https://bugzilla.redhat.com/show_bug.cgi?id=2464702
Bug ID: 2464702
Summary: Significant font rendering regression from 2.13.3
Product: Fedora
Version: 44
Hardware: x86_64
URL: https://i.ibb.co/7trvTHgb/ezgif-com-animated-gif-maker
.gif
OS: Linux
Status: NEW
Component: freetype
Keywords: Desktop, Regression, Upgrades
Severity: medium
Assignee: [email protected]
Reporter: [email protected]
QA Contact: [email protected]
CC: [email protected], [email protected],
[email protected], [email protected],
[email protected], [email protected]
Target Milestone: ---
Classification: Fedora
Having upgraded Fedora 43 which used FreeType 2.13.3, to Fedora 44, which uses
2.14.3 (issue was present even on 2.14.1), I noticed this regression in how the
glyphs are displayed, new rendering feels like something that used to be a
thing in Ubuntu 8.04, but certainly not on modern systems.
Current workaround is this:
```
sudo dnf swap freetype freetype --disablerepo="*" --enablerepo=ol10_base
sudo tee /etc/yum.repos.d/freetype.repo > /dev/null << 'EOF'
[ol10_base]
name=Oracle Linux 10 FreeType
baseurl=https://yum.oracle.com/repo/OracleLinux/OL10/baseos/latest/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-oracle-ol10
priority=200
includepkgs=freetype*
EOF
[fedora]
exclude=freetype*
[updates]
exclude=freetype*
sudo rpm --import RPM-GPG-KEY-oracle-ol10
sudo cp RPM-GPG-KEY-oracle-ol10 /etc/pki/rpm-gpg/
```
I've put an example which displays the problem clearly as a GIF in the URL
section.
In my Mousepad example, do notice the kerning anomalies ("ar" in "Search", "ow"
in "Following"), crude rendering (like outlying "m" letters), lack of
uniformity, and so on.
I find it interesting that other distributions don't have this problem as
prevalent, as Fedora currently has it, however, it's objectively true that
FreeType developers did change some functionality in terms of rendering. I
provide the steps to reproduce below, which shows the most noticeable immediate
difference. This regression is also visible on Qt applications, such as KDE
Connect as well as in PeaZip Qt version.
Reproducible: Always
Steps to Reproduce:
1. Install Mousepad and xsettingsd
2. Set the font to Monospace Regular 9 (aka Noto Sans Mono Regular VF 9)
3. Take a look at text (open a file)
4. Quit Mousepad
5. Create .xsettingsd file in your home folder, then launch xsettingsd
6. Open again, take a look at text
7. There are visible differences, which many applications otherwise have with
new FreeType versions
Actual Results:
Rendering looks off, badly rasterized with weird kerning
Expected Results:
Rendering should be closer to Fedora 43
Additional Information:
I tried messing around with Cairo, Harfbuzz and other system libraries, however
my testing caught the culprit in FreeType, because downgrading to FreeType
2.13.3, or even FreeType 2.13.2 fixed the issue.
I should also mention that I use a 1080p 27" monitor.
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