Bug 53983

Summary:	very slow scrollspeed in Solaris 2.6
Product:	[Applications] konsole	Reporter:	Steve Evans <stevee>
Component:	general	Assignee:	Konsole Developer <konsole-devel>
Status:	RESOLVED FIXED
Severity:	normal	CC:	strobert
Priority:	NOR
Version:	unspecified
Target Milestone:	---
Platform:	Compiled Sources
OS:	Solaris
Latest Commit:		Version Fixed In:

Description Steve Evans 2003-02-03 12:28:53 UTC

Version:            (using KDE KDE 3.1)
Installed from:    Compiled From Sources
Compiler:          gcc 3.2 
OS:          Solaris

The scrolling speed of konsole is *very* slow. Each line can be seen as it is repainted. This did not happen with KDE3.0. It makes konsole unusable.

Comment 1 Steve Evans 2004-05-11 10:44:25 UTC

This still happens in 3.2.2

Comment 2 Steven Roberts 2004-12-08 04:24:51 UTC

I see this as well under FC1, gcc 3.3.2, rebuilt SRPMSs from the FC2 release (so roughly rebuilt from sources).

I fired up an xterm and it is MUCH faster (maybe 5 times as fast) in line refresh speed (done pageup/down and line up/down in less).

Comment 3 Steven Roberts 2004-12-14 19:57:46 UTC

Not sure if the Solaris builds are using xft, but got a pointer to try running 'konsole --noxft' (turns off antialiasing of the fonts).  now runs MUCH faster (basically on par with an xterm).

Comment 4 Jukka Laurila 2005-03-07 00:27:28 UTC

I also see very slow font rendering when using antialiasing, with KDE 3.3.2, from Debian unstable. Switching between tabs and printing text is very slow when antialiasing is in use. Turning antialiasing off with --noxft fixes the problem: font rendering speeds up immensely. I would still like to have antialiasing, though; why is it so slow?

Comment 5 Kurt Hindenburg 2005-03-07 20:16:29 UTC

Comment #4: Are you also using Solaris?  The only thing I can do is ask on the KDE-solaris mailing list.  Perhaps someone there has an idea.,,

Comment 6 Robert Knight 2006-07-27 00:09:53 UTC

Lots of optimisations in this area recently, not to mention a completely new painting engine & framework in Qt 4 - so hopefully this should be fixed in Konsole for KDE4.

Please reopen if it turns out to be a problem still.