I have a Dell XPS 15z which came with Windows 7. I installed Kubuntu on it dual-boot. The only time I boot into Windows is to do my tax (Aus Tax Office tool was Windows only for a long time - that might have changed now though).
Not quite everything works on the 15z. The external HDMI out will not work unless you restart (no hot plug for an external monitor). The Nvidia/Intel hybrid graphics system was also poorly supported until recently.
Otherwise everything seems to work fine. I rarely need to reboot (usually only after a kernel upgrade).
It might be a good idea to check out the Ubuntu Hardware Support Wiki before you buy, for example:
Not quite everything works on the 15z. The external HDMI out will not work unless you restart (no hot plug for an external monitor). The Nvidia/Intel hybrid graphics system was also poorly supported until recently.
Otherwise everything seems to work fine. I rarely need to reboot (usually only after a kernel upgrade).
It might be a good idea to check out the Ubuntu Hardware Support Wiki before you buy, for example:
https://wiki.ubuntu.com/HardwareSupport/Machines/Laptops/Del...