04-14-2012 12:02 PM - edited 04-14-2012 03:53 PM
Hi, I have a W520 about a month old with a i7 2860QM. I am using the Lenovo preload image. I recently started having power issues where the laptop would sleep on it's own after a few minutes. I have also had problems with the preload where USB mouse used to wake the laptop but this functionality also stopped working (removing and reinstalling the USB root hubs caused the mouse wake to start functioning again) I also have a BT keyboard that used to wake the laptop but no longer does. My current issue is that Turboboost stops working (monitoring this using the Intel Turboboost monitor tool), in my case after going on battery and perhaps coupled with the other power problems I mention, no Turboboost now. I could try to reboot, perhaps use Throttlestop, but why should I have to? Why all these ANNOYING problems with this laptop? As part of the sleep problem I have removed and reinstalled the power manager driver and the TVT power manager to no avail. The machine still goes to sleep after a few minutes (on it's own), Turboboost does not work now, and my BT keyboard still won't wake this thing. Anyone? I have read some long disturbing threads regarding power management and some thinkpads (to include our W520's). This is really frustrating with a new machine that has actually become more a burden than something enjoyable (I also had BT problems and had to replace the BT radio). So much for my experience with this laptop thus far, it's not been very good.
--Reboot and Turboboost started working again. Why did I need to reboot? My questions are (did Turboboost even work while on battery? --I have since read Turboboost is not enabled by design while on battery for the w520 per another forum post http://forums.lenovo.com/t5/W-Series-ThinkPad-Lapt
04-14-2012 03:08 PM
Sorry I can't help with your specific question But I have radom issues with the power manager options. Even though I avoid making changes I get different results each time the machine comes out of sleep.
I hope maybe Lenovo support might be able to help you within the warranty.
04-14-2012 03:29 PM - edited 04-16-2012 08:55 AM
Yes. I think many people have had problems with power management and speedstep on the W520s. My machine still will not wake up with a BT keyboard (though at one point it did), USB mouse stopped waking the laptop (deleting/reinstalling USB root hubs fixed), Turboboost no longer working when back on AC after using battery, and no matter what power scheme I select (Max perf and Power source optimized) and having the laptop set not to sleep, it still goes to sleep on it's own. Using powercfg I could not find any obvious problems, I have reset all the power themese, removed/installed TVT PM device, and Power Manager with no results thus far.
It is pretty miserable with the thing just sleeping on it's own. I have to wake it up (thankfully the mouse wake it up again), wait for the bluetooth keyboard to be recognized, and then I can login. This is nearly everytime I step away from the machine. It just goes to sleep after being idle a few minutes.
I also tried reseting the CMOS (unplugged battery) which did not make any difference. It seems to happen after the first sleep that the laptop starts sleeping though no sleep timers are set for it to do so. The laptop is connected to an external display and the lid is shut, it almost acts as though it goes to sleep because the lid is shut but I have it set to do nothing when the lid is closed. I should probably start a new thread for this.