I have just installed Xubuntu. My box runs quite a lot slower than before with Windows 7. I am wondering if I am missing some device drivers. I can use
gnome-device-manager to list my devices.
In the device list view, I saw several blue question mark on the left side of devices. Based on my Windows experience, the question mark should indicate the device is not properly configured. Is it the same with
And most importantly, how could I know for sure whether or not the corresponding device drivers have been installed?