01-29-2010 08:28 AM
I have a T-61 and it's just started to randomly go to sleep when it wants. This is very frustrating as it may wait a few hours before doing this or do it multiple times. I have done a lot of searching on the net and have found a possible link to newer versions of thinkpad power management software. I removed this app and the driver and went a few weeks without incident, but it just started happening again out of the blue. I use this laptop at work and can hardley get anything done due to it randomly going to sleep on me. I don't know why there are hardly any cases of it in here, but just do a google search and you will see there are others having this exact same issue. Please help or give further suggestions.
03-17-2010 01:26 PM
I've got a T61p running
Vista Ultimate 6.0.6002 SP2 Build 6002
Lenovo 7LETC6WW (2.26) BIOS
What else? AC connected, battery un-installed, WiFi network connection
Seems to run fine in Safe Mode and Safe Mode with Networking (although I don't use either mode for too long, maybe 30 minutes)
I saw a lot of posts on T400 shutdowns elsewhere on the site, but this is definitely sleep mode. The laptop has been relatively stable since I bought it in ~12/07. For the past ~2 weeks, it's been entering sleep mode randomly and frequently. I've tried System Restore to pre-sleep issue restore points, but it doesn't help.
Suggestions are greatly appreciated.
03-17-2010 07:47 PM
The issues most likely lies with hte GFX card.
Try hplies.com and nvidiadefect.com to read up on the issue. Even though you don't have HP laptops, teh defect still aplies t oyou.
03-18-2010 12:44 AM - edited 03-18-2010 12:50 AM
Thanks for the leads, Sushiserv. I'll look into them. On first glance, it looks like the Nvidia chips in question are 8400M/8600M. I'm running a Quadro NVS 140M and plan to google "NVS 140M defect" in the morning. Thanks, again.
03-18-2010 01:41 AM
this could be due to overheating in the CPU/GPU.
Download TPfancontrol to monitor the temperature on these two components, then use prime95 (free download) and see whether you can force it thermal overload.
03-18-2010 05:47 PM
So I downloaded CPUID Hardware Monitor and see that my GPU is 93 degrees C! From what little I've read, that's a little high, to put it mildly. Again, thanks for the leads, everyone. I'm still blacking out regularly, but at least I've got some ideas to pursue for resolution.
03-18-2010 06:44 PM
try cleaning the heatsink if you haven't already done that. Do you have warranty still? If not you can get post warranty warranty extension, or try to reapply the thermal compound (this should be done only if you do not want to pursue warranty resolution).
Also, it would be wise to use the TPfancontrol to see whether the heatsink still works properly, at this temperature your fan should be spinning at around 3500 rpm or so.
Make sure to check that, there is a good possibility that the heatsink is the culprit of the problem.
03-19-2010 05:00 AM
Actually for me, my laptop had the defect ive 6150 GPU.
On HPlies, after summing up a lot of stuff, we determine that the defect gpus were:
Additionally, nVIDIA's insurance company is suing them for not releasing information on hte fact these were defective in the first place.
This one states of reports that the 140M is defective. No HP laptops have hte 140M, so that is why HPlies disregarded it. I may be wrogn about some of those chipsets up there.
03-19-2010 07:35 AM
I think Lead_Org is on the right track here...generally I would think unintended suspend / sleep events are either going to be related to power management / software problems, or an overall system overheating condition.
I have seen T61 systems load up with dust, and it is the CPU, not the GPU that overheats at 95-99C triggering the suspend condition. I would try the temperature monitoring software to get a handle on what the CPU is doing, clean the fan and heatsink fins with compressed air, consider removing the old thermal paste and re-applying artic silver. (This assumes you are out of warranty and want to debug this yourself).
I would then take a look at the software again.
I believe you are trying to help in this discussion, but I really don't believe the Nivida issues apply in this particular case, even though the system may have an Nvidia chip. This is not exemplary of the Nvidia fail condition due to the solder bump / crack issues.
Please don't repost these further.
03-19-2010 12:25 PM
Thanks, Mark. ...I'm still under warranty, actually. I just figured this was a driver/software issue initially, so I was trying to sort this out myself. Will cleaning the fan void my warranty?