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[Bug 554935] Re: fontconfig corrupted fonts

To: touch-packages@xxxxxxxxxxxxxxxxxxx
From: john fisher <554935@xxxxxxxxxxxxxxxxxx>
Date: Wed, 08 Apr 2015 21:18:55 -0000
Reply-to: Bug 554935 <554935@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

I do not agree that this is ATI only.
After upgrading an Intel mobo using on-board Intel graphics from 14.04 to 14.10, I got the same problem. It is not connected with any one font. dpkg-reconfigure fontconfig did not help; neither did removing /etc/fonts/fonts.conf.

What does fix it, but only 95%, is turning off hinting. I used the Unity
tweak tool. I can still find a stray example of bad characters here and
there.

I am running the classic, not Unity interface. Tested with apps:
FireFox, Chrome, Thunderbird, Gimp, Inkspace, Libreoffice all of which
had the problem.

The fonts look a lot better with hinting turned on!

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https://bugs.launchpad.net/bugs/554935

Title:
fontconfig corrupted fonts

Status in fontconfig package in Ubuntu:
New

Bug description:
Binary package hint: fontconfig

This was initially reported as a KDE bug, but it was later determined to be a fontconfig bug.
See -> https://bugs.kde.org/show_bug.cgi?id=233187 for origional bug report
Fontconfig version :2.8.0

The Antialiasing settings in System Settings-> Appearance -> Fonts
can cause font corruption, depending on the settings.

It occurs randomly, only for that particular character on that screen.
By character, I mean that for example, all "Y"s that are in the application are
corrupted.

This occurs if the antialiasing settings are set to "enbled" and with the
following combinations of settings

and does not occur with

SubPixel Rendering: Disabled | Hinting Style: None
SubPixel Rendering: Disabled | Hinting Style: Slight

Ive taken a screenshot, so please take a look ->
http://img52.imageshack.us/img52/7463/snapshot1x.png

This occurs only in Lucid

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