Public bug reported:
I have a Samsung Series 7 Chronos 700Z3A-S02DE. It uses an i5-2450m
(Intel HD2000) and an AMD 6490m dedicated graphics card. Since Ubuntu
14.04 uses Linux kernel 3.13 it enables dpm by default. This causes the
graphics card to be shut down to dynoff when not used and should make it
use (almost) no power.
However, the laptop fans are working all the time and the laptop
produces quite a lot of heat (the CPU does not heat as sensors are at
60°C). The sensor for the graphcis card always shows -128°C.
Using powertop it reveals that the laptop consumes around 34W on
battery. Looking on the list where the usage is shown per device it
shows the radeon graphics card with 0%.
I think there is a bug and the graphics card is NOT shutdown correctly
to not use any noticable power.
I would appreciate if I can help you to find the issue and if you need any more
information.
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.tmp.unity.support.test.0:
ApportVersion: 2.14.1-0ubuntu1
Architecture: amd64
CompizPlugins: No value set for
`/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
DistUpgraded: Fresh install
DistroCodename: trusty
DistroRelease: Ubuntu 14.04
DistroVariant: ubuntu
DkmsStatus:
bcmwl, 6.30.223.141+bdcom, 3.13.0-20-generic, x86_64: installed
bcmwl, 6.30.223.141+bdcom, 3.13.0-21-generic, x86_64: installed
bcmwl, 6.30.223.141+bdcom, 3.13.0-23-generic, x86_64: installed
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
Intel Corporation 2nd Generation Core Processor Family Integrated Graphics
Controller [8086:0126] (rev 09) (prog-if 00 [VGA controller])
Subsystem: Samsung Electronics Co Ltd Device [144d:c0b3]
Advanced Micro Devices, Inc. [AMD/ATI] Seymour [Radeon HD 6400M/7400M Series]
[1002:6760] (rev ff) (prog-if ff)
InstallationDate: Installed on 2014-04-01 (7 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Daily amd64 (20140331)
MachineType: SAMSUNG ELECTRONICS CO., LTD. 700Z3A/700Z4A/700Z5A/700Z5B
Package: xserver-xorg-video-ati 1:7.3.0-1ubuntu3
PackageArchitecture: amd64
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.14.0-031400-generic
root=UUID=61e915cb-08a0-4dde-9067-e21c55686387 ro quiet splash vt.handoff=7
Tags: trusty ubuntu compiz-0.9
Uname: Linux 3.14.0-031400-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:
_MarkForUpload: True
dmi.bios.date: 11/06/2012
dmi.bios.vendor: Phoenix Technologies Ltd.
dmi.bios.version: 15FD
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: 700Z3A/700Z4A/700Z5A/700Z5B
dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.board.version: FAB1
dmi.chassis.asset.tag: Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.chassis.version: 0.1
dmi.modalias:
dmi:bvnPhoenixTechnologiesLtd.:bvr15FD:bd11/06/2012:svnSAMSUNGELECTRONICSCO.,LTD.:pn700Z3A/700Z4A/700Z5A/700Z5B:pvr0.1:rvnSAMSUNGELECTRONICSCO.,LTD.:rn700Z3A/700Z4A/700Z5A/700Z5B:rvrFAB1:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvr0.1:
dmi.product.name: 700Z3A/700Z4A/700Z5A/700Z5B
dmi.product.version: 0.1
dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.
version.compiz: compiz 1:0.9.11+14.04.20140404-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.52-1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.0-4ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.0-4ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.15.0-1ubuntu7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
xserver.bootTime: Wed Apr 9 10:44:25 2014
xserver.configfile: default
xserver.errors: RADEON(G0): [XvMC] Failed to initialize extension.
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
xserver.version: 2:1.15.0-1ubuntu7
** Affects: xserver-xorg-video-ati (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-collected compiz-0.9 trusty ubuntu
** Package changed: xserver-xorg-video-intel (Ubuntu) => xserver-xorg-
video-ati (Ubuntu)
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https://bugs.launchpad.net/bugs/1304912
Title:
Ubuntu 14.04 laptop uses lot of power switchable graphics
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