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**chrisram** · 09-21-2013, 02:28 PM

Re: PCI Express Active-State Power Management (ASPM) Disabled

Most likely you or someone disabled the feature in the BIOS. I would look there first.

**parsec** · 09-22-2013, 10:18 AM

Re: PCI Express Active-State Power Management (ASPM) Disabled

Originally posted by jtc1150 View Post

PCI Express Active-State Power Management (ASPM) Disabled. This error message appears in Powercfg -energy report. It appears to be causing my PC to not enter sleep mode as per Power Config settings. Which are set to sleep when PC is idle for 30 minutes. I have reviewed all of the suggestion in the Windows 7 Forum and none of those suggestions work. Does anyone know how to fix this problem?

When is an error not an error? Depends on what is judging what an error is and why.

The Powercfg energy report is biased towards anything that is not in a power saving mode or configuration as an error. If your board's BIOS allows you to set the speed of the PCI-E slots, as in "PCI-E 2.0" or "PCI-E 3.0", then that locks them at that speed, or should do so. When set to "Auto" with modern video cards, under low demand situations (browsing the Internet, not gaming), the PCI-E speed will downshift to PCI-E 1.0 speed, even with a board and video card that supports PCI-E 3.0.

Next, the Windows Power Plan has an Advanced option under "PCI Express" called "Link State Power Management", that can be set to Off, Moderate, or Maximum power savings. It sounds like that is set to Off on your board, or the settings in your BIOS are not set to Auto as I described above, or both.

Which one of these causes the Powercfg report to flag an "error"? Or is it both? I don't know.

I'm having a Sleep problem myself, I enter Sleep and the board wakes within seconds, when previously that would not happen. I tried setting the PCI-E speed to Auto in the BIOS, and set that Power Plan setting to Maximum power savings, and it did not fix it. It might work for you, so well worth a try.

Sleep issues can be very difficult to fix. In my case, I think it was caused by either installing or using some software (Samsung's disk cloning tool for their SSDs), as AFAIK the problem started after I installed and used it. I removed it and the problem remains. I suspect that some internal setting or registry entry that was not changed back when that software was uninstalled is causing the problem, but I'm not certain. The problem happens with the newly cloned SSD too. I have yet to try a full BIOS/UEFI clear by removing the board's battery. If that fails, then that indicates IMO that it is a Windows setting... somewhere...

**ProBackup-nl** · 08-30-2014, 08:29 AM

Re: PCI Express Active-State Power Management (ASPM) Disabled

Even with the PCI-E speed to Auto in the firmware/BIOS the ASRock H81 Pro BTC P1.80 firmware actively disables PCI Express Active-State Power Managment (ASPM).

Despite that the default Ubuntu 14.04 requires the version 8.038 of the r8168-dkms package (currently only in Utopic repository) to allow the processor to go in to package state C6 (pc6) for the RTL8111GR onboard device, another requirement is that ASPM is Enabled.

However even boot parameter pcie_aspm=force doesn't enable ASPM for the H81 Pro BTC P1.80, where enabling the PCI registers manually does enable ASPM, makes the Celeron G1820 processor go in to PC6 and lowers the idle power consumption by 8 till 14 watts:

Code:

# cat /proc/cmdline
BOOT_IMAGE=/boot/vmlinuz-3.13.0-35-generic root=/dev/sda1 ro intel_pstate=enable ipv6.disabled=1 pcie_aspm=force debug ignore_loglevel crashkernel=384M-:128M
# lspci -vvvv | grep ASPM
        LnkCap:    Port #2, Speed 5GT/s, Width x16, ASPM L0s L1, Exit Latency L0s <1us, L1 <8us
        LnkCtl:    ASPM Disabled; RCB 64 bytes Disabled- CommClk-
        LnkCap:    Port #1, Speed 5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <1us, L1 <4us
        LnkCtl:    ASPM Disabled; RCB 64 bytes Disabled- CommClk-
        LnkCap:    Port #6, Speed 5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <512ns, L1 <16us
        LnkCtl:    ASPM Disabled; RCB 64 bytes Disabled- CommClk+
        LnkCap:    Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s unlimited, L1 <64us
        LnkCtl:    ASPM Disabled; RCB 64 bytes Disabled- CommClk+
# setpci -s 00:01.00 0xB0.B=0x3
# setpci -s 00:1c.0 0x50.B=0x43
# setpci -s 00:1c.05 0x50.B=0x43
# setpci -s 03:00.0 0x80.B=0x43
# lspci -vvvv | grep ASPM
        LnkCap:    Port #2, Speed 5GT/s, Width x16, ASPM L0s L1, Exit Latency L0s <1us, L1 <8us
        LnkCtl:    ASPM L0s L1 Enabled; RCB 64 bytes Disabled- CommClk-
        LnkCap:    Port #1, Speed 5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <256ns, L1 <4us
        LnkCtl:    ASPM L0s L1 Enabled; RCB 64 bytes Disabled- CommClk+
        LnkCap:    Port #6, Speed 5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <512ns, L1 <16us
        LnkCtl:    ASPM L0s L1 Enabled; RCB 64 bytes Disabled- CommClk+
        LnkCap:    Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s unlimited, L1 <64us
        LnkCtl:    ASPM L0s L1 Enabled; RCB 64 bytes Disabled- CommClk+

Note: The setpci command is closely hardware related. I expect that can't copy and paste these parameters when you are not running identical hardware and firmware. There is a manual how to find the correct parameters for your device: ASPM - Linux Wireless and a handy script at http://drvbp1.linux-foundation.org/~...ts/enable-aspm (although I couldn't manage how to find the ROOT_COMPLEX to I filled in identical values at both ROOT_COMPLEX and ENDPOINT).

Another proof that ASPM is actively disabled in ASRock its firmware:

Code:

# dmesg | grep ASPM
[    0.084410] ACPI FADT declares the system doesn't support PCIe ASPM, so disable it
[    0.126068] acpi PNP0A08:00: Disabling ASPM (FADT indicates it is unsupported)

**parsec** · 08-30-2014, 11:17 AM

Re: PCI Express Active-State Power Management (ASPM) Disabled

I've noticed that an Auto setting in ASRock BIOS/UEFI firmware behaves in whatever manner the designers choose, which may not match what we expect it to do.

Do rules or standards for an Auto setting for a firmware option exist?

Even if there is a standard, a particular board may have its Auto option settings biased for the specific use of that board. For example your H81 Pro BTC board has PCI Express Active-State Power Management disabled on Auto, because the designers decided that a Bit Coin mining board and its users would want full performance at all times. That may not make logical sense to you and in reality, but other users might think full performance regardless of load is better.

I noticed that an Auto setting for CPU C States seemed to leave them disabled on my (different) ASRock boards. That was also true for the FIVR Efficiency Mode option, an Auto setting disabled it.

I don't trust Auto settings to do what I want them to do, and always choose enabled if I want an option enabled.

**ProBackup-nl** · 09-10-2014, 09:55 AM

Re: PCI Express Active-State Power Management (ASPM) Disabled

Originally posted by parsec View Post

For example your H81 Pro BTC board has PCI Express Active-State Power Management disabled on Auto

I do wish that this Asrock H81 Pro BTC board firmware/BIOS has a "PCI Express Active-State Power Management" setting. The issue is that there is not such setting in version P1.80 neither P1.80A. There is only PCIE2 Link Speed in the "Chipset Configuration".

The result is that with a default Ubuntu 14.04 Linux kernel and no special kernel boot parameters, the idle power consumption is 11.73kWh per month (30 days). After enabling PCIe active state manually (using setpci) for all 4 PCIe devices and implementing all powertop suggestions the idle power consumption is 8.35kWh: a reduction in energy usage of almost 28%.

With Linux kernel 3.13 the boot parameters pcie_aspm.policy=powersave doesn't improve L0s enablement, pcie_aspm=force enables L0s on the Realtek device, while combining pcie_aspm=force pcie_aspm.policy=powersave results in L0s on 3 devices out of 4.

The results and devices:

Code:

# lspci -s 00:01.00 -nn
00:01.0 PCI bridge [0604]: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor PCI Express x16 Controller [8086:0c01] (rev 06)
# lspci -s 00:1c.00 -nn
00:1c.0 PCI bridge [0604]: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #1 [8086:8c10] (rev d5)
# lspci -s 00:1c.05 -nn
00:1c.5 PCI bridge [0604]: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #6 [8086:8c1a] (rev d5)
# lspci -s 03:00.00 -nn
03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 11)
===
	LnkCap:	Port #2, Speed 5GT/s, Width x16, ASPM L0s L1, Exit Latency L0s <1us, L1 <8us
	LnkCtl:	ASPM Disabled; RCB 64 bytes Disabled- CommClk-
	LnkCap:	Port #1, Speed 5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <1us, L1 <4us
	LnkCtl:	ASPM L0s Enabled; RCB 64 bytes Disabled- CommClk-
	LnkCap:	Port #6, Speed 5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <512ns, L1 <16us
	LnkCtl:	ASPM Disabled; RCB 64 bytes Disabled- CommClk+
	LnkCap:	Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s unlimited, L1 <64us
	LnkCtl:	ASPM Disabled; RCB 64 bytes Disabled- CommClk+
pcie_aspm.policy=powersave
	LnkCap:	Port #2, Speed 5GT/s, Width x16, ASPM L0s L1, Exit Latency L0s <1us, L1 <8us
	LnkCtl:	ASPM Disabled; RCB 64 bytes Disabled- CommClk-
	LnkCap:	Port #1, Speed 5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <1us, L1 <4us
	LnkCtl:	ASPM L0s Enabled; RCB 64 bytes Disabled- CommClk-
	LnkCap:	Port #6, Speed 5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <512ns, L1 <16us
	LnkCtl:	ASPM Disabled; RCB 64 bytes Disabled- CommClk+
	LnkCap:	Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s unlimited, L1 <64us
	LnkCtl:	ASPM Disabled; RCB 64 bytes Disabled- CommClk+
pcie_aspm=force
	LnkCap:	Port #2, Speed 5GT/s, Width x16, ASPM L0s L1, Exit Latency L0s <1us, L1 <8us
	LnkCtl:	ASPM Disabled; RCB 64 bytes Disabled- CommClk-
	LnkCap:	Port #1, Speed 5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <1us, L1 <4us
	LnkCtl:	ASPM L0s Enabled; RCB 64 bytes Disabled- CommClk-
	LnkCap:	Port #6, Speed 5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <512ns, L1 <16us
	LnkCtl:	ASPM Disabled; RCB 64 bytes Disabled- CommClk+
	LnkCap:	Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s unlimited, L1 <64us
	LnkCtl:	ASPM L0s Enabled; RCB 64 bytes Disabled- CommClk+
pcie_aspm=force pcie_aspm.policy=powersave
	LnkCap:	Port #2, Speed 5GT/s, Width x16, ASPM L0s L1, Exit Latency L0s <1us, L1 <8us
	LnkCtl:	ASPM Disabled; RCB 64 bytes Disabled- CommClk-
	LnkCap:	Port #1, Speed 5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <1us, L1 <4us
	LnkCtl:	ASPM L0s Enabled; RCB 64 bytes Disabled- CommClk-
	LnkCap:	Port #6, Speed 5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s <512ns, L1 <16us
	LnkCtl:	ASPM L0s Enabled; RCB 64 bytes Disabled- CommClk+
	LnkCap:	Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Exit Latency L0s unlimited, L1 <
	LnkCtl:	ASPM L0s Enabled; RCB 64 bytes Disabled- CommClk+

**- wardog -** · 09-10-2014, 05:13 PM

Re: PCI Express Active-State Power Management (ASPM) Disabled

Originally posted by ProBackup-nl View Post

I do wish that this Asrock H81 Pro BTC board firmware/BIOS has a "PCI Express Active-State Power Management" setting.

Not throwing salt in your wounds yet I see it as you simply bought the wrong board for the purpose. Miners using the mining specific BTC boards would have no use for ASPM in the setup/BIOS. Quite the contrary. They would care less and in fact be considered as useless as **** on a boar hog on a dedicate mining rig.

Originally posted by ProBackup-nl View Post

The issue is that there is not such setting in version P1.80 neither P1.80A.

If your board can yet be returned for exchange, that's what I would do. I'd get a main stream board with the proper bells and whistles to run a server or desktop. But what you have now is for mining, short and simple.

**ProBackup-nl** · 09-11-2014, 05:26 AM

Re: PCI Express Active-State Power Management (ASPM) Disabled

We can't use the Asrockrack options because those main boards have a minimal 30 seconds boot slow down due to the Aspeed BMC controller.

Many other Asrock boards have ASPM disabled, see below.

Which proper socket 1150 board would you suggest?

Asrock Q1900B-ITX seems to have ASPM disabled too: Asrock Q1900B-ITX - Page 2
Asrock A785GXH/128M until firmware version L1.31: ASRock > A785GXH/128M
Asrock Visionx 420D: AnandTech Portal | VisionX 420D Review: ASRock's mini-PC Lineup Continues to Impress
ASRock H87M-ITX and Q878M vPro: Probleme mit Package-C-States (Windows / Linux)

**ProBackup-nl** · 09-12-2014, 01:21 PM

Re: PCI Express Active-State Power Management (ASPM) Disabled

Luckily firmware/BIOS 1.80b for H81 Pro BTC opens all ASPM options (under
Chipset Configuration):

Native ASPM [Default: Disabled] - On enable, Vista will control the ASPM support for the device. If disabled, the BIOS will.
PEG0 - ASPM [Default: ASPM L0sL1] - Control ASPM support for the PEG Device. This has no effect if PEG is not the currently active device.
ASPM L0s [Default: Both Root and Endpoint ports] - Enable PCIe ASPM L0s.
PEG1 - ASPM [Default: Disabled] - Control ASPM support for the PEG Device. This has no effect if PEG is not the currently active device.
ASPM L0s [Default: Both Root and Endpoint ports] - Enable PCIe ASPM L0s.
PEG2 - ASPM [Default: Disabled] - Control ASPM support for the PEG Device. This has no effect if PEG is not the currently active device.
ASPM L0s [Default: Both Root and Endpoint ports] - Enable PCIe ASPM L0s.
Program PCIe ASPM after OpROM [Default: Disabled] - Enabled: PCIe ASPM will be programmed after OpROM. Disabled: PCIe ASPM will be programmed before OpROM.
DMI Link ASPM Control [Default: Disabled] - Enable or disable the control of Active State Power Management on SA side of the DMI Link.

Note: PEG = PCI Express Graphics

**ProBackup-nl** · 09-12-2014, 02:44 PM

Re: PCI Express Active-State Power Management (ASPM) Disabled

Despite the new P1.80B firmware/BIOS version, where ASMP can be enabled in the setup utility, the ACPI FADT doesn't seem to match these settings:

Code:

# dmesg | grep ASPM
[    0.082290] ACPI FADT declares the system doesn't support PCIe ASPM, so disable it
[    0.114380] acpi PNP0A08:00: _OSC: OS supports [ExtendedConfig ASPM ClockPM Segments MSI]
[    0.123717] acpi PNP0A08:00: Disabling ASPM (FADT indicates it is unsupported)

Whether "Program PCIe ASPM after OpROM" is enabled or disabled doesn't matter.

The FADT/FACP still list that ASPM is not supported, while ASPM is enabled in UEFI firmware setup utility:

Code:

# fwts acpidump -

[0x06d 0109   2]             IA-PC Boot Flags (see below): 0x0012
                            Legacy Devices Supported (V2): 0x0
                         8042 present on ports 60/64 (V2): 0x1
                                     VGA Not Present (V4): 0x0
                                   MSI Not Supported (V4): 0x0
                             PCIe ASPM Not supported (V4): 0x1
                                CMOS RTC Not Present (V5): 0x0

Full fwts acpidump output: fwts acpidump output for Asrock H81 Pro BTC Linux 3.13 - Pastebin.com

**ProBackup-nl** · 09-18-2014, 07:04 PM

Re: PCI Express Active-State Power Management (ASPM) Disabled

Despite the new ASPM options in BIOS version P1.80B, Windows 8.1 Pro its powercfg -energy command over also results in:

Platform Power Management Capabilities:PCI Express Active-State Power Management (ASPM) Disabled
PCI Express Active-State Power Management (ASPM) has been disabled due to a known incompatibility with the hardware in this computer.

**NerdBlerg** · 10-02-2014, 10:04 PM

Re: PCI Express Active-State Power Management (ASPM) Disabled

Where are you guys getting this 1.80B version? I don't see it on their site anywhere. Would like to play with ASPM settings some I'm currently around 23W when idle.

**parsec** · 10-03-2014, 01:14 AM

Re: PCI Express Active-State Power Management (ASPM) Disabled

Originally posted by ProBackup-nl View Post

Despite the new ASPM options in BIOS version P1.80B, Windows 8.1 Pro its powercfg -energy command over also results in:

Platform Power Management Capabilities:PCI Express Active-State Power Management (ASPM) Disabled
PCI Express Active-State Power Management (ASPM) has been disabled due to a known incompatibility with the hardware in this computer.

My questions about the "... known incompatibility with the hardware in this computer" are:

Is this statement about why ASPM is disabled an accurate conclusion? In other words, is it true?

If correct, is this mystery hardware part of the mother board itself, or something connected to the board?

Assuming this assessment is correct, if the incompatible hardware is on the board and can be disabled, ASPM might then work.

EDIT: My ASRock Z97 board PC also has this message in the powercfg -energy report, not that I'm concerned since I have nothing connected to the PCIe slots.

This message's information about the fault, a known incompatibility with the hardware, may be a worthless, general reason for this condition. I'll run the energy report on some other PCs (non-ASRock boards) but I doubt they will be different.

After looking at the new BIOS options you have, do you know if the PCIe devices you are using support ASPM? That could be the hardware incompatibility.

NerdBlerg, the 1.80B BIOS is probably a custom BIOS created for the OP, after talking with ASRock support.

**ProBackup-nl** · 10-04-2014, 06:28 AM

Re: PCI Express Active-State Power Management (ASPM) Disabled

Originally posted by parsec View Post

If correct, is this mystery hardware part of the mother board itself, or something connected to the board?

No PCI express cards are connected to the board.

Originally posted by parsec View Post

Assuming this assessment is correct, if the incompatible hardware is on the board and can be disabled, ASPM might then work.

With the H81 Pro BTC board I did not find any incompatible hardware when using Linux and enabling L0s and L1 for each PCI ASPM device using the setpci command.

Originally posted by parsec View Post

I'll run the energy report on some other PCs (non-ASRock boards) but I doubt they will be different.

Same opinion here, I tried 11 Intel Series 8 chipset boards ranging from H81 to Z87 and all state in their ACPI FACP table BOOT_FLAGS[4] bit that ASPM is not supported: PCIe ASPM Not supported (V4): 0x1
"If set, indicates to OSPM that it must not enable OSPM ASPM control on this platform" (i.e. 5.2.9.3 IA-PC Boot Architecture Flags in ACPI Spec 5.1).

"If the BIOS indicates that the platform does not properly support ASPM, the operating system disables ASPM. This can be conveyed in the ACPI fixed ACPI description table (FADT) table IAPC_BOOT_ARCH flags by setting the PCIe ASPM Controls bit to 1".
source: ASPM implementation on Windows Vista

Originally posted by parsec View Post

After looking at the new BIOS options you have, do you know if the PCIe devices you are using support ASPM?

I don't know. I just try. And yes the system does not reboot, freeze, crash, hang, outputs errors or otherwise mailfunctions when enabling ASPM. So whether the system supports it or not, if it doesn't break and it saves power (25% I have measured) it works to me. And no, I don't need support. Sometimes the word "support" reads to me like "manufacturer may expect extra inbound communication" and the manufacturer thinks "no, we don't want to put any burden on our support department, so we just say that we don't support it". To compare this to the ASRock case: ASRock doesn't support Linux, but it doesn't mean that Linux won't run (reliable) on ASRock hardware.

Originally posted by parsec View Post

NerdBlerg, the 1.80B BIOS is probably a custom BIOS created for the OP, after talking with ASRock support.

Exactly, and I am hoping for a version 1.80C BIOS that opens up the BIOS even more so that the PCIe ASPM Not supported (V4): flag can be turned to 0x0, like it is possible on Asus H81M-A with their "Native ASPM" [Disabled]->[Enabled] <- after enabling this setting the FACP "PCIe ASPM Not supported (V4)" bit was flipped.

**parsec** · 10-04-2014, 12:19 PM

Re: PCI Express Active-State Power Management (ASPM) Disabled

The best you may be able to get is using the setpci command, which did work to a degree, right? Or do you expect more power savings?

I can tell you that low end processors like a Pentium G3258 I have do not support the highest C States or high package C States. My Pentium will not go into C7, and Package C State is at C3 if I remember correctly. My i5-4670K will go to C7, and C6 package C States. Given my Pentium's behavior, I can't imagine a Celeron would be different, or possibly worse is possible.

The Intel Haswell processor data sheet mentions ASPM only once or twice. The 8 series chipset datasheet has more information about ASPM, so control of it is determined by the chipset registers and BIOS, as you know. Checking the extent of the H81's support for ASPM may be a good idea, all chipsets do not have all possible capabilities.

ASRock may have provided the new options for you in that BIOS, but likely did not spend much time checking them.

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PCI Express Active-State Power Management (ASPM) Disabled

PCI Express Active-State Power Management (ASPM) Disabled

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