发布时间 2017-11-06 17:53:30
RM issue occured with HP ZBOOK +eGPU
RM gets the VBIOS through ACPI calls basically function acpi_evaluate_object with values ACPI_TYPE_INTEGER along with offset and length to read. ACPI returns proper value and data.
But in failing case i.r eGpu + iGpu after reboot, this call fails with value 5 and looks that it represent AE_NOT_FOUND and since RM is not able to get VBIOS, RMInit failure occurs.