W520: strange suspend-to-ram issue solved!

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W520: strange suspend-to-ram issue solved!

Fionn Behrens

Hi all,

I just wanted to tell you about the solution to a problem that has
plagued me for months.

I have a Sandy Bridge W520 with Optimus. It showed the following
behaviour: You could suspend (S3) it once without a problem, but after
the second try, it would use a lot more power than before AND it wont
run any faster than the lowest possible CPU clocking speed. This
behaviour only went away when I shut down the computer, cut off power
and restarted it.

Yesterday I found the solution to this: Install IronHide and use it to
switch the nVidia Core just on and off once after resume. Not only does
the power consumption go back to normal, but CPU frequency scaling
suddenly starts to work again, too!

Now I have the perfect Notebook, at last - great display, a nice heap of
RAM, up to 6hrs runtime on the stock 9cell and full quad core power when
I need it. No compromises. YAY! :-)

hope this helps anyone who experiences the same issue.

kind regards,
              Fionn

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Re: W520: strange suspend-to-ram issue solved!

Tom Roche

Fionn Behrens Fri, 22 Jun 2012 10:44:32 +0200
> I have a Sandy Bridge W520 with Optimus. It showed the following
> behaviour: You could suspend (S3) it once without a problem, but
> after the second try, it would use a lot more power than before AND
> it wont run any faster than the lowest possible CPU clocking speed.
> This behaviour only went away when I shut down the computer, cut off
> power and restarted it.

> Yesterday I found the solution to this: Install IronHide

How did you install IronHide? via

ppa:mj-casalogic/ironhide

or compiling from

https://github.com/MrMEEE/ironhide

?

> use it to switch the nVidia Core just on and off once after resume.

TIA, Tom Roche <[hidden email]>
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Re: W520: strange suspend-to-ram issue solved!

Fionn Behrens
On 22.06.2012 16:35, Tom Roche wrote:

>> Yesterday I found the solution to this: Install IronHide
>
> How did you install IronHide? via
>
> ppa:mj-casalogic/ironhide

Excactly. I am on oneiric and AFAIR I think it worked pretty much right
away when I installed it.

kind regards,
              Fionn



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Re: W520: strange suspend-to-ram issue solved!

ds2k
In reply to this post by Fionn Behrens
Once IronHide is installed, how do I make it turn the video off on suspend and on on resume automatically?

Fionn Behrens wrote
Hi all,

I just wanted to tell you about the solution to a problem that has
plagued me for months.

I have a Sandy Bridge W520 with Optimus. It showed the following
behaviour: You could suspend (S3) it once without a problem, but after
the second try, it would use a lot more power than before AND it wont
run any faster than the lowest possible CPU clocking speed. This
behaviour only went away when I shut down the computer, cut off power
and restarted it.

Yesterday I found the solution to this: Install IronHide and use it to
switch the nVidia Core just on and off once after resume. Not only does
the power consumption go back to normal, but CPU frequency scaling
suddenly starts to work again, too!

Now I have the perfect Notebook, at last - great display, a nice heap of
RAM, up to 6hrs runtime on the stock 9cell and full quad core power when
I need it. No compromises. YAY! :-)

hope this helps anyone who experiences the same issue.

kind regards,
              Fionn

--
The linux-thinkpad mailing list home page is at:
http://mailman.linux-thinkpad.org/mailman/listinfo/linux-thinkpad