Laptop - Skylake and kernel-4.4
 

https://bugzilla.kernel.org/show_bug.cgi?id=109081

People with a recent MSI laptop with a i7 6700HQ CPU will most likely hit the problem above.
This is both for the installer and for the running system if you use the new slackware 4.4 kernel.

The suggested Solution is to add the following to the boot command line: intel_idle.max_cstate=7
The solution suggested makes your system boot, but I recommend to downgrade your kernel.
as you get alot of kernel error messages

The following kernels work for me (updating this as I am still testing)

v4.4.0 - Not working, see above for workaround (expect kernel errors/panic)
v4.3.4 - Not working, see above for workaround (expect kernel errors/panic)
v4.1.16 - Works for 99, Note: it does give some ACPI errors, occasionally system hangs and reboot does not work.
v3.18.26 - Works <-- recommended by me to use, untill a fix has been inserted in the 4.x kernel tree
v3.14.60 - Works
v3.12.53 - Works
v3.10.96 - Works

v4.5-xxxx (beta) - Not tested

If people have extra workarounds, patches or solutions please feel free to post here.

It seems kernel 4.4.1 solves most issues, and using intel_idle.max_cstate=7 works stable for 2 days now

Good to know given that many new laptops are shipping skylake now. Thanks for posting.

just to confirm.

Slackware 14.2 beta 2 can be installed if you add the line "intel_idle.max_cstate=7" to the grub command line.

Thanks for updating to kernel 4.4.1 PV