Latitude E6400 Owner's Lounge

Undervolting means increase error rates, which means unstable system which can even lead to corrupt some data (corrupt a document you save for example). I don't recommend it at all!

 

Undervolting does no harm when done properly. That is why it is recommended to do overnight stress tests to make sure it is stable.

Cooler and better battery life, it takes quite a bit of time to do, but if you follow the undervolting guide, you won't have any problems.

I am not undervolting yet, because my P8400 has a half multiplier, which RMclock does not recognize. I would get underclocked to 2.1ghz or so, until RMclock is updated to recognize the processor properly. The P8600 does not have this problem.

Greg

 

John, do you still have that long delay during POST occasionally?

I noticed this long delay also when TPM is activated, but never had the delay no matter how I try when it is deactivated.

It could be one of the recent BIOS updates. How do we report this to Dell?

 

Can someone intepret the following settings for my HDD for me and tell me if there is anything to improve on?

C:\Program Files\hdparm\bin>hdparm -I hda

hda:

ATA device, with non-removable media
Model Number: ST9160411ASG
Serial Number: ----------------
Firmware Revision: DE13
Transport: Serial
Standards:
Used: unknown (minor revision code 0x0029)
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: 312581808
device size with M = 1024*1024: 152627 MBytes
device size with M = 1000*1000: 160041 MBytes (160 GB)
Capabilities:
LBA, IORDY(can be disabled)
Queue depth: 32
Standby timer values: spec'd by Standard, no device specific minimum
R/W multiple sector transfer: Max = 16 Current = 16
Advanced power management level: unknown setting (0x0000)
Recommended acoustic management value: 208, current value: 254
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
* 64-bit World wide name
* IDLE_IMMEDIATE with UNLOAD
* Write-Read-Verify feature set
* WRITE_UNCORRECTABLE command
* {READ,WRITE}_DMA_EXT_GPL commands
* Segmented DOWNLOAD_MICROCODE
* unknown 119[5]
* SATA-I signaling speed (1.5Gb/s)
* SATA-II signaling speed (3.0Gb/s)
* Native Command Queueing (NCQ)
* Host-initiated interface power management
* Phy event counters
* 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]
Security:
Master password revision code = 65534
supported
not enabled
not locked
frozen
not expired: security count
supported: enhanced erase
40min for SECURITY ERASE UNIT. 40min for ENHANCED SECURITY ERASE UNIT.
Checksum: correct

 

It's not happened for the past couple of weeks. At the moment my security only goes as far as the BIOS-level password.

If you have still got a problem and are running the A06 BIOS then I think you will need to phone Dell technical support.

John

 

Hi Guys,
No intention to hijack this thread but there's not much discussion over at the E6500 Owners' Lounge.

I've noted the following with my E6500. Anybody with E6400 have this problem?
And if it's with an E6500, best to report it on the E6500 lounge:
forum.notebookreview.com/newreply.php?do=newreply&p=4125607

With the machine turned OFF or Hibernated and with no power adapter attached (but battery still in place):
Picking up the E6500 off the table and moving it around causes the blue POWER LED to blink!

Wonder if it's a feature or a bug but always makes me wonder if the machine is truly OFF!

 

i haven't noticed that yet with my e6500, but i will be sure to check the next time it is off (it is very rare that I ever bother to turn this thing off -- suspend/sleep ftw.)

 

Well guys, I've been lurking here for quite a while now, finally decided to register. I was looking for an E6400 for a while, looked online and I found one offered on ebay

cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MESELX:IT&item=140280059065

It's a little awkward I know, but it might save you some money. I bought one from the same seller and mine arrived exactly as stated in the ad. It was brand new, and I had no problems getting the warranty transferred.

Just thought you guys might like to know!

 

Your choice, but I've happily been undervolting for the past 4 years using an overnight stress test and then the voltage a couple of steps higher as a further margin.

I've not noticed this on my E6400 and I use hibernation all the time so there's been plenty of opportunity to see a flashing light. I would classify your flashing light as a bug.

John

 

so a new issue has cropped up -- it happened once and i ignored it, but my GPU is sometimes, after a little bit of playing world of warcraft all of a sudden thinking it is at 102 C and downclocking itself to minimum level. Given the performance just prior to, and the physical temperature feel of the laptop, it seems like a faulty sensor. Anyone have any ideas? It has now happened three times. I might add that once it thinks it overheats (it ALWAYS goes to exactly 102 C), no amount of just sitting in idle cools it down, but a restart makes it read at 59-60 C...