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[Launchpad Bug Tracker <1294699@xxxxxxxxxxxxxxxxxx>]

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Reproduce: In Xubuntu (xfce), go to Settings Manager -> Appearance ->
Fonts -> Default Font, select an installed fixed-width, bitmapped .pcf
font (e.g. ProFont).  Desktop crashes; the new font does appear in the
apport dialogs, but attempting to log back into the session, xfdesktop
crashes with an assert in cairo, with gtk up the stacktrace:

cairo-scaled-font.c:459: _cairo_scaled_glyph_page_destroy: Assertion
`!scaled_font->cache_frozen' failed.

To undo the change and be able to log in, I had to remove the GTK Font
property in xfce4's xsettings.xml config file.  It would be a fair
limitation if certain bitmap fonts failed over gracefully or were
disallowed for selection, however, allowing an the interface to select
the font without error, and then crashing and hanging the session on
every login, leaving the config in a bad state should be fixed.

uname:
3.11.0-18-generic #32-Ubuntu SMP Tue Feb 18 21:11:14 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

lsb_release:
Distributor ID:	Ubuntu
Description:	Ubuntu 13.10
Release:	13.10
Codename:	saucy

Similar report seen in archlinux/xfce4:
https://bbs.archlinux.org/viewtopic.php?id=169433

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: libgtk2.0-0 2.24.20-1ubuntu1
ProcVersionSignature: Ubuntu 3.11.0-18.32-generic 3.11.10.4
Uname: Linux 3.11.0-18-generic x86_64
ApportVersion: 2.12.5-0ubuntu2.2
Architecture: amd64
Date: Wed Mar 19 10:41:54 2014
InstallationDate: Installed on 2013-11-01 (138 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
MarkForUpload: True
SourcePackage: gtk+2.0
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: xfdesktop
     Importance: Undecided
         Status: New

** Affects: gtk2-engines-murrine (Ubuntu)
     Importance: Undecided
         Status: Confirmed

** Affects: terminator (Ubuntu)
     Importance: Undecided
         Status: Confirmed

** Affects: ubuntu-translations
     Importance: Undecided
         Status: New

** Affects: gtk2-engines-murrine (Debian)
     Importance: Unknown
         Status: Fix Released

** Affects: gtk2-engines-murrine (Fedora)
     Importance: Unknown
         Status: Unknown


** Tags: amd64 apport-bug patch trusty wily xenial yakkety
-- 
Xubuntu desktop crashes in call to cairo after setting fixed-width bitmap (pcf) GTK font
https://bugs.launchpad.net/bugs/1294699
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