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4 Posts

08-11-2008

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High CPU when docking W500 to Advanced Dock

2009-01-21, 3:06 AM

I have a W500 and a Advanced Dock Part number: 250310U.

 

I cold boot the notebooknot attached to the docking station, put the notebook into standby, attach it to the docking station and as it comes out of standby the machine will run about 60% CPU to DPC's and Interrupts (found using Process Explorer http://technet.microsoft.com/en-us/sysinternals/default.aspx).

 

If I cold boot the notebook on the adavance dock it will work just fine, at least not running a lot of CPU cycles on stuff beyond my analysis.

 

Has anyone else seen this or have an idea of what to do to isolate the culprit?

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4 Posts

08-11-2008

United States of America

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Re: High CPU when docking W500 to Advanced Dock

2009-01-21, 3:21 AM

I apologize, I forgot to add some system specs:

 

ThinkPad Advanced Dock Part number: 250310U

W500 Model 4058

OS: Windows Vista x64 Business

 

Thanks!

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46 Posts

12-07-2008

Australia

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Re: High CPU when docking W500 to Advanced Dock

2009-03-25, 0:51 AM

Hey I am considering purchasing the advanced dock for additional graphics card.

 

Did you solve your high CPU usage issue?

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524 Posts

02-17-2009

Vancouver Island

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Re: High CPU when docking W500 to Advanced Dock

2009-03-25, 4:27 AM

Hello nuwandame:

 

I also have a W500 and an Advanced Dock.

 

I learned early on (about 4 months ago) that life is simplest if I just shut down (fully shut down) the notebook before docking it and undocking it.  I realize that this does not provide you with a 'perfect' solution to your problem, but it has provided me with the most practical solution to the problem.

 

Michael

W520 (4270 CTO), which replaced a W500 (4062-27U), which replaced a T42P, which replaced an A21P...
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46 Posts

12-07-2008

Australia

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Re: High CPU when docking W500 to Advanced Dock

2009-03-25, 4:34 AM

Hey Michael,

 

Thanks for the response are you using Vista x64?

 

I am thinking of getting the advanced dock for the PCI-e slot just want to confirm someone is using it with W500 running vista x64.

 

I am not to concerned with cold-docking the laptop just as long as it works as expected once docked :)

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524 Posts

02-17-2009

Vancouver Island

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Re: High CPU when docking W500 to Advanced Dock

2009-03-25, 9:23 AM

Hi Jordan:

 

No, I am using Vista SP2 (beta), the 32 bit version.

 

I cannot see any benefit arising from moving to the 64 bit version, and I can sure see a whole pile of headaches arising from moving to the 64 bit version (limited driver support for legacy stuff, headaches with my CAD/CAM applications, that kind of stuff).  So, until such time as my primary applications (MS Office, Adobe CS, and Dassault SolidWorks) come out with full 64 bit support - thus giving me some good reasons to go to the 64 bit version - I am going to stay well away from it.

 

I don't mind being on the leading edge (with the SP 2 beta, which so far works very well), but I sure don't want to be on the bleeding edge, which is exactly where I would be if I moved to the 64 bit system.

 

Michael

W520 (4270 CTO), which replaced a W500 (4062-27U), which replaced a T42P, which replaced an A21P...
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4 Posts

08-11-2008

United States of America

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Re: High CPU when docking W500 to Advanced Dock

2009-03-25, 13:18 PM

Jordan,

 

I have not fixed my issue, however, I have noticed a work around that have a high probability of working.  If I shutdown the local ethernet connection, my network via access connections, the problem seems to have gone away. This only pertains to the DPC's driving high CPU and not issues with Intel graphics driver that will sometime cause high CPU. The only work around I have found for that issue is a reboot.

 

Hope this helps!

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46 Posts

12-07-2008

Australia

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Re: High CPU when docking W500 to Advanced Dock

2009-03-25, 21:34 PM

Michael,

 

Yeah was prepared to make the jump to x64 has been relatively smooth all of the tools I mainly use have been on 64-bit platforms for a while so not an issue there (Office, Altium, SW, Sonar, Visual Studio) all of my old tools are also functioning after learning some tricks of how 64-bit WoW works.  One the of major drivers for going x64 is RAM I can now access all of it and my VM's can run in x64 allowing me to test new MSFT servers which require x64 host.

 

nuwandame,

 

Thanks for that, I have note experienced the high CPU% from Intel graphics as I have given up on switchable for the time being gone discrete only and used MobilityModder to run latest ATI drivers hopefully one day Lenovo will release drivers that work.

 

One thing I can suggest that had a large improvement to the responsiveness of USB/Firewire is updating the SATA controller using the latest Intel(R) Matrix Storage Manager 8.8.0.1009 http://downloadcenter.intel.com/filter_results.aspx?strTypes=all&ProductID=2101&OSFullName=Windows+Vista*〈=eng&strOSs=163&submit=Go!

 

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524 Posts

02-17-2009

Vancouver Island

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  • Message 9 of 9

Re: High CPU when docking W500 to Advanced Dock

2009-03-26, 0:12 AM

Nuwandame:

 

I second Jordan's suggestion to upgrade that SATA thing (the Intel Matrix driver) using the software at the Intel website.  I did that quite a while ago, and my computer works fine.

 

As for all this hot docking, hot undocking, etc. - I don't want to sound like an old codger or a Luddite, but honestly, I have never had any success with hot docking and undocking since the concept first came out with Windows 98 SP II at the end of the last millennium.  I suppose that in theory, it should work, but in practice, if you have other stuff connected to your dock (keyboards, USB storage, networks, etc.), the laptop always gets confused when it is hot docked or hot undocked.  Obviously, the only purpose in life of having a dock is to have other stuff connected, so....  :)

 

Anyway, I always turn the thing completely off before docking or undocking.  I can put up with the extra minute it takes to to start up and shut down far easier than I can put up with all the grief it would take to get the hot docking working correctly.

 

Jordan also raises a good point about disabling the fancy dual graphics capability of the W500.  Although I suppose that the dual graphic capability offers some potential for extended battery life (if that is important to a user), like hot docking, I have found that it is just more trouble than it is worth.  I went into the BIOS, told the computer to not try to do me any favours and just use the fancy power hungry graphics all the time, and the computer works just fine now.

 

"Features" are not always "Benefits", if you know what I mean. :smileywink:

 

Michael

W520 (4270 CTO), which replaced a W500 (4062-27U), which replaced a T42P, which replaced an A21P...
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