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Old 02-01-09, 02:43 PM   #25
Linuxhippy
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Default Re: [BUG REPORT] Konsole from KDE4 is unusable with bitmap or with nonAA TrueType fon

Quote:
Originally Posted by marchetto View Post
Are Kopete and Konsole QT engined software?
Sure.
I am currently having a code-walk through their sources, there seem to be some XRender related problems performance wise.
Seems like the guys who wrote that stuff never really benchmarked it. If he would have done, he would have seen how tourturing his code is for Xorg

- Clemens
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Old 02-08-09, 06:46 AM   #26
marchetto
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Default Re: [BUG REPORT] Konsole from KDE4 is unusable with bitmap or with nonAA TrueType fon

Ok I'm here with kde 4.2.0 from factory opensuse repo.

180.27
9500gt
openSuSE 11.1

Problem not solved.
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Old 02-09-09, 04:38 AM   #27
mick232
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Default Re: [BUG REPORT] Konsole from KDE4 is unusable with bitmap or with nonAA TrueType fon

Does it get better with QT 4.5 RC1?
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Old 02-19-09, 12:00 AM   #28
Ivan Mironov
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Default Re: [BUG REPORT] Konsole from KDE4 is unusable with bitmap or with nonAA TrueType fon

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Originally Posted by mick232 View Post
Does it get better with QT 4.5 RC1?
I tested konsole and qt 4.5rc1 with command "time seq 1 1000000":

Terminus 11pt (without AA*): ~78s (and the text is drawn portions about once per second)
Terminus 11pt (with AA*): ~16s
Liberation Mono 10pt (without AA): ~12s
Liberation Mono 10pt (with AA): ~5s

* Terminus is a bitmap font, so it looks exactly same both with AA turned on and off.
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Old 02-21-09, 06:16 AM   #29
artem
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Default Re: [BUG REPORT] Konsole from KDE4 is unusable with bitmap or with nonAA TrueType fon

Related bugs in KDE's bugzilla (duplicates):

http://bugs.kde.org/show_bug.cgi?id=167476
http://bugs.kde.org/show_bug.cgi?id=160467
http://bugs.kde.org/show_bug.cgi?id=172250
http://bugs.kde.org/show_bug.cgi?id=155174

Today I've submitted a bug report straight to Qt (software) - probably they will create a workaround.
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Old 03-06-09, 06:49 PM   #30
marchetto
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Default Re: [BUG REPORT] Konsole from KDE4 is unusable with bitmap or with nonAA TrueType fon

There's still something wrong with konsole, for example if I'm compiling something, so think about make that is putting its output on the bash, many text is scrolling, then in this situation, Xorg process takes 50-90% (of 200%, I've got a dual core).

Very very slow, scrolling konsole at full screen

Last edited by marchetto; 03-09-09 at 11:18 AM.
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Old 03-09-09, 11:19 AM   #31
marchetto
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Default Re: [BUG REPORT] Konsole from KDE4 is unusable with bitmap or with nonAA TrueType fon

There's a problem even while drawing Kopete NON-AA fonts... if you write something then you try to erase with backspace it doesn't show correctely.

Please can someone help or try to write a solution? Is a xorg.conf misconfiguration? Is a qt bug? Is a nvidia driver bug??

THANKS
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Old 03-17-09, 05:36 AM   #32
artem
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Exclamation Re: [BUG REPORT] Konsole from KDE4 is unusable with bitmap or with nonAA TrueType fon

I'm sorry for a long delay but finally I got a reply from Qt developers. They gave me a test-case, unfortunately the code path used by Konsole is different from what Qt engineers have come up with, so I need a help from people who know C++/Linux/Qt.

Qt engineers are willing to help but this test-case has to be altered in such a way so that it has the same performance bug as Konsole (so, basically we have to extract Konsole's text rendering and create a simple example from it).

I'm now attaching the given test-case and if you want this bug to be eliminated ASAP please write to "qt-bugs AT trolltech dot com" with the following message subject: "Re: [Issue N245676] Nonantialiased text is rendered VERY slowly in Linux".
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Old 03-19-09, 06:42 PM   #33
marchetto
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Default Re: [BUG REPORT] Konsole from KDE4 is unusable with bitmap or with nonAA TrueType fon

185.13 is simply AWFUL

180.37 works a little better, but again seems like you're running latest 3d game in dvd, instead, you're just reading a konsole...
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Old 03-21-09, 07:44 AM   #34
marchetto
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Default Re: [BUG REPORT] Konsole from KDE4 is unusable with bitmap or with nonAA TrueType fon

180.41 is awful like 185.13 seems like they work in the same way about this non-AA fonts very very (very) bad issue.
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Old 04-01-09, 02:07 PM   #35
artem
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Default Re: [BUG REPORT] Konsole from KDE4 is unusable with bitmap or with nonAA TrueType fon

Any news on this issue, Plagman/NVIDIA?

It's like three months have passed since you identified the problem, now I'd be glad if something came out as a result.
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Old 04-02-09, 05:05 AM   #36
marchetto
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Default Re: [BUG REPORT] Konsole from KDE4 is unusable with bitmap or with nonAA TrueType fon

Yes it would be nice it has been a long long time.
Last 180.44 stable works quite like 180.37, kopete non-AA fonts has the same issue and konsole is quite crappy.
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