch?v=gXBb5wV6dFs ) that shows exactly the behaviour I'm trying to explain.

I've tried 5 different themes and the same bad behaviour is noticed.

Regards.
Comment 1 Denis M. (Phr33d0m) 2012-08-04 11:09:20 UTC
After a couple of more tests, it seems there's no such a problem if using the default Oxygen window decoration. Any other window decorations present the problem described above.
Comment 2 Akkarin 2012-08-04 11:26:21 UTC
Hi, I'm writing to confirm this bug, and its repreducability. When using KDE 4.9 and using any window decorations that use transparency, if you attempt to use the window's titlebar to move any given window, the window will lag in place for a few seconds, then jump to your cursor. This makes it very difficult to use, as the lag is at least a couple seconds before the window starts to move and the positioning of the window after the lag is a bit unpredicable.  I tested a bunch of different windows decorations and any decoration with transparency seems to cause the issue, the default ones, like Oxygen, are fine.

I should add that when you drag a window by its pane (in places where this is possible), instead of the titlebar, there is no lag when moving the window.
Comment 3 Martin Flöser 2012-08-05 06:15:24 UTC
already fixed in 4.9.1, I'll write a blog post today on how to fix it in 4.9.0

*** This bug has been marked as a duplicate of bug 304249 ***
Comment 4 darthanubis 2012-08-06 11:01:12 UTC
(In reply to comment #3)
> already fixed in 4.9.1, I'll write a blog post today on how to fix it in
> 4.9.0
> 
> *** This bug has been marked as a duplicate of bug 304249 ***

May I suggest you add rss syndication to your blog?

Thank you for you work.