Which Laptop is compatible with Ubuntu?

The compatibility of laptop with Ubuntu (or any other distribution) depends on the support available in kernel for hardware components. Usually the troublesome components are: You can find information about compatibility of various laptops on Ubuntu wiki
 * Internal modem
 * Wireless network card
 * SD card reader

The purpose of this page is to list the laptops available in India that are generally usable with Ubuntu.

NOTE: General usability only covers working of existing components. It doesn't cover features like dual monitors, port replication etc.