DV1000 fan issue

hi guys,

im having a problem here with my gf's dv1000. is it normal for the fan to turn on and off when you have set the power management to minimal power or the save battery mode.

A typical scenario would be when im surfing the net and doing some work with some word files. With a cpu speed and temp program someone recommended here on the forum, the speed is throttled to 600mhz and temp is hovering around 52 celcius. say i want to open another windows explorer or internet explorer windows, the processor would jump to 1.7gig accompanied by the fan turning off and shutting off within a few seconds. when this happens its quite annoying as the proccessor is being taxed to the max to warrant the fan turning on.

note that processor usage is minimum say always below 10% or always near idle as im just surfing and stuff. hard disk temp is usually sitting at 40 celcius.

I have used a number of laptops and recently an asus with the centrino 1.8 and the fan never comes on unless intense gaming is done on it or full processor usage is done. Same with the older laptops.

its just that the whirring of the fan on and off on and off is getting on my nerves. ive read the articles on the L2000 and stuff but they seem to attribute taht to the hard disk on that machine.

spoke to a hp rep and he told me thats the way the machine and proccessor functions which i do understand but i donot think that the fan should decide to turn on and off repeatedly when the proccessor makes a momentary spike from 600mhz to 1.7 gig (for a few seconds) and back to 600mhz where it stays most of the time. If i leave the laptop of desktop mode where the procssor is maintained at 1.7gig....the cycling continues all the way and that's even more annoying.

Anybody experiencing the same thing?

 

Which processor do you have in the laptop - celeron or pentium m? For a short time I had the celeron dv1000 and I really didn't like it at all. It seemed slow and sucked the battery like a vampire. It also seemed to run pretty hot. I bought the v2000z instead and haven't noticed excessive fan noise, but the proc does spike every time you open something - that's just how it works. When you use the processor, even just briefly, it spikes up to full voltage. Now, whether it should always turn the fan on is another question. Maybe I'm just not as sensitive to the noise as you are.

There might be an app out there that will idle down the fan, but if there is I would be very careful about using it. You don't want to burn out the proc.

 

I don't have much in advice to offer, but ****, 52c for app usage? That seems awfully high. I have an AMD64 that often runs about 25-27c when surfing, etc. When I do tasks I may reach 30. Am I just lucky or is there an issue w/ your temperature program?

[EDIT] Although I've managed to reach 48c when playing Half-Life 2 or Counterstrike:Source but quickly cools down to the high 20s again as normal.

 

its the pentium m
1.7gig

yes....52-54 celcius while iddling......like when i leave a windows explorer on...thats all......once i open an ap....the processor jumps to 1.7gig and temperature jumps to 55 like that and the fan comes on and last 1 or two seconds and go back down.
in a quiet room it becomes quite annoying. esp when i leave it on whole night to download something and go to sleep....the whirring of the fan goes on and off....

the temp program im using is mobilemetre

 

Hi,

I've dv1000. I understand the issue you are talking about.
It annoys me too.

As a workaround, I've installed RightMark Clock utility.
It allows you to:
1) Undervolt the cpu
2) Make the processor run in power management mode
where the spikes to max Mhz are less frequent (hence
reduced fan cycling).

Once you have rightmark Clock utility installed,
let me know. I can tell you the settings I've.

CPU temp still stays near 48-50 degC. But fan cycling
is reduced.

Imran

 

I’m thoroughly convinced the V2000 / DV1000 / L2000 notebook platforms were designed to run in the 48-52 Celsius range. I’ve tested numerous units with both AMD and Intel processors and they all run in this range.

Either it’s because of some cost savings issue or the smaller case cannot accommodate a more efficient heatsink to dissipate heat.

 

I will give it a go what are your settings?
Thanks

 

Hi,

Try this:

Click on Management Tab.
Click on "Use P-State Transitions (PST).

It shows just one state by default.
Click On "Add", Select the maximum
"Bus Clock Multiplier". In my case it's
13.0x (133x13 = 1.7Ghz).

Now that you have P-State 0 with minimal
multiplier (6.0x) and max, you can undervolt if
you wish. To undervolt, just click on the P-State,
then click on Modify button. Change the request
voltage level number from cyclic field. Note that
you can only change state-0 and last state voltage.
The intermediate states are automatically adjusted.

The developer of this tool "Dmiti" suggests many
states.

I've 0.908v at 6.0x and 1.212v at 13.0x.

Add more states, like 8, 10, 12 etc.

I've these states:

6.0x 0.908v
8.0x 0.988v
10.0x 1.084v
12.0x 1.164v
13.0x 1.212v

Now the setting which will help with fan cycling is down
under "Performance/Power Profiles & Management Mode".

Make sure it's Power Saving Level 4 for both AC
or Batt. You can experiment with different levels to
get to the optimal setting.

That's all. Hope it helps.

Imran

 

Thanks Imran,
I will play around with the settings you are using.
I appreciate it.

 

That thing does get hot. My g/f handed hers over to me to look at something yesterday and after about 2 minutes my arms started to sweat it was so warm compared to what I'm used to! I downloaded SpeedFan and she was running about 54c after doing tasks. I was amazed.

 

nice Imran. will check it out. Does this undervolting thing intefere with the warranty stuff?

 

Good question!
I am not sure. I think undervolting is safer than
over-clocking...So far (1 month of useage), I've
not found any negative side affect of undervolting.

For me, it was the difference that made me keep
dv1000.

Imran

 

Another good program to try is
centrino hardware control. It's available from

http://www.pbus-167.com/chc.htm

You can define different speed/voltages along
with other settings.

Worth a try if heat/fan bothers you.

Imran

 

Great program Imran, a little bit easier to use. Thanks again.

 

Yes, I like CHC better.

Believe it or not, I've these settings with no problem so far:

6x - 0.716v
8x - 0.812v
9x - 0.860
10x-0.924v
11x-0.972v
12x-1.020v
13x-1.068v

THe fan control and harddisk quiet/perf. settings were
grayed out.

So far so good. dv1000 is running cool n quiet.

Imran

 

@irman, will the settings 6x - 0.716 work with dv4000 series? that's good settings if it will work, i hope no problems will occur

 

When you set voltage in centrino hardware control
program, it runs cpu at 100% for 30 seconds for
stability. You can also run a longer check (15 mins).

I'd just try it out. I've been these settings for last couple of
days with no issues at all. Longer term, who knows!

Imran