Unity doesn't start after system upgrade

[ghost]

I've done a full system upgrade and now seeing black screen after logging in :(

Seems compiz trying to invoke getCompPluginVTable20090315_unity in /usr/lib/libunity.so:

$ DISPLAY=:0 compiz --debug --replace unity
compiz (core) - Info: Loading plugin: core
compiz (core) - Debug: Trying to load core from: /home/smamontov/.compiz-1/plugins/libcore.so
compiz (core) - Debug: dlopen failed: /home/smamontov/.compiz-1/plugins/libcore.so: cannot open  shared object file: No such file or directory 
compiz (core) - Debug: Trying to load core from: /usr/lib/compiz/libcore.so
compiz (core) - Debug: dlopen failed: /usr/lib/compiz/libcore.so: cannot open shared object file: No such file or directory
compiz (core) - Debug: Trying to load core from: /usr/lib/compiz/libcore.so
compiz (core) - Debug: dlopen failed: /usr/lib/compiz/libcore.so: cannot open shared object file: No such file or directory
compiz (core) - Info: Starting plugin: core
compiz (core) - Debug: Started plugin: core
compiz (core) - Info: Loading plugin: unity
compiz (core) - Debug: Trying to load unity from: /home/smamontov/.compiz-1/plugins/libunity.so
compiz (core) - Debug: dlopen failed: /home/smamontov/.compiz-1/plugins/libunity.so: cannot open shared object file: No such file or directory
compiz (core) - Debug: Trying to load unity from: /usr/lib/compiz/libunity.so
compiz (core) - Debug: dlopen failed: /usr/lib/compiz/libunity.so: cannot open shared object file: No such file or directory
compiz (core) - Debug: Trying to load unity from: /usr/lib/compiz/libunity.so
compiz (core) - Debug: dlopen failed: /usr/lib/compiz/libunity.so: cannot open shared object file: No such file or directory
compiz (core) - Debug: Trying to load unity from: libunity.so
compiz (core) - Debug: Opened library: libunity.so
compiz (core) - Error: dlsym: /usr/lib/libunity.so: undefined symbol: getCompPluginVTable20090315_unity
compiz (core) - Error: Failed to load plugin: unity
compiz (core) - Info: Stopping plugin: core
compiz (core) - Debug: Stopped plugin: core
compiz (core) - Info: Unloading plugin: core

[ghost]

Hmm, I've rolled back all changes but still seeing undefined symbol: getCompPluginVTable20090315_unity. Any ideas why this can happen?

[horsemanoffaith]

There's probably a library file that is needed by compiz-ubuntu and possibly some other packages that's causing the problem. I just did a complete rebuild tonight and everything's working correctly.

[ghost]

@horsemanoffaith thanks, I've had to also do a full reinstall of all of my packages because of this... I just was wondering how this could happen. I think we can close this issue.

[horsemanoffaith]

If you update your system and a needed library file changes, you have to manually rebuild the packages that require that library. It happened to me recently, but I can't remember the name of the file that did it. I had to rebuild compiz, and even after that it didn't work right. I decided to do a full rebuild because of one of the other issues I posted about.

[ghost]

Thanks, makes sense! ;)