[Konsole-devel] [Bug 163176] konsole paints wrong when scrolling upwards

[Reuben Martin]

http://bugs.kde.org/show_bug.cgi?id=163176


Reuben Martin reuben m gmail com changed:

           What    |Removed                     |Added
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                 CC|                            |reuben.m at gmail.com




--- Comment #83 from Reuben Martin <reuben m gmail com>  2009-02-09 01:02:23 ---
Same issue.

Gentoo, GeForce4 MX 440. xorg-server-1.5.3-r2 (plus patch to fix a bug when
using xfs), latest nvidia drivers (96.43.10)

Have only been able to fix it when the composite/Xdamage extensions are not
enabled (i.e. when I connect remotely using NX)

Happens with Konsole, Yakuake, and Plasma menus / desktop folder views.
Possibly other places, I have only recently started using KDE4...

It kinda seems there is an image buffer used that looses the image data for
anything above the visible section of the buffer. When scrolling up, it has to
repopulate the buffer and can't do it fast enough, so the old data in the
buffer is getting dumped to the display. Furthermore, that garbage is now part
of the buffered image and stays there when scrolling back down, until an event
forces the display to be updated, at which point it is corrected.

Very Annoying.


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