Interesting, I have Numix theme in Xubuntu 14.04 and it doesn't have this problem... must be something in Numix version in 16.04. I suggest filing a bug report about Numix then.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gtk2-engines-murrine in Ubuntu. https://bugs.launchpad.net/bugs/1294699 Title: Xubuntu desktop crashes in call to cairo after setting fixed-width bitmap (pcf) GTK font Status in gtk2-engines-murrine package in Ubuntu: Fix Released Status in gtk2-engines-murrine source package in Xenial: Fix Committed Status in gtk2-engines-murrine package in Debian: Fix Released Status in gtk2-engines-murrine package in Fedora: Unknown Bug description: 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) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gtk2-engines-murrine/+bug/1294699/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
