With the NVMe drive. Interested in a challenge, I installed Gentoo on the machine - configuring the kernel with intel_idle and enabling ACPI / tuning power management according to various sources of documentation doesn't get me past PC3.
Using Fedora 23 (installed from a respin as the original 4.2 kernel can't make it through the install process) powertop reports the Package entering PC8 though.
An earlier post of yours indicates multiple subsystems like SATA and I2C have to succeed in entering a power saving state before the entire Skylake package itself will also. My nearest guess so far is that's related?
EDIT: Actually your earlier post was related to haswell/broadwell. My mistake!
I assume you're also using Fedora 23 though, which makes it doubly mysterious.
XPS 15 9550
Using Fedora 23 (installed from a respin as the original 4.2 kernel can't make it through the install process) powertop reports the Package entering PC8 though.
An earlier post of yours indicates multiple subsystems like SATA and I2C have to succeed in entering a power saving state before the entire Skylake package itself will also. My nearest guess so far is that's related?
EDIT: Actually your earlier post was related to haswell/broadwell. My mistake!
I assume you're also using Fedora 23 though, which makes it doubly mysterious.