On 20/09/17 15:51, David King wrote:
On 20/09/17 13:36, David King wrote:
I have a problem with my Ubuntu Studio 16.04 installation today. It was
working okay before, but today, when I logged in, most of the icons were
missing, including inside things like Thunderbird.
I rebooted and then even the icons on the login screen were all gone,
and when I log in, all icons are missing along with the wallpaper.
I can boot into a different Linux on the same PC and it is all okay with
that.
I have tried restoring some files (cache files, session files) from a
known good backup, but it makes no difference. I also tried booting with
a different kernel and it made no difference.
I wonder if it is a problem with the OS there are even no icons at the
login screen.
I did not do any major updates lately, although there were quite a lot
of updates pending, which I was going to install today, but have not
done so because of this problem.
I have tried searching on Google and could not find any solution.
Does anyone else have this problem? Or know what needs to be fixed? It
seems like programs can run okay, but without the icons, nothing is
really much usable.
David King
I looked around at various files, and found a log file at
/var/log/lightdm/seat0-greeter.log
This shows some errors in loading icons and wallpaper, re not
recognising image file formats, which is unusual:
** Message: Starting lightdm-gtk-greeter 2.0.1 (Apr 11 2016, 06:05:31)
** Message: [Configuration] Reading file:
/usr/share/lightdm/lightdm-gtk-greeter.conf.d/01_ubuntu.conf
** Message: [Configuration] Reading file:
/usr/share/lightdm/lightdm-gtk-greeter.conf.d/30_ubuntustudio.conf
** Message: [Configuration] Reading file:
/etc/lightdm/lightdm-gtk-greeter.conf
** (process:7751): WARNING **: Failed to register client:
GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name
org.gnome.SessionManager was not provided by any .service files
Activating service name='org.a11y.atspi.Registry'
Successfully activated service 'org.a11y.atspi.Registry'
(lightdm-gtk-greeter:7749): GdkPixbuf-WARNING **: Cannot open pixbuf
loader module file
'/usr/lib/x86_64-linux-gnu/gdk-pixbuf-2.0/2.10.0/loaders.cache': No such
file or directory
This likely means that your installation is broken.
Try running the command
gdk-pixbuf-query-loaders >
/usr/lib/x86_64-linux-gnu/gdk-pixbuf-2.0/2.10.0/loaders.cache
to make things work again for the time being.
I noticed the above lines, and decided to restore a loaders.cache file
from a backup, and it worked. Now I can boot into Ubuntu Studio with all
icons and wallpaper restored.
But I still have no idea why that loaders.cache file disappeared.
David
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