Power consumption significantly increased after resume from suspend
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Linux |
Invalid
|
Medium
|
|||
linux (Ubuntu) |
Incomplete
|
Undecided
|
Unassigned |
Bug Description
I have a HP Envy 14 laptop with switchable graphics (not sure if this is related with the issue). After disabling the dedicated GPU (and turning it OFF) and and enabling PCIe power saving features, (pcie_aspm=force in grub) the idle power consumption hovers around 14w, a little over what Windows give, but still very good.
However, after suspending and resuming, power consumption goes up, to around 20w reducing battery life significantly. Discrete GPU is still OFF, and there is no process using the CPU.
I am not the only one having this problem. For reference, see:
http://
http://
The first one is a Acer TravelMate Timeline 8371 (without switchable graphics) running Ubuntu 10.04. The second one is another HP Envy, running Ubuntu 10.10. I am running Ubuntu 11.10 amd64 fully updated.
I think this is a important problem and should be studied for the next LTS at least. If I can help with more info, I gladly will.
ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: linux-image-
ProcVersionSign
Uname: Linux 3.0.0-14-generic x86_64
NonfreeKernelMo
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
/dev/snd/
CRDA: Error: [Errno 2] No existe el archivo o el directorio
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xc4500000 irq 44'
Mixer name : 'IDT 92HD81B1X5'
Components : 'HDA:111d7605,
Controls : 14
Simple ctrls : 9
Card1.Amixer.info:
Card hw:1 'Generic'/'HD-Audio Generic at 0xc4420000 irq 46'
Mixer name : 'ATI R6xx HDMI'
Components : 'HDA:1002aa01,
Controls : 4
Simple ctrls : 1
Card1.Amixer.
Simple mixer control 'IEC958',0
Capabilities: pswitch pswitch-joined penum
Playback channels: Mono
Mono: Playback [on]
Date: Wed Dec 28 08:41:46 2011
EcryptfsInUse: Yes
HibernationDevice: RESUME=
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
Lsusb:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 003: ID 10f1:1a25 Importek
MachineType: Hewlett-Packard HP ENVY 14 Notebook PC
ProcKernelCmdLine: BOOT_IMAGE=
RelatedPackageV
linux-
linux-
linux-firmware 1.60
SourcePackage: linux
StagingDrivers: brcmutil mei brcmsmac
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/21/2010
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: F.06
dmi.board.
dmi.board.name: 1436
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 59.1F
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.chassis.
dmi.modalias: dmi:bvnHewlett-
dmi.product.name: HP ENVY 14 Notebook PC
dmi.product.
dmi.sys.vendor: Hewlett-Packard
Changed in linux (Ubuntu): | |
status: | New → Confirmed |
Changed in linux: | |
importance: | Unknown → Medium |
status: | Unknown → Confirmed |
Changed in linux: | |
status: | Confirmed → Invalid |
A little correction. The Acer TravelMate Timeline 8371 HAS switchable graphics, Intel/AMD, similar to the HP Envy. Sorry for the mistake. So, maybe, the problem is related to switching graphics.
However, in that forum post, the OP suggest the problem may be in the i915 driver.