dmesg on Ubuntu 16.04.2 + Cable Matters USB-C to HDMI adapter + Samsung external monitor

gistfile1.txt

[ 1297.667589] ACPI Error: [SPRT] Namespace lookup failure, AE_ALREADY_EXISTS (20160422/dswload2-330)
[ 1297.667605] ACPI Exception: AE_ALREADY_EXISTS, During name lookup/catalog (20160422/psobject-227)
[ 1297.667611] ACPI Error: Method parse/execution failed [\_GPE._E42] (Node ffff9a41ae0daf78), AE_ALREADY_EXISTS (20160422/psparse-542)
[ 1297.667627] ACPI Error: Method parse/execution failed [\_GPE._E42] (Node ffff9a41ae0daf78), AE_ALREADY_EXISTS (20160422/psparse-542)
[ 1297.667645] ACPI Exception: AE_ALREADY_EXISTS, while evaluating GPE method [_E42] (20160422/evgpe-592)
[ 1297.717012] pci 0000:01:00.0: [8086:1576] type 01 class 0x060400
[ 1297.717132] pci 0000:01:00.0: supports D1 D2
[ 1297.717133] pci 0000:01:00.0: PME# supported from D0 D1 D2 D3hot D3cold
[ 1297.717233] pci 0000:01:00.0: System wakeup disabled by ACPI
[ 1297.728863] pci 0000:02:00.0: [8086:1576] type 01 class 0x060400
[ 1297.729030] pci 0000:02:00.0: supports D1 D2
[ 1297.729032] pci 0000:02:00.0: PME# supported from D0 D1 D2 D3hot D3cold
[ 1297.729187] pci 0000:02:01.0: [8086:1576] type 01 class 0x060400
[ 1297.729353] pci 0000:02:01.0: supports D1 D2
[ 1297.729356] pci 0000:02:01.0: PME# supported from D0 D1 D2 D3hot D3cold
[ 1297.729510] pci 0000:02:02.0: [8086:1576] type 01 class 0x060400
[ 1297.729680] pci 0000:02:02.0: supports D1 D2
[ 1297.729682] pci 0000:02:02.0: PME# supported from D0 D1 D2 D3hot D3cold
[ 1297.729854] pci 0000:01:00.0: PCI bridge to [bus 0-39]
[ 1297.729866] pci 0000:01:00.0:   bridge window [mem 0xc4000000-0xda0fffff]