aspm

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PCIe ASPM check.
----------------------------------------------------------------------------------------------------
Test 1 of 2: PCIe ASPM ACPI test.
PCIE ASPM is not controlled by Linux kernel.

ADVICE: BIOS reports that Linux kernel should not modify ASPM settings that BIOS configured. It can
be intentional because hardware vendors identified some capability bugs between the motherboard and
the add-on cards.
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Test 2 of 2: PCIe ASPM registers test.
WARNING: Test 2, RP 00h:1Ch.01h L0s not enabled.
WARNING: Test 2, RP 00h:1Ch.01h L1 not enabled.
WARNING: Test 2, Device 03h:00h.00h L0s not enabled.
WARNING: Test 2, Device 03h:00h.00h L1 not enabled.
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ADVICE: The ASPM L0s low power Link state is optimized for short entry and exit latencies, while
providing substantial power savings. Disabling L0s of a PCIe device may increases power consumption,
and will impact the battery life of a mobile system.


ADVICE: The ASPM L1 low power Link state is optimized for maximum power savings with longer entry
and exit latencies. Disabling L1 of a PCIe device may increases power consumption, and will impact
the battery life of a mobile system significantly.

PASSED: Test 2, PCIE aspm setting matched was matched.

====================================================================================================
1 passed, 0 failed, 4 warnings, 0 aborted, 0 skipped, 0 info only.
====================================================================================================

Firmware Test Suite - aspm test

Example output from this test:

PCIe ASPM check.
----------------------------------------------------------------------------------------------------
Test 1 of 2: PCIe ASPM ACPI test.
PCIE ASPM is not controlled by Linux kernel.

ADVICE: BIOS reports that Linux kernel should not modify ASPM settings that BIOS configured. It can
be intentional because hardware vendors identified some capability bugs between the motherboard and
the add-on cards.


Test 2 of 2: PCIe ASPM registers test.
WARNING: Test 2, RP 00h:1Ch.01h L0s not enabled.
WARNING: Test 2, RP 00h:1Ch.01h L1 not enabled.
WARNING: Test 2, Device 03h:00h.00h L0s not enabled.
WARNING: Test 2, Device 03h:00h.00h L1 not enabled.

ADVICE: The ASPM L0s low power Link state is optimized for short entry and exit latencies, while
providing substantial power savings. Disabling L0s of a PCIe device may increases power consumption,
and will impact the battery life of a mobile system.


ADVICE: The ASPM L1 low power Link state is optimized for maximum power savings with longer entry
and exit latencies. Disabling L1 of a PCIe device may increases power consumption, and will impact
the battery life of a mobile system significantly.

PASSED: Test 2, PCIE aspm setting matched was matched.

====================================================================================================
1 passed, 0 failed, 4 warnings, 0 aborted, 0 skipped, 0 info only.
====================================================================================================

Examples:

sudo fwts aspm -

Explanation of test results

Certain test results may require a little more explanation. This section will try and give some context to specific test failures.

Error ID

Explanation

PCIEASPM_UNMATCHED

123.

FirmwareTestSuite/Reference/aspm (last edited 2016-01-11 07:25:57 by anthonywong)