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October 17th, 2019 21:00

XPS 15 9560 firmware ("BIOS")1.16.0 bug: ACPI redefinitions

(UEFI Firmware is not BIOS.  That term refers to pre-UEFI firmware that provided Basic Input/Output Services for DOS..  UEFI firmware can optionally provide such services with a module called CSM.)

It is easy to capture the ACPI tables and disassemble them using Intel's iasl tool.  If you do that with Firmware version 1.16.0, these errors will be reported:

Warning - Emitting ASL code "External (APRE)"
This is a conflicting declaration with some other declaration within the ASL code.
This external declaration may need to be deleted in order to recompile the dsl file.

Warning - Emitting ASL code "External (BNUM)"
This is a conflicting declaration with some other declaration within the ASL code.
This external declaration may need to be deleted in order to recompile the dsl file.

Warning - Emitting ASL code "External (DLPN)"
This is a conflicting declaration with some other declaration within the ASL code.
This external declaration may need to be deleted in order to recompile the dsl file.

Warning - Emitting ASL code "External (IDMN)"
This is a conflicting declaration with some other declaration within the ASL code.
This external declaration may need to be deleted in order to recompile the dsl file.

Warning - Emitting ASL code "External (IDPC)"
This is a conflicting declaration with some other declaration within the ASL code.
This external declaration may need to be deleted in order to recompile the dsl file.

How can I communicate this problem to the Dell engineers?

35 Posts

October 18th, 2019 06:00

I got a reply from a Dell bot.  Essentially: your warranty is up (true) so we don't care.

This is a problem with all Dell notebooks with this firmware.  And likely with all other versions of the firmware too.

Perhaps someone with a warranty could report the bug.

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