A bought a Dell with Ubuntu once. I recall calling tech support asking how does one update the firmware. If memory serves, support wasn't sure how to deal with it not being Windows. Since then, I'd just bought Dell laptops with Windows and either dual boot Ubuntu or replace Windows entirely. The Ubuntu Dell was lousy spec wise. It's easy to update firmware with a FreeDOS boot disk.
For my next laptop, might get a System76.
Slightly OT, but had money to burn for a work desktop and went with a Supermicro workstation. Very nice hardware. More expensive but much better than Dell/HP/Lenovo workstations. Ironically, still cheaper than a Mac Pro desktop. Also better -- Mac Pro RAID was a poorly thought through overpriced garbage, last time I worked with it up a couple of years ago.
For my next laptop, might get a System76.
Slightly OT, but had money to burn for a work desktop and went with a Supermicro workstation. Very nice hardware. More expensive but much better than Dell/HP/Lenovo workstations. Ironically, still cheaper than a Mac Pro desktop. Also better -- Mac Pro RAID was a poorly thought through overpriced garbage, last time I worked with it up a couple of years ago.