Version: (using KDE 4.1.3) Compiler: GCC 4.3.2 Target: x86_64-unknown-linux-gnu Configured with: ../gcc-4.3.2/configure --prefix=/usr --libexecdir=/usr/lib --enable-shared --enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu --enable-languages=c,c++,fortran,objc,treelang --disable-multilib --enable-c99 --enable-long-long Thread model: posix OS: Linux Installed from: Compiled From Sources Sometimes something happens to fonts and they are displayed with big tension and glyths sometimes overlay one another (see the following screenshot).
Created attachment 28752 [details] Screenshot displaying the fonts artifacts
Hello, Can you reproduce the bug with another font? And what is the one you are currently using? Thanks.
This is DejaVu Sans, 10. I will try to test it with another fonts.
DejaVu sans should be fine. I think this should be a Qt bug as it is the task of Qt to render fonts.
Well, I tried Liberation Sans just now for some time and there were no such artifact with it... But it's a little bit less of size.
It seems to be old version DejaVu bug. I've just downloaded DejaVu Fonts v. 2.27 and built it manually with new specs, and it works just fine everywhere. I'll close this. Thank you for support.
Sorry, I was too fast to close it. Unfortunately, the bug appeared again after the next start of KDE. I can't say the reason, but I noticed, that in GTK apps there's not any artifacts, but fonts are displayed there different way, with another style of antialiasing. Maybe antialiasing is the problem? Also, it seems to be only for Cyrillic fonts and more often in Plasma apps. For example, no such problems in Dolphin or Kopete.
QT4 and KDE4 hinting (antialiasing) problems are already fixed in Qt4.5 . Look at bug 155547 :)