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. ==================================================================================================== |
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| {{{sudo fwts bios32 -}}} | {{{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.|| |
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)