Comment # 5 on bug 1058964 from Segundo Luis Mart�n D�az Sotomayor

(In reply to Borislav Petkov from comment #4)
> Reportedly,
> 
> the BIOS is doing something stupid and the cache is complaining that
> writeback happens to MMIO addresses. The only thing you could do is
> report this to Dell. From looking at the model, though, it is a windoze
> laptop and they will probably tell you that they don't support Linux.
> Which is the dumb canned reply you get from OEMs. But it is worth a
> try...

This model is Ubuntu Certified.
https://certification.ubuntu.com/hardware/201611-25236/

Even the manual has instructions for Ubuntu.

Well... I will send a email to Dell, but, what should I write?