Lenovo G770 Fan not spinning up after resume from sleep or hibernate

Hi guys,
My lenovo G770 is facing an issue where when ever I resume the system from either sleep mode or hibernate, the fan does not spin up, as a result I have to either restart the system or open the system, pull the wire of the fan and put it back in the power socket.
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Solved!
Go to Solution.

Hey Abdul,
Welcome back. If the fan runs normally on first boot until you suspend / resume, then I might imagine this is power management quirk, or something confused in the embedded controller.
1) Try going into BIOS and reload defaults - this might refresh values there.
2) Try uninstall / reinstall power management driver and the energy cut software (Idea power manager).
Did you recently update BIOS or drivers?
I would also try some temp monitoring software just to see how CPU temps run after you come back from sleep to see if the fan should be running.
Mark
ThinkPads: S30, T43, X60t, X1, W700ds, IdeaPad Y710, IdeaCentre: A300, IdeaPad K1
Mark Hopkins
Program Manager, Lenovo Social Media (Services)
twitter @lenovoforums
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Thanks, Anton

I had a similar issue, as soon as a described even a little bit of it to warrenty support they sent someone to swap the board
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Satellite Pro A200GE-1F9 cannot resume from Sleep or Hibernate with SP1

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Laptop Details: [My Laptop|http://uk.computers.toshiba-europe.com/cgi-bin/ToshibaCSG/jsp/SUPPORTSECTION/discontinuedProductPage.do?service=UK&BV_UseBVCook ie=yes&PRODUCT_ID=131911]
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I presume this happens due to a compatibility issue between some drivers and SP1
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X120E Touchpad inoperable after resuming from sleep

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T440S OSD Brightness control failure after resume from Sleep

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I have owned a T440S since late 2013.
Relevant Details:
T440S
Model : 20AQCTO1WW
OS : Windows 7 professional (original installation by Lenovo)
Latest Drivers installed as of June 2014 - including HotKey and Power Management
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When is Lenovo going to FINALLY FIX IT ONCE AND FOR ALL?
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Solved!
Go to Solution.

Try this hotfix:
https://support.microsoft.com/kb/2752407
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Mac Os X Lion Crashes after resuming from Sleep

Hi Everybody, i'm experiencing an issue on my 13'' MBP Early 2011 (i5 processor, 4GB RAM, 750GB HD SATA). My MBP often got stuc after i resume from my monitor sleep. I'll explain it in a better way: After i resume from sleep, there's at first a black screen in which the mouse can move, after that the mouse becmes the classic loading wheel and it freezes copletely, remaining in this situation. I thought it was a screensaver compatibility issue, but the problem stand still after i uninstalled screensaver and deactivate the screensaver options. I think it's a problem with Lion with the HD, but i have no evidence of it. Can Anyone help?
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Whenever someone comes to me with crashing and freezing on waking up I look at 3 things and typically in this order:
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That's awkward. It may not be the Mac itself making it unstable, but yet programs on it making it unstable (lazy developers maybe). Although do remember that OS X Lion is fairly new, and a few bugs are still being ironed out.
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Airport no longer works after resuming from sleep

I got a new MacIntel a month or so ago, and it has always done this, under 10.4.4 and now 10.5.5
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Since airport is the only way I connect to the network, and I don't want to waste electricity, this is unacceptable and clearly a flaw.
I called tech support and they had me move airport to the top of the list, delete plists and other stuff, none of which made any difference. I'm thinking this is a low level system software fault, and I hope I don't have to take it back for a motherboard replacement.

I also have this problem, although, not very often.
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Thats interesting actually because I Never had any trouble on my G5 iMac of otherwise identical specification, on on intel. Hmm. I was thinking this was an intel issue.
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Sound not staying muted when resuming from Sleep mode

The subject says it all. When I resume from Sleep mode the sound is not staying muted. I have found a third party app to get around this but I would rather solve it without having to run something else in startup.
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Anyone know how to prevent this from happening?

youngunix wrote:
cfr wrote:
What does "every OS" include? Just thinking if it includes something like Windows, say, that would point to something rather different than if the problem only manifests in Linux.
Have you seen if the problem occurs if you use the nouveau drivers?
I'm sorry dude, but there is something wrong with you!! In every thread, you just ask or make lame @$$ statements.
cfr is a regular presence around here and helps quite a lot of people. He was trying to get clarification so that your problem could be further debugged. You may think that his statements are "lame ass" but you attitude is "asshole". Don't come here looking for help and then tell those trying to help you that their help sucks. If that is how you show your appreciation for support, you should go elsewhere.

Password not required immediately after wake from sleep

Every once in a while when my retina macbook pro wakes from sleep I do no need to enter my password immediately. Instead it just starts with no password required and then 5-10 seconds later it takes me to the lock screen and asks for my password. Other times it will ask for my password, start up after its entered and then 5-10 seconds later it takes me back to the lock screen and asks for my password again. Usually when it "takes me back to the login screen" it actually just makes the screen black until I press a key or move the mouse and then it "wakes up" again and shows the login screen.
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Hi Kevin,
You mention that you moved the TC's network up in priority, so you may have already done these things as well. Apologies in advance if that is the case.
If you normally use your MBP with wireless, make sure that the AirPort connection is that top of the connections list in System Preferences > Network. Click on small gear icon at the bottom of list to put the Airport connection first in line to connect so the MBP will not look for an ethernet connection first.
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Make sure there is a check mark next to Remember Networks Joined. Leave the next two check boxes blank.
Any help? My MBP connects consistently and quickly with these settings when the cover is opened.

Lenovo G770 Fan not spinning up after resume from sleep or hibernate

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