Yes, this bug wasn't present before 11.04. This is when kernel 2.6.38 that disabled ASPM for everyone came in, but when this bug was solved for quite everyone, I've started seeing this issue. Only noticed it recently, because before I was still passing pcie_aspm=force when booting the kernel. And I still see a difference in consumption of 2W between the two modes, going down from 14 to 12 on idle when forcing ASPM to be enabled.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1170836 Title: PCIe ASPM disabled while supported Status in “linux” package in Ubuntu: Incomplete Bug description: I'm quite sure that my computer support PCIe ASPM (since I can force it to be enabled, and gain some watts on consumption), however the kernel disable it with this error: ACPI FADT declares the system doesn't support PCIe ASPM, so disable it I'm wondering is that could be an issue coming from this (a bit earlier in the kernel.log): ACPI Warning: 32/64 FACS address mismatch in FADT - two FACS tables! (20121018/tbfadt-394) ACPI BIOS Bug: Warning: 32/64X FACS address mismatch in FADT - 0xBB649F40/0x00000000BB64CD40, using 32 (20121018/tbfadt-521) I don't know what are relevant informations, so ask me if you would like any log or me to test anything. This is not something new, I have this issue for ages but never reported before. --- ApportVersion: 2.9.2-0ubuntu8 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: archangegabriel 1964 F.... pulseaudio DistroRelease: Ubuntu 13.04 HibernationDevice: RESUME=UUID=94d188b9-7a1a-4ad4-9bf3-f6cecd5dca0e InstallationDate: Installed on 2012-12-16 (124 days ago) InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Alpha amd64 (20121216) MachineType: ASUSTeK Computer Inc. U43Jc MarkForUpload: True Package: linux 3.8.0.19.35 PackageArchitecture: amd64 ProcEnviron: TERM=xterm PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=fr_FR.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.8.0-19-generic root=UUID=7b4efc1b-effe-4316-a61e-a12dba4f9673 ro quiet splash pcie_aspm=force ProcVersionSignature: Ubuntu 3.8.0-19.29-generic 3.8.8 RelatedPackageVersions: linux-restricted-modules-3.8.0-19-generic N/A linux-backports-modules-3.8.0-19-generic N/A linux-firmware 1.106 Tags: third-party-packages raring Uname: Linux 3.8.0-19-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo dmi.bios.date: 11/12/2010 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 216 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: U43Jc dmi.board.vendor: PEGATRON CORPORATION dmi.board.version: 1.0 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: PEGATRON Computer Inc. dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr216:bd11/12/2010:svnASUSTeKComputerInc.:pnU43Jc:pvr1.0:rvnPEGATRONCORPORATION:rnU43Jc:rvr1.0:cvnPEGATRONComputerInc.:ct10:cvr1.0: dmi.product.name: U43Jc dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK Computer Inc. --- ApportVersion: 2.12.5-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: ubuntu 2757 F.... pulseaudio CasperVersion: 1.336ubuntu1 DistroRelease: Ubuntu 13.10 LiveMediaBuild: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1) MachineType: ASUSTeK Computer Inc. U43Jc MarkForUpload: True Package: linux (not installed) ProcFB: 0 inteldrmfb 1 nouveaufb ProcKernelCmdLine: file=/cdrom/preseed/username.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3 RelatedPackageVersions: linux-restricted-modules-3.11.0-12-generic N/A linux-backports-modules-3.11.0-12-generic N/A linux-firmware 1.116 Tags: saucy Uname: Linux 3.11.0-12-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo dmi.bios.date: 11/12/2010 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 216 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: U43Jc dmi.board.vendor: PEGATRON CORPORATION dmi.board.version: 1.0 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: PEGATRON Computer Inc. dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr216:bd11/12/2010:svnASUSTeKComputerInc.:pnU43Jc:pvr1.0:rvnPEGATRONCORPORATION:rnU43Jc:rvr1.0:cvnPEGATRONComputerInc.:ct10:cvr1.0: dmi.product.name: U43Jc dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK Computer Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1170836/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
