[ 1.121931] ACPI Error: [\_SB_.PCI0.GFX0.DD02._BCL] Namespace lookup failure, AE_NOT_FOUND (20150930/psargs-359)
[ 1.121935] ACPI Error: Method parse/execution failed [\_SB.PCI0.RP05.PEGP.DD02._BCL] (Node ffff8802468fd2d0), AE_NOT_FOUND (20150930/psparse-542)
[ 15.465421] EXT4-fs (sda2): re-mounted. Opts: errors=remount-ro
[ 37.939752] acpi_call: Cannot get handle: Error: AE_NOT_FOUND
[ 38.035633] acpi_call: Cannot get handle: Error: AE_NOT_FOUND