Fedora 28 (KDE) on T550

[edik]

T550
i5-5300u
16GB RAM
256GB SSD
IPS 3K Touch Panel
72Wh battery
(Non-backlit keyboard)

Everything works out of the box, including suspend, hibernation and the function key controls (can't test camera/mic as they can't be seen by Linux/Windows, some hardware issue)

Suspend lost about 4% battery in 12 hours, so very good I think.

With KDE desktop I can with powertop and tlp reduce to around 6.5W/hour (was 4.5W/hour on my T450 8GB/256GB TN FHD).

Incidentally a very light buzzing noise with Windows drove me crazy, this was eliminated in Linux.