Hello,

Here is the output of dmidecode.

I tried "acpi_osi=!Linux" and still got the same message:

ACPI: System BIOS is requesting _OSI(Linux)
ACPI: Please test with "acpi_osi=!Linux"
Please send dmidecode to linux-acpi@vger.kernel.org

in addition, there was:

ACPI: Disabled _OSI(Linux)


Cheers,
Anne-Simone