Comment 29 for bug 1690502

(In reply to Radek Podgorny from comment #5)
> also, i forgot to mention i use this kernel cmdline:
>
> Command line: initrd=\intel-ucode.img initrd=\initramfs-linux.img
> root=/dev/disk/by-label/PUPIK_ROOT rw ___acpi_osi=

It looks your ssdt6 contains same information as dsdt.

 193531\dsdt.dsl (18 hits)
 Line 41101: Method (_UPC, 0, Serialized) // _UPC: USB Port Capabilities
 Line 41133: Method (_UPC, 0, Serialized) // _UPC: USB Port Capabilities
 Line 41165: Method (_UPC, 0, Serialized) // _UPC: USB Port Capabilities
 Line 41197: Method (_UPC, 0, Serialized) // _UPC: USB Port Capabilities
 Line 41229: Method (_UPC, 0, Serialized) // _UPC: USB Port Capabilities
 Line 41261: Method (_UPC, 0, Serialized) // _UPC: USB Port Capabilities
 Line 41293: Method (_UPC, 0, Serialized) // _UPC: USB Port Capabilities
 Line 41325: Method (_UPC, 0, Serialized) // _UPC: USB Port Capabilities
 Line 41357: Method (_UPC, 0, Serialized) // _UPC: USB Port Capabilities
 Line 41389: Method (_UPC, 0, Serialized) // _UPC: USB Port Capabilities
 Line 41421: Method (_UPC, 0, Serialized) // _UPC: USB Port Capabilities
 Line 41453: Method (_UPC, 0, Serialized) // _UPC: USB Port Capabilities
 Line 41485: Method (_UPC, 0, Serialized) // _UPC: USB Port Capabilities
 Line 41517: Method (_UPC, 0, Serialized) // _UPC: USB Port Capabilities
 Line 41549: Method (_UPC, 0, Serialized) // _UPC: USB Port Capabilities
 Line 41581: Method (_UPC, 0, Serialized) // _UPC: USB Port Capabilities
 Line 41613: Method (_UPC, 0, Serialized) // _UPC: USB Port Capabilities
 Line 41645: Method (_UPC, 0, Serialized) // _UPC: USB Port Capabilities
  193531\ssdt6.dsl (20 hits)
 Line 81: Method (_UPC, 0, NotSerialized) // _UPC: USB Port Capabilities
 Line 94: Method (_UPC, 0, NotSerialized) // _UPC: USB Port Capabilities
 Line 107: Method (_UPC, 0, NotSerialized) // _UPC: USB Port Capabilities
 Line 120: Method (_UPC, 0, NotSerialized) // _UPC: USB Port Capabilities
 Line 133: Method (_UPC, 0, NotSerialized) // _UPC: USB Port Capabilities
 Line 146: Method (_UPC, 0, NotSerialized) // _UPC: USB Port Capabilities
 Line 159: Method (_UPC, 0, NotSerialized) // _UPC: USB Port Capabilities
 Line 172: Method (_UPC, 0, NotSerialized) // _UPC: USB Port Capabilities
 Line 185: Method (_UPC, 0, NotSerialized) // _UPC: USB Port Capabilities
 Line 198: Method (_UPC, 0, NotSerialized) // _UPC: USB Port Capabilities
 Line 211: Method (_UPC, 0, NotSerialized) // _UPC: USB Port Capabilities
 Line 224: Method (_UPC, 0, NotSerialized) // _UPC: USB Port Capabilities
 Line 237: Method (_UPC, 0, NotSerialized) // _UPC: USB Port Capabilities
 Line 250: Method (_UPC, 0, NotSerialized) // _UPC: USB Port Capabilities
 Line 263: Method (_UPC, 0, NotSerialized) // _UPC: USB Port Capabilities
 Line 276: Method (_UPC, 0, NotSerialized) // _UPC: USB Port Capabilities
 Line 289: Method (_UPC, 0, NotSerialized) // _UPC: USB Port Capabilities
 Line 302: Method (_UPC, 0, NotSerialized) // _UPC: USB Port Capabilities
 Line 409: Method (_UPC, 0, Serialized) // _UPC: USB Port Capabilities
 Line 432: Method (_UPC, 0, Serialized) // _UPC: USB Port Capabilities

So the error was reported when SSDT6 was loaded.

Looks like a firmware issue to me if you didn't customize your DSDT by combining original one with SSDTs.

Thanks
Lv