Ubuntu 10.04 login screen

1920 × 1200

Ubuntu login screen

1680 × 1050

Ubuntu desktop background

1280 × 800

Ubuntu Logo on Dark Background — Black, Dramatic

1600 × 1000

Ubuntu Linux Logo — Purple

1440 × 900

Ubuntu Linux logo on dark background

1024 × 768

Ubuntu Linux desktop background

960 × 720

Windows 7 Login Screen — Blue, Minimalist

2560 × 1440

Windows 7 Logo — Black, Minimalist, Digital Art, Text, White, Windows Seven

1920 × 1200

Ubuntu Logo on Textured Background — Gray, Neutral

1920 × 1200

Windows 7 desktop background

1024 × 819

Tux penguin with Ubuntu logo

1024 × 768