Download picture of a official ubuntu documentation image . Suru Desktop Wallpaper. Ubuntu Background is available in 360x260, 1366x768, 1920x1080, 4096x2304 pixels resolutions. Choose Suru-Desktop-Wallpaper.jpg's appropriate size/resolution from following which best fit on your device.
To download above image, click on the download button, the wallpaper will open in browser's new window, then right click on the Ubuntu Background image and select 'save as' to save on your computer/laptop.