Bug 246381

Summary: Painting errors can be provoked
Product: [Applications] konsole Reporter: Josef Spillner <spillner>
Component: generalAssignee: Konsole Developer <konsole-devel>
Status: RESOLVED REMIND    
Severity: normal CC: adaptee
Priority: NOR    
Version: unspecified   
Target Milestone: ---   
Platform: Debian testing   
OS: Linux   
Latest Commit: Version Fixed In:
Attachments: Garbled terminal output

Description Josef Spillner 2010-07-31 22:52:23 UTC
Created attachment 49716 [details]
Garbled terminal output

Version:           2.9.7 (using KDE 4.4.4) 
OS:                Linux

When I run irssi in yakuake and switch the channel just after telling yakuake to show again after it was hidden, it is possible to turn a section of the terminal into garbage. This is against the notion of flicker-freeness which was promised with Qt 4 ;)
The attached screenshot gives an example how irssi with #kde-brasil looks in yakuake when this happens.

Reproducible: Didn't try




OS: Linux (x86_64) release 2.6.32-3-amd64
Compiler: cc
Comment 1 Eike Hein 2010-07-31 22:57:42 UTC
Reassigning to Konsole as Yakuake isn't responsible for the terminal area.

(It's most likely a graphics driver bug though.)
Comment 2 Josef Spillner 2010-07-31 23:30:58 UTC
If it helps: Xorg uses the Radeon driver. I might also try RadeonHD or VESA at some point, and in parallel try to reproduce it on a machine with embedded Intel graphics.
Comment 3 Josef Spillner 2010-08-02 08:01:25 UTC
Apparently this is not an issue with the graphics driver, or all drivers suffer from the same issue. Both with NV and with intel the bug can easily be reproduced. Just open two terminals and switch between them while unhiding the Yakuake window. I haven't yet seen this effect with Konsole because there's no hide/unhide function in it.
Comment 4 Jekyll Wu 2011-08-27 01:02:52 UTC
Can't reproduce it with KDE-4.7.0.

Feel free to reopen if this still happens in recent version.