Bug 178417

Summary: new konsole windows flash white before showing up
Product: [Applications] konsole Reporter: Sebastian Kügler <sebas>
Component: generalAssignee: Konsole Developer <konsole-devel>
Status: RESOLVED UNMAINTAINED    
Severity: normal CC: adaptee, aspotashev, bzugmeyer, cpigat242, darkadept, etienne.hilson, francesco.cecconi, haldrik, mail, monstermunch, robertknight, vpiotr, wojtek, worldwide
Priority: NOR    
Version: 2.2   
Target Milestone: ---   
Platform: unspecified   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description Sebastian Kügler 2008-12-22 01:19:36 UTC 
Version:           2.2 (using 4.1.85 (KDE 4.1.85 (KDE 4.2 Beta2)), compiled sources)
Compiler:          gcc
OS:                Linux (i686) release 2.6.27-7-generic

Before a konsole window is showing up, the whole window seems to be painted white, before it becomes transparant. Could be that the window would need to be filled with Qt::Transparant instead of white, but the code looks to complicated for me to find something like this right now.

This is especially visible when fading in konsole windows with translucent background using KWin's effect.

It's especially visible in yakuake, where the terminal doesn't fade in, but gets painted solid white instead of fading in nicely. (There, I've set the animation speed to 0ms in order to not slow down the appearing of the window.

It seems to happen independant from the video driver used, I see this with the nvidia blog, the ATI Catalyst blog and the free radeon driver.
Also, other apps seem unaffected, that's why I'm filing this under "konsole".
Comment 1 Andreas Kuhl 2008-12-26 18:39:55 UTC 
I can confirm this bug, I encounter the same behaviour with Yakuake (kde4 version) and with krunner.
KDE 4.2 Beta 2, Desktop Effects enabled, ATI graphics card with latest fglrx driver.
Comment 2 Andreas Kuhl 2009-03-01 08:13:51 UTC 
Bug is still present in 4.2 final. Any news about this?
Comment 3 Robert Knight 2009-03-01 22:14:46 UTC 
> Bug is still present in 4.2 final. Any news about this?

No.  I haven't looked into it yet.
Comment 4 vpiotr 2009-05-12 14:15:28 UTC 
Confirmed: Qt 4.5.1, KDE 4.2.3, Konsole 2.2.3 on radeon 9200 (xorg driver) as well as on GeForce 6600 (nvidia binary driver).
Comment 5 Mike Kornelson 2009-08-20 00:03:56 UTC 
Still happening: Qt 4.5.2, KDE 4.3.0, Konsole 2.3 on geforce 7900 (nvidia binary driver)
Comment 6 vpiotr 2009-08-20 09:16:11 UTC 
And still here: Qt: 4.5.2, KDE: 4.3.00 (KDE 4.3.0), Konsole: 2.3, GeForce 6600 binary driver
Comment 7 Jonathan Thomas 2009-11-12 03:43:39 UTC 
*** Bug 206693 has been marked as a duplicate of this bug. ***
Comment 8 Sebastian Kügler 2010-01-30 02:30:17 UTC 
Still a problem with Qt 4.6.1 and KDE SC 4.4 rc3, free radeon driver
Comment 9 Jekyll Wu 2011-08-07 01:38:13 UTC 
*** Bug 183829 has been marked as a duplicate of this bug. ***
Comment 10 Jekyll Wu 2011-08-07 19:21:11 UTC 
*** Bug 273304 has been marked as a duplicate of this bug. ***
Comment 11 Jekyll Wu 2012-03-02 15:50:57 UTC 
Any news? 

I can't reproduce any of those reported problems using KDE SC 4.8, Qt 4.8 and Nvidia blob driver 295.20.
Comment 12 Francesco Cecconi 2012-03-02 17:06:20 UTC 
Hi Jekyll,

i can reproduce it with "Minimize Animation" effect. KDE SC 4.8, Qt 4.8 and mesa radeon 8.0.
Comment 13 .X4 2013-07-07 22:59:44 UTC 
Hi,

I have the same problem, disabling transparency, disabling mouseover activation and disabling "let the kwin manage effects" didn't have any effect.

When mouseover activation is enabled, or when I use hotkeys to change the focus to the next terminal, the enter yakuake terminal flashes bright white for a second. (Try that at night.. eye cancer..)

Qt: 4.8.4
KDE: 4.10.4
Yakuake: 2.9.9
Comment 14 bzugmeyer 2013-07-08 18:28:59 UTC 
Same here with konsole/kdebase 4.10.5, Qt 4.8.5, nvidia blob 319.32

Really annoying when using a tiling WM and constantly switching tags/desktops.