Not able to use unity 2D

Asked by Srinath G S on 2011-12-07

I get a blank desktop screen. I'm not able to use Unity 2D at all. When I type unity-2d-launcher --reset in the terminal, I get the following error. please help.

(unity-2d-launcher:6622): GdkPixbuf-WARNING **: Bug! gdk-pixbuf loader 'png' didn't set an error on failure.

(unity-2d-launcher:6622): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:1230:46: Failed to load image '/usr/share/themes/Ambiance/gtk-3.0/assets/slider.png': reason not known, probably a corrupt image file

(unity-2d-launcher:6622): GdkPixbuf-WARNING **: Bug! gdk-pixbuf loader 'png' didn't set an error on failure.

(unity-2d-launcher:6622): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:1234:55: Failed to load image '/usr/share/themes/Ambiance/gtk-3.0/assets/slider_prelight.png': reason not known, probably a corrupt image file

(unity-2d-launcher:6622): GdkPixbuf-WARNING **: Bug! gdk-pixbuf loader 'png' didn't set an error on failure.

(unity-2d-launcher:6622): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:1238:55: Failed to load image '/usr/share/themes/Ambiance/gtk-3.0/assets/slider_vertical.png': reason not known, probably a corrupt image file

(unity-2d-launcher:6622): GdkPixbuf-WARNING **: Bug! gdk-pixbuf loader 'png' didn't set an error on failure.

(unity-2d-launcher:6622): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:1242:64: Failed to load image '/usr/share/themes/Ambiance/gtk-3.0/assets/slider_prelight_vertical.png': reason not known, probably a corrupt image file

(unity-2d-launcher:6622): GdkPixbuf-WARNING **: Bug! gdk-pixbuf loader 'png' didn't set an error on failure.

(unity-2d-launcher:6622): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:1298:73: Failed to load image '/usr/share/themes/Ambiance/gtk-3.0/assets/scrollbar_handle_vertical.png': reason not known, probably a corrupt image file

(unity-2d-launcher:6622): GdkPixbuf-WARNING **: Bug! gdk-pixbuf loader 'png' didn't set an error on failure.

(unity-2d-launcher:6622): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:1315:64: Failed to load image '/usr/share/themes/Ambiance/gtk-3.0/assets/scrollbar_handle.png': reason not known, probably a corrupt image file
unity-2d-launcher: symbol lookup error: /usr/lib/libdconf-qt.so.0: undefined symbol: _ZNK15QDBusConnection15internalPointerEv

Question information

Language:
English Edit question
Status:
Solved
For:
unity-2d Edit question
Assignee:
No assignee Edit question
Solved by:
Florian Boucault
Solved:
2011-12-08
Last query:
2011-12-08
Last reply:
2011-12-07
Srinath G S (g-s-srinath89) said : #1

Further information.

I'm using Ubuntu 11.10

Srinath G S (g-s-srinath89) said : #2

I'm able to use Unity 3D without any glitches

Gerry Boland (gerboland) said : #3

Hey,
you appear to have some corrupted files. You may be able to fix them with these steps in a Terminal (you can always open a terminal with Ctrl+Alt+T)

1. Update and upgrade the packages installed on your machine:
         sudo apt-get update && sudo apt-get upgrade
    It will ask you for your admin password, please supply.

2. After that, try re-installing the possibly-corrupt packages:
         sudo apt-get install --reinstall light-themes libdconf-qt0 unity-2d-launcher

3. Now restart your computer
         sudo shutdown -r now

Hopefully this will fix the issue.

Note to restart the Launcher, make sure you kill it first with "killall unity-2d-launcher" and then run it with "unity-2d-launcher&"

Best Florian Boucault (fboucault) said : #4

Le 07/12/2011 16:20, Srinath G S a écrit :
> New question #181185 on unity-2d:
> https://answers.launchpad.net/unity-2d/+question/181185
>
> I get a blank desktop screen. I'm not able to use Unity 2D at all. When I type unity-2d-launcher --reset in the terminal, I get the following error. please help.
>
> (unity-2d-launcher:6622): GdkPixbuf-WARNING **: Bug! gdk-pixbuf loader 'png' didn't set an error on failure.
>
> (unity-2d-launcher:6622): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:1230:46: Failed to load image '/usr/share/themes/Ambiance/gtk-3.0/assets/slider.png': reason not known, probably a corrupt image file
>
> (unity-2d-launcher:6622): GdkPixbuf-WARNING **: Bug! gdk-pixbuf loader 'png' didn't set an error on failure.
>
> (unity-2d-launcher:6622): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:1234:55: Failed to load image '/usr/share/themes/Ambiance/gtk-3.0/assets/slider_prelight.png': reason not known, probably a corrupt image file
>
> (unity-2d-launcher:6622): GdkPixbuf-WARNING **: Bug! gdk-pixbuf loader 'png' didn't set an error on failure.
>
> (unity-2d-launcher:6622): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:1238:55: Failed to load image '/usr/share/themes/Ambiance/gtk-3.0/assets/slider_vertical.png': reason not known, probably a corrupt image file
>
> (unity-2d-launcher:6622): GdkPixbuf-WARNING **: Bug! gdk-pixbuf loader 'png' didn't set an error on failure.
>
> (unity-2d-launcher:6622): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:1242:64: Failed to load image '/usr/share/themes/Ambiance/gtk-3.0/assets/slider_prelight_vertical.png': reason not known, probably a corrupt image file
>
> (unity-2d-launcher:6622): GdkPixbuf-WARNING **: Bug! gdk-pixbuf loader 'png' didn't set an error on failure.
>
> (unity-2d-launcher:6622): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:1298:73: Failed to load image '/usr/share/themes/Ambiance/gtk-3.0/assets/scrollbar_handle_vertical.png': reason not known, probably a corrupt image file
>
> (unity-2d-launcher:6622): GdkPixbuf-WARNING **: Bug! gdk-pixbuf loader 'png' didn't set an error on failure.
>
> (unity-2d-launcher:6622): Gtk-WARNING **: Theme parsing error: gtk-widgets.css:1315:64: Failed to load image '/usr/share/themes/Ambiance/gtk-3.0/assets/scrollbar_handle.png': reason not known, probably a corrupt image file
> unity-2d-launcher: symbol lookup error: /usr/lib/libdconf-qt.so.0: undefined symbol: _ZNK15QDBusConnection15internalPointerEv
>

I guess you are not using Ubuntu's version of Qt which carries a patch
necessary for dconf-qt to function.

Florian

Srinath G S (g-s-srinath89) said : #5

@Gerry Boland: same error persists. it stops at the same point

@Florian: what is the solution for that.?

Srinath G S (g-s-srinath89) said : #6

I'm still waiting for an answer.. please help

Srinath G S (g-s-srinath89) said : #7

Thanks Florian Boucault, that solved my question.

Srinath G S (g-s-srinath89) said : #8

I had installed qt creator a while before. It configured Qt core to its own local copy and lead to all these problems as Florian pointed that out. Thanks a lot for your help. Now Unity-2D runs flawlessly.