boot - ACPI Warning Argument #4 type mismatch - Ask Ubuntu


output of dmesg: http://paste.ubuntu.com/23381803/ in dmesg, there below error:

acpi warning: \_sb_.pci0.rp01.pxsx._dsm: argument #4 type mismatch - found [buffer], acpi requires [package] (20150930/nsarguments-95)

which seems bios or related error.

how fix this? there case related bug? https://bugs.launchpad.net/ubuntu/+source/linux/+bug/15884 (i had filed bug , using new os on same machine.

other details:

 ~  lsb_release -a no lsb modules available. distributor id: neon description:    kde neon user edition 5.8 release:        16.04 codename:       xenial  ~  uname -a linux neon 4.4.0-45-generic #66-ubuntu smp wed oct 19 14:12:37 utc 2016 x86_64 x86_64 x86_64 gnu/linux

the acpi warning: ...._dsm: argument #4 type mismatch - found [buffer], acpi requires [package] warning annoying harmless. message shown because nvidia not conform official acpi specification.

it can not "fixed" using required "package" type because break many laptops nvidia gpus, resulting in higher power consumption. more technical description, see this discussion.

as user, best thing can ignoring it. occur when gpu driver (nvidia, nouveau, bbswitch) loaded, or when gpu in hybrid graphics laptop powered off.


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