Bug 1226433 - Font rendering in the terminal emulator is broken
Summary: Font rendering in the terminal emulator is broken
Alias: None
Product: Fedora
Classification: Fedora
Component: fontconfig
Version: 22
Hardware: x86_64
OS: Other
Target Milestone: ---
Assignee: Akira TAGOH
QA Contact: Fedora Extras Quality Assurance
Depends On:
TreeView+ depends on / blocked
Reported: 2015-05-29 18:42 UTC by Andrew Filippov
Modified: 2015-06-05 23:53 UTC (History)
11 users (show)

Fixed In Version: fontconfig-2.11.94-1.fc22
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2015-06-05 23:53:51 UTC
Type: Bug

Attachments (Terms of Use)
Broken render (115.86 KB, image/png)
2015-05-29 18:42 UTC, Andrew Filippov
no flags Details
fontconfig patterns (4.50 KB, text/plain)
2015-06-01 15:34 UTC, Marek Kašík
no flags Details

Description Andrew Filippov 2015-05-29 18:42:26 UTC
Created attachment 1032273 [details]
Broken render

Description of problem:

Font rendering in the terminal emulator is broken. 

Version-Release number of selected component (if applicable):

Fedora 22, 

How reproducible:

Change the font in the terminal on  Terminus 15. The font will be blurred, incorrectly rendered. This is illustrated by the attached files

Steps to Reproduce:
1. Open terminal emulator
2. Change the font to Terminus 15

Actual Results:  All characters are garbled, blurred.

Expected Results:  Clear font rendering.

Additional info: see attachment

Comment 1 Marek Kašík 2015-06-01 15:34:18 UTC
Created attachment 1033398 [details]
fontconfig patterns

This is probably not a bug. But I'm not sure so I'm reassigning this to fontconfig for their expertise (if this is a bug then a fontconfig one from my point of view).

Basically you are doing this:

pango-view --dpi=96 --font="Terminus 15" --text="[int13h@d500 ~]$ fc-ca" --background=black --foreground=gray

For which fontconfig returns this font '/usr/share/fonts/terminus/ter-116n.pcf.gz' (size 16). I'm not sure why it doesn't return the '/usr/share/fonts/terminus/ter-120n.pcf.gz' because it is 72dpi equivalent of the font of size of 15 for 96dpi.

I've printed FcPattern passed to fontconfig and the resulting FcPattern in pango's pango_fc_patterns_get_font_pattern() function. You can find them in the attached file. The file shows that fontconfig actually gives us the font of size 16 even if we pass to it request for a font of pixel size 20 (size 15).

Comment 2 Fedora Update System 2015-06-02 09:38:11 UTC
fontconfig-2.11.94-1.fc22 has been submitted as an update for Fedora 22.

Comment 3 Fedora Update System 2015-06-04 20:16:01 UTC
Package fontconfig-2.11.94-1.fc22:
* should fix your issue,
* was pushed to the Fedora 22 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing fontconfig-2.11.94-1.fc22'
as soon as you are able to.
Please go to the following url:
then log in and leave karma (feedback).

Comment 4 clee 2015-06-05 15:46:41 UTC
fontconfig-2.11.94-1.fc22 appears to fix the font issues I was having (broken embedded bitmap fonts inside TTF/OTF files). Hooray!

Comment 5 Fedora Update System 2015-06-05 23:53:51 UTC
fontconfig-2.11.94-1.fc22 has been pushed to the Fedora 22 stable repository.  If problems still persist, please make note of it in this bug report.

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