CPU Power Management Setting in BIOS

Hi paa55112
If I am not wrong, none other than reduced battery life.
For SSD, you could try PerfectDisk and use SSD Optimize to improve 4K read / write performance
More information about SSD Optimize
http://www.raxco.com/ssd-optimization.aspx
http://blog.raxco.com/2011/11/16/how-to-optimize-your-ssd-without-wearing-out-its-lifespan/
http://forums.whirlpool.net.au/archive/1725746
Have a nice day!
Peter
W520 (4284-A99)
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Similar Messages

T60p - Chirping noise with CPU power management

I've bought a T60p which produces a chirping noise when running on battery. The high frequency noise is disturbing when working with the device, especially in silent surroundings.
I've already contacted the Lenovo Support and they advised me to turn off CPU power management in the BIOS which indeed removes the noise. However, the cost is a significantly reduced battery time.
First the Lenovo guys offered me a high capacity battery to compensate the shorter run time but then they refused and stated that my computer "works as designed" and that "Lenovo doesn't accept warranty".
I can't believe that this is true. IBM and the ThinkPads have been recognized for their excellent quality and customer service for many years. That's why I bought a TP despite it was way more expensive than other Notebooks. Is Lenovo really not interested in keeping the excellent reputation that IBM formerly had? I'd be very interested in a statement of a Lenovo official on this issue...

> every CD/C2D processor makes this noise regardless of notebook manufacturer.
Nope, not every. There are C2D ThinkPads and other manufacturer notebooks without this defect. Sometimes noise level is higher, sometimes lower, sometimes completely silent if you are lucky enough...
amaso, I have the same problem on my brand new T60p, and found a better solution. Try to download RMClock and disable PopUp mode in CPU advanced settings. This eliminated the noise for me and power management still is working.

Efficiency of CPU Power Management (T510)

Hello and sorry in advance for my average english,
i bought a ThinkPad T510 and I had the same problem like many others.
A whitsling noise appeared when I disconnected the charger.
As read on many websites, I deactivated "CPU Power Management" in the BIOS.
And actually the noise disappeared.
Now i've got the question, if there's a big difference between the settings "Automatic" and "Disabled".
How fast gets the battery empty?
I want to decide, if I endure the annoying noise (if the difference is big) or not.
Thanks in advance,
eXtense

Hi
Changing the CPU Power Management does not make the much difference in battery backup.
However, I will advice you to update the BIOS of the notebook which will keep the system working fine.
Best Regards,
Tanuj
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What does 'CPU Power Management' BIOS setting do?

On many threads people (and Lenovo tech support) have recommended disabling 'CPU Power Management' in BIOS as a workaround for the common high-pitched noise problem. I assume this negatively affect battery life, but am wondering if anyone knows what exactly the option does and by how much disabling it hurts battery life.
Thanks,
Josh

Does it prevent all CPU state changes or only certain ones (e.g., C3/C4)? And does it have any other affect? I ask because Lenovo tech suport disabled it to combat a whining noise and I'd like to understand the implications. Also, if it just is altering CPU state changes, I think that can be accomplished in software.
Thanks

Disabling "CPU Power Management" through BIOS -- any bad consequences?

Ok, so my new T440S is emitting a most annoying high-pitched noise. After doing some research, I come to the conclusion that it is the so called CPU Whine.
According to the diagnostics provided on this page:
http://forums.lenovo.com/t5/T400-T500-and-newer-T-series/T510-T410-W510-ThinkPad-high-pitched-whine/...
Disabling CPU Power Management may silence the noise - as a diagnotic measure, not a solution (as the post asks the user to contact Lenovo support for assistance).
So I tried that and indeed it silences the annoying whine. I have already contacted Lenovo and they said they will get back to me after Christmas. Meanwhille, I am still using this computer, and I am keeping the setting for CPU Power Management Disabled, until Lenovo solves the noise problem.
I was wondering if this (keeping the CPU Power Management disabled) may have some bad consequences - like melting some parts down or something. Would anyone know?
Thanks!

Hi yinslaptop!
I have good news. I have the same problem. My T440s is completely quiet at 43 °C CPU so I don't need any fans to spin. However there is a slight buzz coming out of the middle of the laptop. And it isn't coming from the speakers nor the fan. I didn't bother to open it up yet and check what is causing that noise, but I guess it's related to some coil whine or voltage leakage. As in your case, when I turn off the CPU Power Management option in the BIOS, the sound dissapears completely.
HOWEVER I conicidentally put one SD Card Adapter into the Card Slot and the sound completely dissapeared. I would say give it a try. Sadly the sound comes back in 20 seconds at my machine, but I am using a Sd card adapter with no card in there. Maybe this will change when I put one in. Have to test, because I don't have one lying around.
Lenovo has done a great job. You could to better at this price range, especially when the pc market is shrinking .. it's survival of the fittest. You will see what I mean when you won't get foothold in US and Europe anymore and only will supply Asia.
You won't probably answer this thread and when you do "awww yes, we are deeply sorry, some level buzz is completely normal" CTRL+V bull**bleep**.
Don't get me wrong. I really like the new T440s as my first ThinkPad, but my high order of quality wasn't meet. However I still bought it, because I needed one laptop with really good battery life, good screen and small footprint. Well sorry for the rant.

W520 freeze caused by "CPU power managment in BIOS"

I have been running my Thinkpad W520 seemlessly for the past 4 years.
It started to freeze last monday on win7. Freezes increased rapidly and then occured at logon.
I was able to run win7 in safe mode.
Unable to reinstall win7 or even ubuntu.
Unplugged all peripheral without any succes, then disabled everything in the BIOS (1.41) and it worked again.
It looks like the "CPU power management" causes the freezes. with it disabled, everything is running back.

Hi paa55112
If I am not wrong, none other than reduced battery life.
For SSD, you could try PerfectDisk and use SSD Optimize to improve 4K read / write performance
More information about SSD Optimize
http://www.raxco.com/ssd-optimization.aspx
http://blog.raxco.com/2011/11/16/how-to-optimize-your-ssd-without-wearing-out-its-lifespan/
http://forums.whirlpool.net.au/archive/1725746
Have a nice day!
Peter
W520 (4284-A99)
Does someone’s post help you? Give them kudos as a reward, as they will do better to improve | Mark it as solved if the solution works for you, so it could be reference for others in the future
=====================================
Sound Enthusiast and Enhancement (Post comments, share mixes, etc.)
http://forums.lenovo.com/t5/General-Discussion/Dolby-Home-Theater-v4-for-most-Lenovo-Laptops/td-p/62...

Satellite X200 - No power management tab in BIOS

I have a Satellite X200 and I'm trying to access the power management tab in BIOS, however no such tab exists. The reason being is that I'm trying to set up an automatic start up time. If it is any help, the BIOS is Phoenix TrustedCore V.2.10
So I'm wondering where it is, or how to access the power management
Thank you in advance
Message was edited by: plainer

Hello
Why you need an automatic start up time?
Sorry but such a function is not available. I never had a notebook that was able to set such automatic start up time.

Power Manager Setting To Preserve Battery Life When Using A Docking Station

I have a Lenovo Thinkpad X220 which is about 19 months old. When at work, the computer is in a Lenovo docking station. At the end of the day, it is removed and any further evening use is typically on the battery.
Yesterday, the battery symbol in the tray at the bottom of the screen displayed a red X on it and indicated that there was an "error". I presume from this that that battery is dead and needs to be replaced. I am surprised by the comparatively short life of this battery.
I was thinking that perhaps the use of the powered docking station played some role in shortening the battery's life. For example, it may have repeatedly overcharged the battery.
Is there a Power Manager setting that will reduce the likelihood that the battery is being overcharged while in the docking station? In the future, is it feasible to simply remove the battery before inserting it into the docking station so that this won't continue to occur?
Thank you.
(I did a search of the community's knowledgebase, but didn't find anything on point.)

Hi,
Welcome to Lenovo Community Forums!
I’m sorry to hear that battery of your Lenovo ThinkPad X220 had undergone wear and tear and has to be replaced.
Capacity of a battery declines as the battery ages, with the number of charge cycles and time at high temperature. Under average usage patterns your battery maintains approximately 70% of its power capacity after the first year of operation.
Most laptops today use lithium Ion (Li-ion) batteries. Overcharging Li-ion batteries is not a problem and does not affect the battery life span. These batteries have an internal circuit to stop the charging process at full charge. This is why the Li-ion batteries are more expensive. The only way for the Li-ion battery to overcharge is if the charging system malfunctions, and then the battery will heat up while in the charger. Older laptops use Nickel-cadmium (Ni-Cd) and Nickel Metal Hydride (Ni-MH) batteries. They require more maintenance than Lithium Ion batteries. They must be fully discharged and then fully recharged so that they don't lose battery life.
Refer this document to see the tips on how to increase the battery life.
Hope this provided enough clarity for your query!
Best regards,
Mithun.
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If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! This will help the rest of the Community with similar issues identify the verified solution and benefit from it.
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Modifing the power management setting

Hi, I'm not able to make changes in the power management prefpane in this sense: I adjust the 2 cursors (it's a macmini with osx 10.6.4) and quit system preferences; but if I reopen the prefpane the setting appears unchanged.
I've looked for .plist to trash but I don't know what file to trash.
Any help? Thanks.

Try the /Library/Preferences/SystemConfiguration/com.apple.powermanagement.plist.

HP Power Manager & Set Up Manager Blocked Windows 10

After the recent upgrade to windows 10 , I can no longer access HP PowerManager, or HP setup mamager. The message is 'This app has been blocked for your protection' An administrator has blocked you from using this app...Publisher not trusted. I am the only user, I am the administrator I am six secnds away from unistalling Windows 10. Any insight would be appreciated.

Graphics driver and power manager search successful. I went to HP support site itself, key in my model of HP notebook, which is HP Pavilion m6 Entertainment Notebook PC. 1. Then I just look for a list of software I need, select ones I need; that is AMD Catalyst Control Center for Radeon HD 7670M, high definition switchable graphics. Downloaded it and installed. The screen goes black, intermittenly a few times and then when the installation in the back ground is finished, the computer works beautifully with good graphics on the notebook screen as well as my extended extra big screen. Nice experience. By the way it looks like all the m6 uses the compatible drivers, even though the other number may be slightly different like m6-1035tx, m6-1000tx, m6-1009tx . Here is the site I went with my specific modelhttp://h10025.www1.hp.com/ewfrf/wc/product?product=5283110&cc=us&dlc=en&lc=en&query=B9J98PA#ABG&tool...Go in there and change the model in the search. 2. To look for Power Manager software, put "power manager' in Search.HP Power Manager for Win 7 32 or 64, reinstall well in the Win 8 environment. Win 8 accepts lower versions and works well. Do this only if your system prompt you to reinstall. All the best.

Power manager setting for battery on AC

Hello,
99% of the time I keep my T61 14" plugged into the wall and was wondering what the recommended battery settings would be in Power manager? I guess this mainly refers to the charge thresholds. Currently I just have the checkbox selected that says "optimize for battery life".
Thanks for any suggestions.
-Paul
T400 6475-8Q5 | 8GB RAM | WXGA+ | Seagate 500GB 7200 | Win 7 Pro 64-bit............T61 7658-CTR | 8GB RAM | WD Black 320GB

If you want to maximize battery life it's best to remove the battery at around 40% charge and store it separately in a cool, dry location. Check it every few months and recharge it as necessary. If you leave the battery inside your ThinkPad, even with optimized recharge settings, the heat from the system will reduce battery life.
See Battery University.
Cheers... Dorian Hausman
X1C2, TPT2, T430s, SL500, X61s, T60p, A21p, 770, 760ED... 5160, 5150... S360/30

Macbook Late 2011 freezing, problem with CPU power management.

Hi everyone.
I have Macbook Pro 15 Late 2011. And i have a problem with it.
When laptop is cold, sometimes, it can freeze. Other then this there's no problems with it, no problems at all.
I solved this problem by deleting AppleIntelCPUPowerManagement.kext, so for now it's getting a little hotter (not very).
And my question: is there any utility or app, which could let me see what AppleIntelCPUPowerManagement.kext is doing with system, so i could see what causing freezes. I don't have apple services in my country, so i can't bring this laptop to repair.
And if you don't know answer to this question, but know forum, where i might find answers, please write it.
Thanks in advance.
Sorry for language, i'm not an english speaking.

Catfish, if you're on AC power, and you don't run with a fully charged battery in the machine, then it won't run at full performance. Plus, if the battery is worn out, then it won't charge to nearly its original full capacity, and thus the machine won't run at full performance on AC power.
Note that, if you leave the battery in a drawer for months without using it, that can kill the battery.
Good luck!

T400 Penryn CPU Power States?

I i have a P8400 CPU in my T400 Vista 64 and CPUZ only reports two power states no matter whether on battery or AC. One is max 2,3ghz the other is 1,6ghz.
I have powermanager and vista set to "Optimize power plan" and have also tried to set the max frequency at 5% to test, yet the CPU does not go below 1,6ghz.
My old Core Duo had more power states, the lowest being 700 or 800 mhz.
Did i miss something to activate the C4 / Deep Sleep settings? I tried changing the bios settings with no avail.
Also do features like switching off one core when it is not needed etc (introduced in santa rosa) work without any setup or do i have to activate that somehow as well?
I would appreciate if someone could check whether their CPUs go into Deep Sleep or also have only 2 visible power states.
Thinkpad T400 (Windows 7 Ultimate x64)

Hi
Welcome to the community.
As per your concern low CPU frequency occurs after wake up from the hibernate or sleep mode So to recover from this concerned issue,I would suggest you to please update the Power Manager software and Bios of your system from the below mentioned web link.
http://support.lenovo.com/en_US/downloads/default.page?
Also choose the battery in the balanced mode.
After this, please restart the notebook and check if the issue resolved.
Regarding
Sameer
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Power Manager resets Display Brightness (T 410)

Has anyone experienced an issues with power manager where the following occurs? I have power manager set so on battery my display brightness is 10 and on AC the brightness is 15. If I restart Windows 7 and am on battery power, the AC setting resets to 10 and must be manually reset once I plug in the power cord. I am running windows 7 64 (not the Lenovo build) but have used system update and am currently up to date with no problems listed in device manager. Any ideas.
Thanks.

Hello mate,
Is the setting the same in both Power Manager and Windows Power Options ?
Knowledge is of two kinds. We know a subject ourselves, or we know where we can find information on it.
ThinkPad T510 4313-CTO Windows 8 x64 - Intel Core i7-620M - NVIDIA NVS 3100M - 8GB RAM - 240GB SSD- Intel Centrino Ultimate-N 6300 - Gobi 2000.
ThinkPad Helix 3697-CTO Windows 8.1 x64 - Intel Core i7-3667U - Intel HD Graphics 4000 - 8GB RAM- 256GB SSD - Intel Centrino Advanced-N 6205 - Ericsson C5621gw

My solution (or so I thought) to Power Manager/CPU throttling problems!!!

I have found a solution to all my Power Manager/CPU throttling problems!!! Though there is some good and bad news.
{EDIT: The problem has NOT been fixed, even after latest PowerManager (3.62) and BIOS (1.30) versions. Pretty much ignore anything I say below as the problem is still occurring. You can see my full post here: http://forum.lenovo.com/t5/W-Series-ThinkPad-Laptops/W520-Speedstep-not-working-properly-on-battery-...}
Good news: I have NONE of the throttling issues or inconsistent CPU frequency problems I was having before on AC or battery power. Everything, including TurboBoost on battery works! It is completely fixed! (I have no idea how this factors into Lenovo’s statements that TurboBoost is disabled on battery “by design”. There is at least one other post from someone else that also reported TurboBoost was working for them on battery)
Bad news: I don’t really know which one of the many things I tried actually worked. I am sorry I wasn’t more methodical about recording what I did and checking results, but this was my last ditch effort to get this fixed on my own without sending the system in for repair and frankly, I didn’t think it would work. Now that it has worked, I’m hoping my steps can help others.
For anyone interested, here’s what I did… and before anyone says something like “That has nothing to do with managing power/cpu, why would that help?!… etc., please keep in mind I’m just stating exactly what I did. I am aware some of the steps may not be relevant, but who knows… We all know how weird PC’s are sometimes, even the smallest, oddest thing may resolve a problem.So anyway, here goes.
**IMPORTANT** Not sure how many noticed, but there was a new version of Power Manager released a few weeks ago, 3.62. The PM driver seems to have stayed the same. That alone could very well be the sole fix, I’m not sure. You may just want to completely remove PM and PM driver and install the latest version before trying any of the steps below.
1)Made a complete system image via Windows built-in backup feature
2)Disable any 3rd party fan/CPU control utilities (Throttlestop, etc). Make sure they are also not going to run at startup or from a scheduled task
3)Remove Power Manager Driver, then remove Power Manager software
4)Reboot to Windows
5)Remove all traces of the Power Manager drivers/software directories (think it was something like C:\readyapps and C:\drivers.) **For some odd reason after I did this, my wireless stopped working but it resolved itself by the time I was done with these steps, strange
6)Reboot
7)Access BIOS and reset all settings to default
8)Boot into Windows, downgrade to BIOS 1.25 [UEFI: 1.25 - 8BET44WW / ECP: 1.14 8AHT32WW ] via the Windows flash utility. I wanted to downgrade all the way back to 1.06, but the software would throw up some error for any version prior to 1.25 and wouldn’t proceed
9)Reboot to Windows; make sure system booted w/ out issues
10)Reboot again, access BIOS, reset to defaults again
11)Shut down system
12)Disconnect AC power. Remove main battery. Access and disconnect system backup (a.k.a CMOS) battery under keyboard. Discharge residual power in the system (there are various ways to do this, but you could just leave the battery disconnected for a few minutes). Visually inspect the system for anything funky…my system had a slightly but noticeably loose CPU/GPU heat sink/fan assembly power connector.
13)Reconnect backup battery.
14)Reconnect AC power but leave main battery disconnected.
15)Power on. Should get a message indicating “checksum error, system time reset” or something like that.
16)Reboot to Windows. Verified still okay.
17)Downloaded latest BIOS version, 1.26. This time I burned the bootable BIOS flash CD instead of running it through Windows.
18)Restart and boot from disc, flash BIOS to 1.26. Once complete, restart. Verify BIOS set to defaults.
19)Boot back into Windows.
20)Install latest Power Manager driver (1.62 ), reboot if/as prompted. Install Power Manager (3.62), reboot as prompted.
21)Boot into Windows, verified Power Manager was active and working. Verified TurboBoost was working. Restarted system a few times and played around with Power Manager for a bit to see if the different power plans worked and retained the settings, all the while monitoring the Intel TurboBoost utility and PM’s own “power gauges”. Let system Sleep, changed power sources, resumed, etc. Everything was working great.
22)Shutdown, reconnect main battery. Booted into Windows. Again, fiddled with Power Manager for a bit, switching between power plans and AC/battery power. Still worked great.
23)Success!
That’s it. Again, this is not a guaranteed fix guide. These are just simply the steps that I took on my system that resolved the problems many of us are having. Hopefully it will work for others.
T520 4239-CTO | i5 2410M
W520 4270-CTO | 2720QM | 16GB RAM | Quadro 1000M | BIOS 1.30 | PwrMgr 3.62

All I basically did was download and install...
(Chipset driver) http://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles/oss924ww.exe
(PM driver) http://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles/83ku14ww.exe
Now, I did chipset first (didnt ask to reboot) then installed the PM driver (did ask to reboot)
I rebooted.... then I went into bios (1.26) and set everything to default... then restarted saving changes...
Since I prefer not using optimus I changed the display settings in bios right after saving the default settings...
Not sure whether or not you really had to go into bios... but everything seems to be working...
My settings in PM is set to Maximum Power in the Advanced tab, 3rd party monitoring tools is TPFanControl and HWInfo64....
W520 (4270 CTO) | i7-2820QM | 16GB RAM 1333 MHz | Runcore MSATA SSD | 2x Kingston SATA2 SSD | Quadro 2000M | FHD | Windows 7

CPU Power Management Setting in BIOS

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