In my personal experience (I have a thinkpad x120e with a E-350) it used to be the case that I needed the proprietary drivers to get anything respectable. Howe

In my personal experience (I have a thinkpad x120e with a E-350) it used to be the case that I needed the proprietary drivers to get anything respectable. However, things have changed recently (in the last year or so) and I've been getting good performance out of the opensource drivers.