From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.messageme.de ([85.93.18.63]:32801 "EHLO mail.mueller.mn" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752265Ab3EUTAU (ORCPT ); Tue, 21 May 2013 15:00:20 -0400 Message-ID: <519BC20F.2000800@mueller.mn> Date: Tue, 21 May 2013 20:50:55 +0200 From: Sebastian MIME-Version: 1.0 To: "linux-acpi@vger.kernel.org" CC: Linux PCI Subject: Re: enabling aspm on ati radeon References: <519443A1.8050905@ubuntu.com> <5196D765.9020600@ubuntu.com> <11045555.dLhhFPGoSV@vostro.rjw.lan> <519B7739.1040909@ubuntu.com> In-Reply-To: <519B7739.1040909@ubuntu.com> Content-Type: text/plain; charset=UTF-8; format=flowed Sender: linux-pci-owner@vger.kernel.org List-ID: I read this thread lately and added the force option to my linux-3.9.2. While most devices enabled ASPM, onboard Ethernet doesnt. Board is an ASRock 760GM-GS3 and Ethernet chip seems to be RTL8111E. According to google it looks like this chip isnt able to ASPM, also LnkCap shows support, if I interpret LnkCap right. Back to topic, my Radeon 5450 Evergreen got ASPM enabled. 01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Manhattan [Mobility Radeon HD 5430 Series] (prog-if 00 [VGA controller]) LnkCap: Port #0, Speed 5GT/s, Width x16, ASPM L0s L1, Latency L0 <64ns, L1 <1us ClockPM- Surprise- LLActRep- BwNot- LnkCtl: ASPM L0s L1 Enabled; RCB 64 bytes Disabled- Retrain- CommClk+ ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt- Kernel driver in use: radeon 02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06) LnkCap: Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Latency L0 <512ns, L1 <64us ClockPM+ Surprise- LLActRep- BwNot- LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk+ Kernel driver in use: r8169 Am 21.05.2013 15:31, schrieb Phillip Susi: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > On 5/20/2013 4:01 PM, Rafael J. Wysocki wrote: >> I'm pretty sure it's measurable, at least in some cases. Phoronix >> did quite some fuss about a commit that caused ASPM to not work any >> more on some systems some time ago, so he had to be able to measure >> it (and it was called a "major power regression"). > That is why I was trying to get it enabled, but the "major regression" > seems to be caused by Radeons using the ASPM as a cue to enter low > power mode. The energy saved by the bus itself going into the lower > power state I can't imagine is more than a few mW. > > > -----BEGIN PGP SIGNATURE----- > Version: GnuPG v2.0.17 (MingW32) > Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ > > iQEcBAEBAgAGBQJRm3c5AAoJEJrBOlT6nu75MkUH/3qGUjM3BmDFjCJ5kJUaMOCg > Ps3YFcr37JPumLZNLAwAHeL+eZH1v8G1SkDKPFMfPjIMCY4II4xxthFutV6bslQv > PR5w5jjAg/qk0YXEq8CddhdZkVkJw8nKBZiN6jFFcn/c1UgFN39FHCzUTa3sMG2X > +rEM4RHzrtcIJm46KXkI162Dzcnj7UaGTFYUzwMCxzy3XHn8xKMS1tfsM1TW3sqS > ptcqbsy1rObJewAhdnQZ0pzRgLC7zKWkGlLo00JdFW7wChjsVbM2db++FlpkCT0W > sHSSEEYLFqef+fU9FHptJklMx31nF8QHDGh3S277YqTuIaanMufo+gx4vHJC3tM= > =tcAW > -----END PGP SIGNATURE----- > -- > To unsubscribe from this list: send the line "unsubscribe linux-acpi" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html