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Message #132361
[Bug 1451085] Re: Ivy Bridge laptop overheats with intel_pstate enabled
[ WORKAROUND ] add intel_pstate=disable to boot cmdline:
$ cat /proc/cmdline
BOOT_IMAGE=/boot/vmlinuz-3.19.0-26-generic.efi.signed
root=UUID=5ab2d1c9-0f00-470c-9292-58387a5cd983 ro quiet
intel_pstate=disable
Also affecting current generation systems using Ubuntu 15.04:
BIOS Information
Vendor: Dell Inc.
Version: A08
Release Date: 06/08/2015
System Information
Manufacturer: Dell Inc.
Product Name: Inspiron 3646
Base Board Information
Manufacturer: Dell Inc.
Product Name: 0V6D8J
Version: A00
Processor Information
Family: Atom
Version: Intel(R) Pentium(R) CPU J2900 @ 2.41GHz
Max Speed: 2656 MHz
Current Speed: 2426 MHz
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https://bugs.launchpad.net/bugs/1451085
Title:
Ivy Bridge laptop overheats with intel_pstate enabled
Status in linux package in Ubuntu:
Expired
Bug description:
Running 'cpupower frequency-info' shows all my cores running at 2.8GHz
constantly, despite being mostly idle. My laptop was using the
intel_pstate module for CPU frequency governing. I tried switching
between powersave and performance governors but they both showed the
same issue.
WORKAROUND: Add intel_pstate=disabled to my kernel command line.
ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: linux-image-3.19.0-15-generic 3.19.0-15.15
ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
Uname: Linux 3.19.0-15-generic x86_64
ApportVersion: 2.17.2-0ubuntu1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: shaun 1646 F.... pulseaudio
CurrentDesktop: Unity
Date: Sat May 2 13:26:14 2015
HibernationDevice: RESUME=UUID=e9e7a3d6-2d7f-4d2d-8880-ace10b4a942f
InstallationDate: Installed on 2012-09-26 (948 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120905.2)
Lsusb:
Bus 003 Device 004: ID 2232:1024
Bus 003 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: SAMSUNG ELECTRONICS CO., LTD. 900X3C/900X3D/900X4C/900X4D
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.19.0-15-generic root=/dev/mapper/ubuntu-root ro quiet splash intel_pstate=disable vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.19.0-15-generic N/A
linux-backports-modules-3.19.0-15-generic N/A
linux-firmware 1.143
SourcePackage: linux
UpgradeStatus: Upgraded to vivid on 2015-04-24 (8 days ago)
dmi.bios.date: 07/12/2012
dmi.bios.vendor: Phoenix Technologies Ltd.
dmi.bios.version: P03AAC
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: SAMSUNG_NP1234567890
dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.board.version: FAB1
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.chassis.version: 0.1
dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvrP03AAC:bd07/12/2012:svnSAMSUNGELECTRONICSCO.,LTD.:pn900X3C/900X3D/900X4C/900X4D:pvr0.1:rvnSAMSUNGELECTRONICSCO.,LTD.:rnSAMSUNG_NP1234567890:rvrFAB1:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvr0.1:
dmi.product.name: 900X3C/900X3D/900X4C/900X4D
dmi.product.version: 0.1
dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.
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References