* Regression of Sandy Bridge Power Management
@ 2013-01-10 13:21 Joakim Reinert
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From: Joakim Reinert @ 2013-01-10 13:21 UTC (permalink / raw)
To: linux-kernel
[-- Attachment #1: Type: text/plain, Size: 634 bytes --]
Hello,
i was requested to send a bugreport concerning a regression of the Sandy
Bridge power management. I know for sure that power consumption can be
as low as 8 Watts on my system (for which i will attach hardware specs)
but on all kernels i have tested (mainly >= 3.6 and <= 3.8.rc1) powertop
reports discharge rates reaching from 12 to 30 watts in idle. I know for
a fact that at least 3.0.57 keeps the power consumption in check.
Thanks for looking into this!
P.s.: The attached file contains the output of lshw. The smartest thing
to do would probably be to grep for the relevant information.
Kind regards
Joakim Reinert
[-- Attachment #2: lshw --]
[-- Type: text/plain, Size: 17084 bytes --]
jokkes-x220
description: Notebook
product: 4290W4H ()
vendor: LENOVO
version: ThinkPad X220
serial: R9FYAY9
width: 64 bits
capabilities: smbios-2.6 dmi-2.6 vsyscall32
configuration: administrator_password=disabled chassis=notebook family=ThinkPad X220 power-on_password=disabled uuid=015E5AB8-9851-CB11-BCB5-C258CEB53943
*-core
description: Motherboard
product: 4290W4H
vendor: LENOVO
physical id: 0
version: Not Available
serial: 1ZK6C18J5RL
slot: Not Available
*-cpu
description: CPU
product: Intel(R) Core(TM) i7-2620M CPU @ 2.70GHz
vendor: Intel Corp.
physical id: 1
bus info: cpu@0
version: Intel(R) Core(TM) i7-2620M CPU @ 2.70GHz
serial: Not Supported by CPU
slot: CPU
size: 2701MHz
capacity: 2701MHz
width: 64 bits
clock: 100MHz
capabilities: x86-64 fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp constant_tsc arch_perfmon pebs bts nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid cpufreq
configuration: cores=2 enabledcores=2 threads=4
*-cache:0
description: L1 cache
physical id: 2
slot: L1-Cache
size: 64KiB
capacity: 64KiB
capabilities: synchronous internal write-through data
*-cache:1
description: L2 cache
physical id: 3
slot: L2-Cache
size: 256KiB
capacity: 256KiB
capabilities: synchronous internal write-through data
*-cache:2
description: L3 cache
physical id: 4
slot: L3-Cache
size: 4MiB
capacity: 4MiB
capabilities: synchronous internal write-back unified
*-memory
description: System Memory
physical id: 5
slot: System board or motherboard
size: 12GiB
*-bank:0
description: SODIMM DDR3 Synchronous 1333 MHz (0,8 ns)
product: M471B5273DH0-CH9
vendor: Samsung
physical id: 0
serial: 61DD4B99
slot: ChannelA-DIMM0
size: 4GiB
width: 64 bits
clock: 1333MHz (0.8ns)
*-bank:1
description: SODIMM DDR3 Synchronous 1333 MHz (0,8 ns)
product: 9905428-095.D00LF
vendor: Kingston
physical id: 1
serial: DF26B0AD
slot: ChannelB-DIMM0
size: 8GiB
width: 64 bits
clock: 1333MHz (0.8ns)
*-firmware
description: BIOS
vendor: LENOVO
physical id: 10
version: 8DET64WW (1.34 )
date: 08/31/2012
size: 128KiB
capacity: 8128KiB
capabilities: pci pnp upgrade shadowing cdboot bootselect edd int13floppy720 int5printscreen int9keyboard int14serial int17printer int10video acpi usb biosbootspecification
*-pci
description: Host bridge
product: 2nd Generation Core Processor Family DRAM Controller
vendor: Intel Corporation
physical id: 100
bus info: pci@0000:00:00.0
version: 09
width: 32 bits
clock: 33MHz
*-display
description: VGA compatible controller
product: 2nd Generation Core Processor Family Integrated Graphics Controller
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
version: 09
width: 64 bits
clock: 33MHz
capabilities: msi pm vga_controller bus_master cap_list rom
configuration: driver=i915 latency=0
resources: irq:52 memory:f0000000-f03fffff memory:e0000000-efffffff ioport:5000(size=64)
*-communication:0
description: Communication controller
product: 6 Series/C200 Series Chipset Family MEI Controller #1
vendor: Intel Corporation
physical id: 16
bus info: pci@0000:00:16.0
version: 04
width: 64 bits
clock: 33MHz
capabilities: pm msi bus_master cap_list
configuration: driver=mei latency=0
resources: irq:48 memory:f2625000-f262500f
*-communication:1
description: Serial controller
product: 6 Series/C200 Series Chipset Family KT Controller
vendor: Intel Corporation
physical id: 16.3
bus info: pci@0000:00:16.3
version: 04
width: 32 bits
clock: 66MHz
capabilities: pm msi 16550 cap_list
configuration: driver=serial latency=0
resources: irq:19 ioport:50b0(size=8) memory:f262c000-f262cfff
*-network
description: Ethernet interface
product: 82579LM Gigabit Network Connection
vendor: Intel Corporation
physical id: 19
bus info: pci@0000:00:19.0
logical name: eth0
version: 04
serial: f0:de:f1:83:6c:66
width: 32 bits
clock: 33MHz
capabilities: pm msi cap_list ethernet physical
configuration: broadcast=yes driver=e1000e latency=0 multicast=yes
resources: irq:20 memory:f2600000-f261ffff memory:f262b000-f262bfff ioport:5080(size=32)
*-usb:0
description: USB controller
product: 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2
vendor: Intel Corporation
physical id: 1a
bus info: pci@0000:00:1a.0
version: 04
width: 32 bits
clock: 33MHz
capabilities: pm debug ehci bus_master cap_list
configuration: driver=ehci-pci latency=0
resources: irq:16 memory:f262a000-f262a3ff
*-multimedia
description: Audio device
product: 6 Series/C200 Series Chipset Family High Definition Audio Controller
vendor: Intel Corporation
physical id: 1b
bus info: pci@0000:00:1b.0
version: 04
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: driver=snd_hda_intel latency=0
resources: irq:51 memory:f2620000-f2623fff
*-pci:0
description: PCI bridge
product: 6 Series/C200 Series Chipset Family PCI Express Root Port 1
vendor: Intel Corporation
physical id: 1c
bus info: pci@0000:00:1c.0
version: b4
width: 32 bits
clock: 33MHz
capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
configuration: driver=pcieport
resources: irq:16
*-pci:1
description: PCI bridge
product: 6 Series/C200 Series Chipset Family PCI Express Root Port 2
vendor: Intel Corporation
physical id: 1c.1
bus info: pci@0000:00:1c.1
version: b4
width: 32 bits
clock: 33MHz
capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
configuration: driver=pcieport
resources: irq:17 memory:f2500000-f25fffff
*-network
description: Wireless interface
product: Centrino Advanced-N 6205 [Taylor Peak]
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:03:00.0
logical name: wlan0
version: 34
serial: 08:11:96:02:53:38
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi ip=192.168.2.106 latency=0 multicast=yes wireless=IEEE 802.11abgn
resources: irq:50 memory:f2500000-f2501fff
*-pci:2
description: PCI bridge
product: 6 Series/C200 Series Chipset Family PCI Express Root Port 4
vendor: Intel Corporation
physical id: 1c.3
bus info: pci@0000:00:1c.3
version: b4
width: 32 bits
clock: 33MHz
capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
configuration: driver=pcieport
resources: irq:19 ioport:4000(size=4096) memory:f1d00000-f24fffff ioport:f0400000(size=8388608)
*-pci:3
description: PCI bridge
product: 6 Series/C200 Series Chipset Family PCI Express Root Port 5
vendor: Intel Corporation
physical id: 1c.4
bus info: pci@0000:00:1c.4
version: b4
width: 32 bits
clock: 33MHz
capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
configuration: driver=pcieport
resources: irq:16 ioport:3000(size=4096) memory:f1500000-f1cfffff ioport:f0c00000(size=8388608)
*-generic
description: System peripheral
product: MMC/SD Host Controller
vendor: Ricoh Co Ltd
physical id: 0
bus info: pci@0000:0d:00.0
version: 07
width: 32 bits
clock: 33MHz
capabilities: msi pm pciexpress bus_master cap_list
configuration: driver=sdhci-pci latency=0
resources: irq:16 memory:f1500000-f15000ff
*-pci:4
description: PCI bridge
product: 6 Series/C200 Series Chipset Family PCI Express Root Port 7
vendor: Intel Corporation
physical id: 1c.6
bus info: pci@0000:00:1c.6
version: b4
width: 32 bits
clock: 33MHz
capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
configuration: driver=pcieport
resources: irq:18 memory:f1400000-f14fffff
*-usb
description: USB controller
product: uPD720200 USB 3.0 Host Controller
vendor: NEC Corporation
physical id: 0
bus info: pci@0000:0e:00.0
version: 04
width: 64 bits
clock: 33MHz
capabilities: pm msi msix pciexpress xhci cap_list
configuration: driver=xhci_hcd latency=0
resources: irq:18 memory:f1400000-f1401fff
*-usb:1
description: USB controller
product: 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1
vendor: Intel Corporation
physical id: 1d
bus info: pci@0000:00:1d.0
version: 04
width: 32 bits
clock: 33MHz
capabilities: pm debug ehci bus_master cap_list
configuration: driver=ehci-pci latency=0
resources: irq:23 memory:f2629000-f26293ff
*-isa
description: ISA bridge
product: QM67 Express Chipset Family LPC Controller
vendor: Intel Corporation
physical id: 1f
bus info: pci@0000:00:1f.0
version: 04
width: 32 bits
clock: 33MHz
capabilities: isa bus_master cap_list
configuration: driver=lpc_ich latency=0
resources: irq:0
*-storage
description: SATA controller
product: 6 Series/C200 Series Chipset Family 6 port SATA AHCI Controller
vendor: Intel Corporation
physical id: 1f.2
bus info: pci@0000:00:1f.2
version: 04
width: 32 bits
clock: 66MHz
capabilities: storage msi pm ahci_1.0 bus_master cap_list
configuration: driver=ahci latency=0
resources: irq:47 ioport:50a8(size=8) ioport:50bc(size=4) ioport:50a0(size=8) ioport:50b8(size=4) ioport:5060(size=32) memory:f2628000-f26287ff
*-serial
description: SMBus
product: 6 Series/C200 Series Chipset Family SMBus Controller
vendor: Intel Corporation
physical id: 1f.3
bus info: pci@0000:00:1f.3
version: 04
width: 64 bits
clock: 33MHz
configuration: driver=i801_smbus latency=0
resources: irq:18 memory:f2624000-f26240ff ioport:efa0(size=32)
*-scsi
physical id: 0
logical name: scsi0
capabilities: emulated
*-disk
description: ATA Disk
product: M4-CT256M4SSD1
physical id: 0.0.0
bus info: scsi@0:0.0.0
logical name: /dev/sda
version: 000F
serial: 00000000123709163335
size: 238GiB (256GB)
capabilities: gpt-1.00 partitioned partitioned:gpt
configuration: ansiversion=5 guid=79a18975-5a80-4941-adf7-5ce5ae219327 sectorsize=512
*-volume:0
description: Windows FAT volume
vendor: MSDOS5.0
physical id: 1
bus info: scsi@0:0.0.0,1
logical name: /dev/sda1
logical name: /boot/efi
version: FAT32
serial: c84d-1260
size: 95MiB
capacity: 99MiB
capabilities: boot precious readonly hidden nomount fat initialized
configuration: FATs=2 filesystem=fat mount.fstype=vfat mount.options=rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro name=EFI system partition state=mounted
*-volume:1
description: reserved partition
vendor: Windows
physical id: 2
bus info: scsi@0:0.0.0,2
logical name: /dev/sda2
serial: cd532157-b092-4c4a-9abc-311e2071ee3a
capacity: 127MiB
capabilities: nofs precious readonly hidden nomount
configuration: name=Microsoft reserved partition
*-volume:2
description: Windows NTFS volume
vendor: Windows
physical id: 3
bus info: scsi@0:0.0.0,3
logical name: /dev/sda3
version: 3.1
serial: de847f3b-99e8-3b48-8cf3-19ab372cf50e
size: 63GiB
capacity: 63GiB
capabilities: ntfs initialized
configuration: clustersize=4096 created=2013-01-05 03:00:51 filesystem=ntfs name=Basic data partition state=clean
*-volume:3
description: Windows NTFS volume
vendor: Windows
physical id: 4
bus info: scsi@0:0.0.0,4
logical name: /dev/sda4
logical name: /mnt/storage
version: 3.1
serial: ee05b5ef-70d4-654e-b1f9-71772cbd0aaa
size: 99GiB
capacity: 99GiB
capabilities: ntfs initialized
configuration: clustersize=4096 created=2013-01-05 17:14:45 filesystem=ntfs label=Storage mount.fstype=fuseblk mount.options=rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other,blksize=4096 name=Basic data partition state=mounted
*-volume:4
description: EXT4 volume
vendor: Linux
physical id: 5
bus info: scsi@0:0.0.0,5
logical name: /dev/sda5
logical name: /
version: 1.0
serial: ce17d0bb-39b2-4803-a760-bf8d6d3efc71
size: 74GiB
capacity: 74GiB
capabilities: journaled extended_attributes large_files huge_files dir_nlink recover extents ext4 ext2 initialized
configuration: created=2013-01-05 22:56:46 filesystem=ext4 lastmountpoint=/ modified=2013-01-10 14:40:38 mount.fstype=ext4 mount.options=rw,relatime,commit=600,data=ordered mounted=2013-01-10 13:40:40 name=Linux filesystem state=mounted
*-battery
product: 42T4865
vendor: LGC
physical id: 1
slot: Rear
capacity: 62160mWh
configuration: voltage=11,1V
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2013-01-10 13:21 Regression of Sandy Bridge Power Management Joakim Reinert
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