https://bugzilla.kernel.org/show_bug.cgi?id=199389
Bug ID: 199389
Summary: `Added _OSI(Linux-Dell-Video)` shown on Lenovo system
Product: ACPI
Version: 2.5
Kernel Version: 4.16+
Hardware: All
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Other
Assignee: acpi_ot...@kernel-bugs.osdl.org
Reporter: pmenzel+bugzilla.kernel....@molgen.mpg.de
Regression: No
On a Lenovo X60t with coreboot, current Linux master shows the message `Added
_OSI(Linux-Dell-Video)`, which is confusing as it is not a Dell system.
[…]
[ 0.152111] calling acpi_init+0x0/0x34b @ 1
[ 0.152142] ACPI: Added _OSI(Module Device)
[ 0.152210] ACPI: Added _OSI(Processor Device)
[ 0.152276] ACPI: Added _OSI(3.0 _SCP Extensions)
[ 0.152342] ACPI: Added _OSI(Processor Aggregator Device)
[ 0.152411] ACPI: Added _OSI(Linux-Dell-Video)
[ 0.157852] ACPI: 2 ACPI AML tables successfully acquired and loaded
[ 0.159362] ACPI: [Firmware Bug]: BIOS _OSI(Linux) query ignored
[ 0.162111] ACPI: EC: EC started
[…]
This was added in the commit below.
commit 9251a71db62ca9cc7e7cf364218610b0f018c291
Author: Alex Hung <alex.h...@canonical.com>
Date: Wed Feb 28 19:27:55 2018 -0800
ACPI / OSI: Add OEM _OSI strings to disable NVidia RTD3
A number of Dell systems require an OEM _OSI string "Linux-Dell-Video"
as a BIOS workaround to disable RTD3 which causes systems hangs when
NVidia graphics cards are installed. The affected Dell systems are
with system IDs: 0818, 0819, 0820, 0850, 0851, 086F, 0870, 0885 and
0886.
The form of the OEM _OSI strings is defined by each OEMs and is
discussed in Documentation/acpi/osi.txt.
Signed-off-by: Alex Hung <alex.h...@canonical.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wyso...@intel.com>
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