find list of installed device drivers ubuntu
Solution 1:
Linux (and Ubuntu as well) doesn't have separate entity as "device drivers", Linux has kernel modules which could be called "drivers" for real or virtual hardware depending on their functionality.
Use lsmod or cat /proc/modules to see list of loaded kernel modules. Also you can see list of all available (installed) kernel modules in system using:
ls -R /lib/modules/`uname -r`/kernel/