errors and warnings in dmesg (_SB_.PCI0.PEG0.GFX0._DSM) (_SB_.PCI0.GFX0._DSM) (\GPIO)

Hello, I've had recently made a fresh Xubuntu 15.10 install. Today I've checked dmesg just after reboot for any errors/warnings... and they are there!

What shall I do about them? I consider an operating system healthy when there are no errors/warnings in dmesg after rebooting, but Ie got them :(

Here it is:
<blockquote>
$ dmesg | grep -iE "err|warn" | grep -ivE "interr|overr|erra"
[ 1.775675] ACPI Error: Method parse/execution failed [\_SB_.PCI0.GFX0._DSM] (Node ffff88014a4bb4b0), AE_AML_PACKAGE_LIMIT (20150619/psparse-536)
[ 1.775687] ACPI Warning: \_SB_.PCI0.GFX0._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20150619/nsarguments-95)
[ 1.775742] ACPI Warning: \_SB_.PCI0.GFX0._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20150619/nsarguments-95)
[ 1.775825] ACPI Error: Method parse/execution failed [\_SB_.PCI0.GFX0._DSM] (Node ffff88014a4bb4b0), AE_AML_PACKAGE_LIMIT (20150619/psparse-536)
[ 1.775830] ACPI Error: Method parse/execution failed [\_SB_.PCI0.PEG0.GFX0._DSM] (Node ffff88014a4d09b0), AE_AML_PACKAGE_LIMIT (20150619/psparse-536)
[ 1.775838] ACPI Warning: \_SB_.PCI0.PEG0.GFX0._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20150619/nsarguments-95)
[ 1.775929] ACPI Warning: \_SB_.PCI0.PEG0.GFX0._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20150619/nsarguments-95)
[ 2.427221] usb 3-1.1: device descriptor read/64, error -32
[ 7.904456] ACPI Warning: \_SB_.PCI0.PEG0.GFX0._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20150619/nsarguments-95)
[ 7.904545] ACPI Warning: \_SB_.PCI0.PEG0.GFX0._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20150619/nsarguments-95)
[ 8.479140] EXT4-fs (sda3): re-mounted. Opts: errors=remount-ro,commit=60
[ 8.570269] ACPI Warning: SystemIO range 0x0000000000000428-0x000000000000042F conflicts with OpRegion 0x0000000000000400-0x000000000000044F (\GPIS) (20150619/utaddress-254)
[ 8.570279] ACPI Warning: SystemIO range 0x0000000000000428-0x000000000000042F conflicts with OpRegion 0x0000000000000400-0x000000000000047F (\PMIO) (20150619/utaddress-254)
[ 8.570289] ACPI Warning: SystemIO range 0x0000000000000540-0x000000000000054F conflicts with OpRegion 0x0000000000000500-0x000000000000057F (\GPIO) (20150619/utaddress-254)
[ 8.570294] ACPI Warning: SystemIO range 0x0000000000000540-0x000000000000054F conflicts with OpRegion 0x0000000000000500-0x0000000000000563 (\GP01) (20150619/utaddress-254)
[ 8.570301] ACPI Warning: SystemIO range 0x0000000000000530-0x000000000000053F conflicts with OpRegion 0x0000000000000500-0x000000000000057F (\GPIO) (20150619/utaddress-254)
[ 8.570305] ACPI Warning: SystemIO range 0x0000000000000530-0x000000000000053F conflicts with OpRegion 0x0000000000000500-0x0000000000000563 (\GP01) (20150619/utaddress-254)
[ 8.570312] ACPI Warning: SystemIO range 0x0000000000000500-0x000000000000052F conflicts with OpRegion 0x0000000000000500-0x000000000000057F (\GPIO) (20150619/utaddress-254)
[ 8.570316] ACPI Warning: SystemIO range 0x0000000000000500-0x000000000000052F conflicts with OpRegion 0x0000000000000500-0x0000000000000563 (\GP01) (20150619/utaddress-254)
[ 16.935710] ACPI Warning: \_SB_.PCI0.PEG0.GFX0._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20150619/nsarguments-95)
[ 16.935853] ACPI Warning: \_SB_.PCI0.PEG0.GFX0._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20150619/nsarguments-95)
[ 23.910083] ACPI Warning: \_SB_.PCI0.PEG0.GFX0._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20150619/nsarguments-95)
[ 23.910347] ACPI Warning: \_SB_.PCI0.PEG0.GFX0._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20150619/nsarguments-95)
</blockquote>

Thank you!