I would try to install/reinstall the "plymouth-theme-trisquel-logo" package.
- [Trisquel-users] Plymouth Themes : Trisquel-Logo missing thierry-renaux
- [Trisquel-users] Re : Plymouth Themes : Trisquel-Logo ... lcerf
- [Trisquel-users] Re : Plymouth Themes : Trisquel-Logo ... thierry-renaux
- Re: [Trisquel-users] Plymouth Themes : Trisquel-Logo m... thierry-renaux
