Arch Linux

I have the same effects and steps back to qt 4.4. There is a bugreport aboout that Qt habe problems with fontconfig:

http://www.qtsoftware.com/developer/task-tracker/index_html?method=entry&id=195256

It get yesterday the state "resolved" so there is hope for the future but i can't find informations about where be the patch or something else.

@orbisvicis See http://bbs.archlinux.org/viewtopic.php?id=67031 because perhaps some of the solutions there could helps you.

I think that patch is included in qt-4.5.0-4 from testing.

In my case there is no difference with qt-4.5.0-4.

OK, then you have a different problem. Try one of those:
* create a new user (with a clean config)
* use vesa as graphics driver
* disable subpixel rendering for fonts
* if you use nvidia disable the glyphcache

Okay, at first i try different combinations of your hints without any change.

To have no sideeffects from my kdemod3 session i test it with startx+openbox without any "aliasing + subpixel rendering" and the vesa driver. Still again no change.

I will wait if qt 4.5 will be used in other distributions as default and than i will look where is the difference to my configuration. In my case waiting is no problem but i'm a little bit confused about that qt3/gtk2 based apps have no problem with my configuration.

> (but it seems to be just me)

No, it's *not* just you. This is a severe problem and a showstopper for users with vertical displays. Fonts become illegible when you install Qt 4.5 *and* set vertical subpixel hinting. Not many people use a vertical display layout. That's why most users didn't even notice there could be a problem.

Only for the stats: I use vrgb too in my fontconfig settings.

Thanks Andrej for pointing out the problem. The only strange thing is that my last test was without any file lower than 20 in /etc/fonts/conf.d. The only file what i forgot to deactivate during this test was my ~/.Xresources but i thought that this file as not used by qt and i don't use a ~/.fonts.conf because i like it more to config this settings at one place.

Did anyone who is affected by this file a detailed report at qt-software?

@Pierre We be not alone with this problem: https://bugzilla.redhat.com/show_bug.cgi?id=490377 and so i hope one who is a developper can do this because the Qt Bug Report Form ask things what i don't know (Is this ActiveQt or what else -) ).

Because i recognized too late that there is qt 4.5.1 is in testing i compiled it by myself and i can say that the error with using vrgb is gone for me.

Note: I don't use in the copy from abs qt-copy-patches and append a "-opensource" to the end of the configure string. I don't think that this makes a big difference but one dev have to say if this is true.