p640hk1 7700hq draining battery ASPM disabled!

I am facing this strange issue with CPU not going lower than 1.3ghz with idle @ only 0-1% cpu load.

the battery drains really quickly with moderate browsing, hardly 150-160 minutes of usage! while advertised 290minutes in UMA mode

powercfg -energy test shows that ASPM is disabled:

PCI Express Active-State Power Management ( ASPM) has been disabled due to a known incompatibility with the hardware in this computer

any hints? @Prema @Meaker@Sager ?

intel chipset drivers are up to date. and all windows 10 updates installed

 

Have you tried a clean install to rule out something weird with the drivers?

 

which drivers? chipset? or NVidia? Intel graphics?

 

ASPM is going to lower the usage of the PCI-E bus but it's not going to impact the machine in a huge way. I think something power wise in windows is set oddly.

 

nothing out of ordinary. also tried all kind of things.

kaby lake should throttle down to 0.8-0.9ghz, right?

@XMG perhaps you can help? I see you sell these too!

 

@tanzmeister

Friendly comment - P640HK1 right (not n640) ?

On battery the CPU should clock down to 800Mhz at idle but even though yours is only dropping to 1.3GHz I don't think that's high enough to cause the short battery life that you see. Should get 4 hours WiFi surfing out of your laptop or 3h 30m out of BluRay playback.

If you just focus on the CPU speed, it could be you simply have something running in the background - I've seen adware and virus' do this.

 

yes, p640hk. my bad!

I have nothing running on the background, besides cpu usage is only 0-1% at that times.

I even disconnected Wi-Fi, re-installed fresh windows, install all drivers from USB - same result!

can you test any of your machines please? I was really expecting to use this one for work!

I am pretty sure I could squeeze some more battery life in case it would throttle down to 0.8. another half of hour definetly

 

Strange.

This is what you should see - http://www.notebookcheck.net/Schenk...7-Clevo-P641HK1-Notebook-Review.207220.0.html . If you see something noticably different then I'd recommend to contact the company you purchased the laptop from.

 

can LG/Philips LCD be more energy saving than AUO one?

180 minutes is the max battery Wi-Fi life I got so far!

which bios version do you use for these?

 

re-installed windows again, updated, drivers - still the same: no throttling down lower than 1.26ghz. also windows processor power schemes seem to do nothing! even when I select max 5% performance for CPU - it still boosts to whatever speed it wants.

so what are your BIOS/EC versions?

 

@tanzmeister - BIOS and EC are both 1.05.05. AFAIK there is no earlier release of the BIOS that was made public, though there is a 1.05.04 EC - don't have access to the changelog from here though unfortunately, I can investigate at work tomorrow if you're not running 1.05.05.

Do you have the MEI driver installed?

Also, might sound silly but do you have an external display plugged in?

The panel won't make a difference, for anyone who is interested here's why in a little more detail:

The power consumption of each panel, according to the manufacturer is:

LG: 4.6W (typical)
AUO 5.4W (max)

Idle minimum power consumption of the P407 is 10W (this is what it's pulling from the wall through the PSU, not what it is pulling from the battery on battery "mode"). If the system uses 10W with 4.6W from the LG, the AUO could increases the system idle power consumption by 8% - the moment you start drawing more than 10W then the difference that the panel makes to the battery life drcreases rapidly.

 

I think I found the problem for battery draining!

I was using an old Delta charger from gt70, now switched to the original one and got about 40 minutes of Wi-Fi work up!

still CPU does not throttle down lower than 1.26 on all cores, one of the cores can reach 1ghz though.

no, no external display.

 

It might be worth a reflash of the BIOS/EC.

 

does not help, thanks.

the silliest thing is that when I take ssd Windows out and put it inside p671hs-g - same thing starts to happen, CPU gets stuck at 1.2-1.3ghz. but otherwise p671hs-g throttles to 0.8ghz

same with OS taken from p671hs-g and installed to p640hk1 - no throttling down to the bottom.

@XMG perhaps you can test one of your units for me? will it throttle to 0.8 at idle at your side?

 

I have asked our testing team to have a look into this, not 100% sure when they'll be able to get back to me as there's a bit of a rush on at the moment before the Easter holiday period. I'll update on this thread when I hear back from them ;-)

 

@tanzmeister try using Throttlestop and activate the SpeedShift feature and tell me if your CPU then goes down to 0.8-0.9Ghz

 

Also activate the "power saving" feature as well.

 

isn't that obsolete with SpeedShift, cause EPP is used in that case?

 

I'm not sure but it can't hurt, right? It should at least be worth looking into.

 

it does not unfortunately.

funny thing is that when I force 0.8ghz through max speedshift - throttlestop shows more Watt consumption of the package,

 

tried that

 

What Windows version? I assume Windoze OS X, but is it RS1 or RS2? Have you confirmed the power profile CPU minimum power state is 5% on battery? Perhaps Windows Maintenance is running too frequently? You can disable that and see if it helps.

If you are using Clevo Control Center perhaps that is screwing things up. Certainly would not be a first time for that, LOL?

Have you tried uninstalling Clevo Control Center?

 

A fresh OS install is worth a try if you can with a monitoring app to see if something causes the change as you install drivers.

 

Yup, I agree... I think the OS installation is screwed!

Sent from my LG-H850 using Tapatalk

 

oh, what have I tried... useless! everything I could ever think of! fresh install, latest win X from iso, updates, services disabling, drivers installing/uninstalling. no luck

tried that too many times

tried many times, different builds. same ISOs work perfectly in this sense on other Clevo 7700hq laptops.

 

@tanzmeister - Did you ever contact your reseller? It might be worth it to have them inspect the battery and the board - maybe even replace the board, if nothing else (if they're willing, after inspection).

 

I have RMA'd the machine and the problem is gone, haha strong 0.8ghz at idle now

 

Clearly an RMA solves everything. Though it would've been interesting to see exactly what was the issue—possibly a faulty resistor on the motherboard, or somesuch...

 

Good to hear it's been resolved.

Indeed - @tanzmeister - what did the RMA report say regarding the repair/resolution?

 

I did not ask actually, to be more correct I have RMA'd the board, not the whole barebone.

but now I am wondering that all what might have been needed is a EC power drain reset?