Working with Linux is much more convenient on a laptop adapted to this operating system. Still, many laptop models have hardware issues, like not working system suspension. Below you will find a list of manufacturers selling laptops optimized for Linux.

Some time ago on one of the groups about PHP, I asked people to fill out a survey about the hardware and software used. Below I present an analysis of several questions from that survey. All the data from the survey is available at the end of the text. 

The survey was completed by 57 people. The initial section includes a metric. 41% of people work in software development companies.