Tested in kernel 4.2.0-040200rc8-generic. Temperature is OK (no higher
than 70°C).
** Tags added: kernel-fixed-upstream
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1482944
Title:
3.13.0-58 (also 3.13.0-59, 61) bursting Lenovo Y470N
Status in linux package in Ubuntu:
Confirmed
Bug description:
Update: it seems that this change happened in 3.13.0-58, not
3.13.0-59.
I observed the temperature for a hour running in 3.13.0-58 and
3.13.0-57 without any operation. And found that the temperature using
3.13.0-57 is only around 50°C. So it seems that the problem started at
3.13.0-58 and was getting worse ever since.
Here is the temperature in 3.13.0-57 when writing this update.
~$ sudo sensors
acpitz-virtual-0
Adapter: Virtual device
temp1: +48.0°C (crit = +127.0°C)
coretemp-isa-0000
Adapter: ISA adapter
Physical id 0: +49.0°C (high = +86.0°C, crit = +100.0°C)
Core 0: +49.0°C (high = +86.0°C, crit = +100.0°C)
Core 1: +47.0°C (high = +86.0°C, crit = +100.0°C)
----
I noticed my Lenovo Y470N is really hot after switching to kernel
3.13.0-61. Then I installed 3.13.0-59 (which I didn't use before) to
have a test and had the similar phenomenon.
Prior to 3.13.0-59, the usual temperature of my Y470N is around 60°C.
~$ sudo sensors
acpitz-virtual-0
Adapter: Virtual device
temp1: +56.0°C (crit = +127.0°C)
coretemp-isa-0000
Adapter: ISA adapter
Physical id 0: +57.0°C (high = +86.0°C, crit = +100.0°C)
Core 0: +57.0°C (high = +86.0°C, crit = +100.0°C)
Core 1: +56.0°C (high = +86.0°C, crit = +100.0°C)
When I was using 3.13.0-59 or 3.13.0-61. The temperature never goes
down to 65°C. In most cases, it's around 70°C.
~$ sudo sensors
[sudo] password for fkj:
acpitz-virtual-0
Adapter: Virtual device
temp1: +66.0°C (crit = +127.0°C)
coretemp-isa-0000
Adapter: ISA adapter
Physical id 0: +70.0°C (high = +86.0°C, crit = +100.0°C)
Core 0: +70.0°C (high = +86.0°C, crit = +100.0°C)
Core 1: +65.0°C (high = +86.0°C, crit = +100.0°C)
After surfing the web for half an hour this can even up to 90°C. For
example, here's the sensors result after I finish typing this bug
report.
~$ sudo sensors
acpitz-virtual-0
Adapter: Virtual device
temp1: +84.0°C (crit = +127.0°C)
coretemp-isa-0000
Adapter: ISA adapter
Physical id 0: +87.0°C (high = +86.0°C, crit = +100.0°C)
Core 0: +87.0°C (high = +86.0°C, crit = +100.0°C)
Core 1: +83.0°C (high = +86.0°C, crit = +100.0°C)
As a result the fan is getting louder and louder every time. And I can
sense the taste of burnt at the air vent.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-59-generic 3.13.0-59.98
ProcVersionSignature: Ubuntu 3.13.0-59.98-generic 3.13.11-ckt22
Uname: Linux 3.13.0-59-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.11
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: fkj 3006 F.... pulseaudio
CurrentDesktop: Unity
Date: Sun Aug 9 10:46:57 2015
HibernationDevice: RESUME=UUID=17bae1a9-aae0-4a5e-b7b8-4302afae0ed2
InstallationDate: Installed on 2014-04-21 (474 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
MachineType: LENOVO 20090
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-59-generic
root=UUID=a126e324-8d74-496b-8a81-2ce336c46673 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.13.0-59-generic N/A
linux-backports-modules-3.13.0-59-generic N/A
linux-firmware 1.127.14
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/28/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 47CN31WW(V2.09)
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Base Board Product Name
dmi.board.vendor: LENOVO
dmi.board.version: Base Board Version
dmi.chassis.asset.tag: Chassis Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Chassis Manufacturer
dmi.chassis.version: Chassis Version
dmi.modalias:
dmi:bvnLENOVO:bvr47CN31WW(V2.09):bd10/28/2011:svnLENOVO:pn20090:pvrLenovoIdeaPadY470:rvnLENOVO:rnBaseBoardProductName:rvrBaseBoardVersion:cvnChassisManufacturer:ct10:cvrChassisVersion:
dmi.product.name: 20090
dmi.product.version: Lenovo IdeaPad Y470
dmi.sys.vendor: LENOVO
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