I've been doing some thinking since writing about kernel developer Greg Kroah-Hartman's statement that Linux supports more devices than any other operating system. Readers made some good comments, and after some time spent wrestling with my (yes, supported) webcam, I can venture an additional suggestion as to why it doesn't always seem that way, beyond Kroah-Hartman's theory of a non-supported device becoming "personal."

In the case of my webcam, and in the case of one commenter, it seems the problem isn't necessarily the device driver. At lower levels, the drivers work. It's the layers of programming, interaction, and demand piled on the driver that makes the device feel broken. It is difficult to tell for sure, though, exactly what is causing that break.