Bug 215873

Summary:	When using a bitmap font with anti-aliasing disabled in the profile option, konsole becomes very slow
Product:	[Applications] konsole	Reporter:	gambas <g4mba5>
Component:	general	Assignee:	Konsole Developer <konsole-devel>
Status:	RESOLVED FIXED
Severity:	normal	CC:	vkrevs
Priority:	NOR
Version:	unspecified
Target Milestone:	---
Platform:	Mandriva RPMs
OS:	Linux
Latest Commit:		Version Fixed In:

Description gambas 2009-11-23 20:20:27 UTC

Version:            (using KDE 4.3.2)
OS:                Linux
Installed from:    Mandriva RPMs

In my konsole profiles, I use the font "Terminus", which is a bitmap font.

I noticed that if I uncheck the "anti-aliasing" checkbox in the profile configuration dialog, konsole refresh becomes very slow, when scrolling the window, or minimizing and restoring it: one or two second to refresh one page of a full screen konsole.

If I keep the "anti-aliasing" checkbox checked, speed is normal.

I have a NVidia card and use their driver in version 190.42.

Comment 1 gambas 2010-03-22 21:08:57 UTC

This is apparently a NVidia driver problem. I use now the Nouveau driver, and I don't have that problem (I have others, but this is another story...)

Comment 2 Vadym Krevs 2010-03-25 22:47:01 UTC

Same problem here on openSUSE 11.2 for x86_64 and an ATI video card after upgrade to KDE 4.4.1 from KDE 4.3.5. Konsole from KDE 4.3.5 had no problems with or without aliasing. KOnsole from KDE 4.4.1 is painfully slow.

$ rpm -q konsole
konsole-4.4.1-154.4.x86_64