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lipin
April 24th, 2009, 11:03 AM
Hello,

I've just installed new netbook ubuntu 9.04 nice idea! but nah i switched to normal mode its too buggy.

My problem is ubuntu makes my laptop Acer 5920G hot under left palm. CPU temperature is 46C (acpi -V) GPU about 60 (nvidia-settings) HDD 46 (sudo hddtemp /dev/sda). All numbers seems ok and windows alike so why o why it is so hot compared to vista! I want to run MATLAB under linux due to lower memory usage but now I cant work comfortable.

I suspect that under my left palm is HDD how to fix it?

Greetings
Lipin

Alterax
April 24th, 2009, 11:25 AM
Could be a number of things. Applying a couple of laws of physics can give us some answers: It's hot because it's consuming a lot of power. The logical thing to do is to reduce the power consumption (which is nice on the batteries).

First off, I usually add the option noatime to my main partition's entry in /etc/fstab. I really could care less on my laptop when I last accessed a file (as opposed to modifying it), so there's really no need to write to the drive every single time. The noatime flag handles that.

Next, download and install the utility powertop. It's in the standard repo; invoke it from the terminal through sudo powertop. Let it run, and follow its instructions; usually it can make alterations to your power consumption for you. Note it gives a suggestion about every 10-20 seconds, so the first go may take a bit, but the changes are cumulative and they tend to stick.

After that, it should purr like a kitten.

lipin
April 27th, 2009, 09:49 PM
I run couple of test with hdparm -B 1,127,254 -M 128 non of this settings seems to work -B 1 is spinning down my hdd very often but temperature stays almost same like in -B 255 (no management). Temperatures are about 5-9C higher then in Windows Vista.

Greetings

EDIT: I did try powertop too

Here is my HDD info:
hdparm -iI /dev/sda


Model=WDC WD2500BEVS-22UST0 , FwRev=01.01A01, SerialNo= WD-WXCY07064172
Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=50
BuffType=unknown, BuffSize=8192kB, MaxMultSect=16, MultSect=?16?
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=488397168
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6
AdvancedPM=yes: unknown setting WriteCache=enabled
Drive conforms to: Unspecified: ATA/ATAPI-1,2,3,4,5,6,7

* signifies the current active mode


ATA device, with non-removable media
Model Number: WDC WD2500BEVS-22UST0
Serial Number: WD-WXCY07064172
Firmware Revision: 01.01A01
Standards:
Supported: 8 7 6 5
Likely used: 8
Configuration:
Logical max current
cylinders 16383 16383
heads 16 16
sectors/track 63 63
--
CHS current addressable sectors: 16514064
LBA user addressable sectors: 268435455
LBA48 user addressable sectors: 488397168
device size with M = 1024*1024: 238475 MBytes
device size with M = 1000*1000: 250059 MBytes (250 GB)
Capabilities:
LBA, IORDY(can be disabled)
Queue depth: 32
Standby timer values: spec'd by Standard, with device specific minimum
R/W multiple sector transfer: Max = 16 Current = 16
Advanced power management level: 127
Recommended acoustic management value: 128, current value: 128
DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 udma5 *udma6
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=120ns IORDY flow control=120ns
Commands/features:
Enabled Supported:
* SMART feature set
Security Mode feature set
* Power Management feature set
* Write cache
* Look-ahead
* Host Protected Area feature set
* WRITE_BUFFER command
* READ_BUFFER command
* NOP cmd
* DOWNLOAD_MICROCODE
* Advanced Power Management feature set
SET_MAX security extension
* Automatic Acoustic Management feature set
* 48-bit Address feature set
* Device Configuration Overlay feature set
* Mandatory FLUSH_CACHE
* FLUSH_CACHE_EXT
* SMART error logging
* SMART self-test
* General Purpose Logging feature set
* WRITE_{DMA|MULTIPLE}_FUA_EXT
* 64-bit World wide name
* IDLE_IMMEDIATE with UNLOAD
* Segmented DOWNLOAD_MICROCODE
* SATA-I signaling speed (1.5Gb/s)
* Native Command Queueing (NCQ)
* Host-initiated interface power management
* Phy event counters
DMA Setup Auto-Activate optimization
Device-initiated interface power management
* Software settings preservation
* SMART Command Transport (SCT) feature set
* SCT Long Sector Access (AC1)
* SCT LBA Segment Access (AC2)
* SCT Error Recovery Control (AC3)
* SCT Features Control (AC4)
* SCT Data Tables (AC5)
unknown 206[12] (vendor specific)
unknown 206[13] (vendor specific)
Security:
Master password revision code = 65534
supported
not enabled
not locked
frozen
not expired: security count
not supported: enhanced erase
92min for SECURITY ERASE UNIT.
Logical Unit WWN Device Identifier: 50014ee2ab687c9b
NAA : 5
IEEE OUI : 14ee
Unique ID : 2ab687c9b
Checksum: correct