I pasted an english version of the error I got without noticing is a bit different from mine in italian...
$ sudo update-alternatives --config default.plymouth È presente una sola alternativa nel gruppo default.plymouth: /lib/plymouth/themes/ubuntu-logo/ubuntu-logo.plymouth Nulla da configurare. update-alternatives: attenzione: viene forzata l'installazione dell'alternativa /lib/plymouth/themes/ubuntu-logo/ubuntu-logo.plymouth poiché il gruppo default.plymouth è danneggiato. update-alternatives: attenzione: /lib/plymouth/themes/default.grub non viene sostituito con un collegamento. so, it is default.grub and not default.plymouth :) $ ls -l /lib/plymouth/themes totale 16 -rw-r--r-- 1 root root 43 2011-05-23 11:02 default.grub lrwxrwxrwx 1 root root 34 2011-05-25 16:38 default.plymouth -> /etc/alternatives/default.plymouth drwxr-xr-x 2 root root 4096 2011-05-25 14:06 details lrwxrwxrwx 1 root root 31 2011-05-25 15:46 text.plymouth -> /etc/alternatives/text.plymouth drwxr-xr-x 2 root root 4096 2011-05-25 15:46 ubuntu-logo drwxr-xr-x 2 root root 4096 2011-05-25 15:46 ubuntu-text $ cat /lib/plymouth/themes/default.plymouth [Plymouth Theme] Name=Ubuntu Logo Description=A theme that features a blank background with a logo. ModuleName=script [script] ImageDir=/lib/plymouth/themes/ubuntu-logo ScriptFile=/lib/plymouth/themes/ubuntu-logo/ubuntu-logo.script $ cat /lib/plymouth/themes/default.grub if background_color 44,0,30; then clear fi hope now is more clear! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/788138 Title: group default.plymouth is broken -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs