Gtk-WARNING **: Theme parsing error: gtk.css:40:48: Junk at end of value

[Thomas Petazzoni]

Under Xubuntu 14.10, whenever a Gtk application is started, at least with the Orion Gtk theme, the following messages appear in the terminal:

(apport-gtk:18024): Gtk-WARNING **: Theme parsing error: gtk.css:27:35: Junk at end of value
(apport-gtk:18024): Gtk-WARNING **: Theme parsing error: gtk.css:40:48: Junk at end of value
(apport-gtk:18024): Gtk-WARNING **: Theme parsing error: gtk.css:48:46: Junk at end of value
(apport-gtk:18024): Gtk-WARNING **: Theme parsing error: gtk.css:59:58: Junk at end of value
(apport-gtk:18024): Gtk-WARNING **: Theme parsing error: gtk.css:70:46: Junk at end of value
(apport-gtk:18024): Gtk-WARNING **: Theme parsing error: gtk.css:81:58: Junk at end of value

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: orion-gtk-theme 1.8.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.16.0-25.33-generic 3.16.7
Uname: Linux 3.16.0-25-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.14.7-0ubuntu8
Architecture: amd64
CurrentDesktop: XFCE
Date: Fri Nov 14 11:37:51 2014
InstallationDate: Installed on 2013-06-02 (529 days ago)
InstallationMedia: Xubuntu 13.04 "Raring Ringtail" - Release amd64 (20130423.1)
PackageArchitecture: all
SourcePackage: shimmer-themes
UpgradeStatus: Upgraded to utopic on 2014-11-13 (0 days ago)

[Alistair Buxton (a-j-buxton)]

I can't reproduce this. Are you sure you don't have an old version of Orion installed in your home directory? Check ~/.themes and ~/.local/share/themes/

[Aielyn (g-o)]

I had the same issue, with a different theme. But I noticed that the locations in gtk.css were identical, so I searched for all instances of gtk.css on my computer.

~/.config/gtk-3.0/gtk.css

had some errors in it for me, and I assume yours will be the same. Six times in the file, it will have a line that starts with "background-color", and then follow it up later in the line with "background-image"... but prior to "background-image", it should have had a semicolon (at the end of the prior text, before the tab), yet the semicolon was missing. Adding the missing semicolons has corrected the error.

[Simon Steinbeiß (ochosi)]

As Orion is currently unmaintained and needs serious updates for Gtk3 I'm closing this issue for now.

@Aielyn: Feel free to report a bug against the theme where you have that problem.

[Aielyn (g-o)]

Just to add more information about the true source of this error...

It's due to gtk-theme-config - on using it, it overwrites ~/.config/gtk-3.0/gtk.css, and this is where the errors are coming from. I have confirmed that using gtk-theme-config after editing gtk.css to add the semicolons will cause them to disappear again.

I have filed a bug report against gtk-theme-config, here: https://bugs.launchpad.net/ubuntu/+source/gtk-theme-config/+bug/1500210 - but in the meantime, as a workaround, manually editing in the semicolons will fix the errors.

@Simon: Please note that this is not a bug with any particular theme.