I have installed Xubuntu in dual boot with Windows 8.1 on my laptop Acer aspire VN7. All works pretty well but I have these messages after the post :
[ 10.238730] mtd device must be supplied (device name is empty)
[ 21.300623] ACPI BIOS Error (bug): Could not resolve symbol [\_SB.PCIO.GFXO.D
D02._BCL], AE_NOT_FOUND (20210730/psargs-330)
[ 21.300646] ACPI ERROR: Aborting method \_SB.PCIO.PEGO.PEGP.DD02._BCL due to
previous error (AE_NOT_FOUND) (20210730/psparse-529)
[ 21.867936]
I don't know if it is related but I have enabled automount before login of the Acer partition which is on disk C and of the Data partition on the disk D while Xubuntu is installed on a partition on the disk D. I used the Disks application of Xubuntu to enable the automount.
Question : Is there something I have to do ?