https://bugzilla.redhat.com/show_bug.cgi?id=1965684
Bug ID: 1965684
Summary: Fontconfig & Firefox font issues on KDE Spins since
F32
Product: Fedora
Version: 34
Hardware: x86_64
Status: NEW
Component: fontconfig
Assignee: tagoh(a)redhat.com
Reporter: pimk1n(a)gmx.com
QA Contact: extras-qa(a)fedoraproject.org
CC: ajax(a)redhat.com, caillon+fedoraproject(a)gmail.com,
fonts-bugs(a)lists.fedoraproject.org,
gnome-sig(a)lists.fedoraproject.org,
i18n-bugs(a)lists.fedoraproject.org, mclasen(a)redhat.com,
pnemade(a)redhat.com, rhughes(a)redhat.com,
rstrode(a)redhat.com, sandmann(a)redhat.com,
tagoh(a)redhat.com
Target Milestone: ---
Classification: Fedora
Created attachment 1787942
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https://bugzilla.redhat.com/attachment.cgi?id=1787942&action=edit
reddit.com poor font rendering
Description of problem:
Since F32 the KDE Spin has required manual creation of a local fontconfig in
order to restore font rendering quality in Firefox back to standards seen in
prior releases.
Version-Release number of selected component (if applicable):
F32 KDE onwards, Firefox 78 onwards.
How reproducible:
100% F32 KDE, F33 KDE, F34 KDE Spin
Reproducible with Fedora packaged Firefox, mozilla flatpak and direct Mozilla
download.
Confirmed on various hardware, all under X11.
Steps to Reproduce:
1. Open Firefox (KDE Spin)
2. Observe lack of smooth font rendering. eg:
https://old.reddit.com,
https://bugzilla.redhat.org
3.
Actual results:
Poor quality font rendering, see screenshots.
Expected results:
Better quality font rendering, as seen in earlier Fedora 31 KDE and all tested
modern KDE distros.
Additional info:
I have tried reporting this against Firefox since F32 Beta, but no fix.
https://bugzilla.redhat.com/show_bug.cgi?id=1830509
The single end user fix is simple, just create a
~/.config/fontconfig/fonts.conf as below, run fc-cache and restart Firefox.
<?xml version='1.0'?>
<!DOCTYPE fontconfig SYSTEM 'fonts.dtd'>
<fontconfig>
<match target="font">
<edit name="antialias" mode="assign">
<bool>true</bool>
</edit>
<edit name="autohint" mode="assign">
<bool>false</bool>
</edit>
<edit name="hinting" mode="assign">
<bool>true</bool>
</edit>
<edit name="hintstyle" mode="assign">
<const>hintslight</const>
</edit>
<edit name="lcdfilter" mode="assign">
<const>lcddefault</const>
</edit>
<edit name="rgba" mode="assign">
<const>rgb</const>
</edit>
</match>
</fontconfig>
What changed with KDE or Firefox around F32 time that other distros have
accounted for, but Fedora has not?
Would love to see Firefox back to usual quality in KDE spin, by default, so new
users do not get this.
If this is still not the correct package to report against, please point me in
the right direction.
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