CURRENT from today throws lots of ACPI errors, lost HDMI detection

[Pete Wright]

howdy,
running code from today and having lots of issues.  when i boot the 
system (a kabylake laptop) using legacy mode in the BIOS i see lots of 
these errors are thrown in dmesg:

acpi0: <ALASKA A M I > on motherboard
Firmware Error (ACPI): Failure creating 
[\134_SB.PCI0.XHC.RHUB.HS01._UPC], AE_ALREADY_EXISTS (20180810/dswload2-468)
ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog 
(20180810/psobject-372)
ACPI Error: Skip parsing opcode OpcodeName unavailable (20180810/psloop-689)
Firmware Error (ACPI): Failure creating 
[\134_SB.PCI0.XHC.RHUB.HS01._PLD], AE_ALREADY_EXISTS (20180810/dswload2-468)
ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog 
(20180810/psobject-372)
ACPI Error: Skip parsing opcode OpcodeName unavailable (20180810/psloop-689)
Firmware Error (ACPI): Failure creating 
[\134_SB.PCI0.XHC.RHUB.HS02._UPC], AE_ALREADY_EXISTS (20180810/dswload2-468)
ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog 
(20180810/psobject-372)
ACPI Error: Skip parsing opcode OpcodeName unavailable (20180810/psloop-689)
Firmware Error (ACPI): Failure creating 
[\134_SB.PCI0.XHC.RHUB.HS02._PLD], AE_ALREADY_EXISTS (20180810/dswload2-468)
ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog 
(20180810/psobject-372)
ACPI Error: Skip parsing opcode OpcodeName unavailable (20180810/psloop-689)
Firmware Error (ACPI): Failure creating 
[\134_SB.PCI0.XHC.RHUB.HS03._UPC], AE_ALREADY_EXISTS (20180810/dswload2-468)
ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog 
(20180810/psobject-372)
ACPI Error: Skip parsing opcode OpcodeName unavailable (20180810/psloop-689)
<snip>

there are lots more, i can post a pastebin link if needed.

i also attempted to boot using UEFI but the system hangs very early in 
the boot process.  i have reverted to legacy mode for now so that i can 
work, but am keen to test out any patches or do any other debugging that 
is needed.

thx!
-pete


-- 
Pete Wright
pete at nomadlogic.org
@nomadlogicLA