Can you put Linux on an Android tablet?

Access the Linux kernel on your Android smartphone or tablet

Android devices are powered by a modified Linux kernel. While the kernel is restrictive, it is possible to run Linux on Android phones and tablets.

Is there a Ubuntu for tablets?

Refreshing and easy to work with. In its current state, our OS is designed primarily for touchscreen mobile devices such as smartphones and tablet computers. Ubuntu Touch offers a completely refreshing approach to the mobile experience.