Linux.com published a review on the System 76 Darter laptop

While users are pleading with Dell to sell systems with Linux pre-installed, smaller vendors have been offering Linux on OEM hardware for some time. One of the more recent arrivals in the OEM Linux market is System 76, which sells a decent selection of desktop, workstation, and notebook systems with Ubuntu Linux pre-installed. I test-drove the company's Ubuntu-certified Darter laptop recently, and found that it has a few flaws, but overall provides a decent system for Linux users clamoring for a Linux-friendly vendor.

System 76 Darter laptop Review