[ipw2200]Confirmation of power management problem

[ipw2200]Confirmation of power management problem

[Shawn Starr]

I managed to install Windows XP and test the ipw2200 wireless card, when I 
shut down the system with Windows, ACPI turned off the ipw2200 card, In 
Linux, because ACPI does not work for the T42 thinkpad, the wifi card remains 
on even after holding the power button to cut power. 

Can I cut power to the ipw2200 within Linux when I don't want to use the card?

Shawn.


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Re: [Ipw2100-devel] [ipw2200]Confirmation of power management problem

[Alejandro Bonilla]

Shawn,

    You cannot remove the power going to the adapter. You may not load 
the module, so you can avoid any type of problem.

    I do use a T40 and do not have a problem.

- Alejandro


Shawn Starr wrote:

>I managed to install Windows XP and test the ipw2200 wireless card, when I 
>shut down the system with Windows, ACPI turned off the ipw2200 card, In 
>Linux, because ACPI does not work for the T42 thinkpad, the wifi card remains 
>on even after holding the power button to cut power. 
>
>Can I cut power to the ipw2200 within Linux when I don't want to use the card?
>
>Shawn.
>
>
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>



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Re: [ipw2200]Confirmation of power management problem

[Pavel Machek]

Hi!

> I managed to install Windows XP and test the ipw2200 wireless card, when I 
> shut down the system with Windows, ACPI turned off the ipw2200 card, In 
> Linux, because ACPI does not work for the T42 thinkpad, the wifi card remains 
> on even after holding the power button to cut power. 

So you hold power button for four seconds and it does not turn the
ipw2200 off? Well, IBM has some broken hardware to fix if that is the
case.

								Pavel
-- 
People were complaining that M$ turns users into beta-testers...
...jr ghea gurz vagb qrirybcref, naq gurl frrz gb yvxr vg gung jnl!


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Re: [Ipw2100-devel] Re: [ipw2200]Confirmation of power management problem

[Shawn Starr]

It's been resolved by Len, his newest ACPI updates in 2.6.9-rc4+ fixed that 
problem. ACPI was not shutting the device down, the only buzzing heard now is 
when the laptop is in S3 mode, but I believe this to be normal since it needs 
to resume w/o reloading the firmware. This does work upon resumption of 
system.

When I press power button, after the system has turned 'off', the CPU fan 
shuts down and so does the ipw2200bg card.

Hardware is all good :)

Shawn.

On October 18, 2004 09:35, Pavel Machek wrote:
> Hi!
>
> > I managed to install Windows XP and test the ipw2200 wireless card, when
> > I shut down the system with Windows, ACPI turned off the ipw2200 card, In
> > Linux, because ACPI does not work for the T42 thinkpad, the wifi card
> > remains on even after holding the power button to cut power.
>
> So you hold power button for four seconds and it does not turn the
> ipw2200 off? Well, IBM has some broken hardware to fix if that is the
> case.
>
>         Pavel


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Re: [Ipw2100-devel] [ipw2200]Confirmation of power management problem

[Shawn Starr]

Interesting, I believe the IBM ACPI has been merged into ACPI proper as latest 
-mm shows ACPI ThinkPad IBM source files.

On October 11, 2004 02:07, Joris Mocka wrote:
> Hi Shawn,
>
> Shawn Starr sagte:
> > The problem is, there is power going to the adapter even if I don't
> > load the  driver.
>
> ...before I load the module on my T42 there is no power on wlan, if I
> indicate it on the wlan-led!
>
> > I can confirm this because when you shut it off, there is a distinct
> > buzzing  coming from the ipw2200 device (right underneath the Sympatics
> > touchpad).
>
> ...I will try to hear for it in the evening!
>
> > If I use Linux to shut down the system w/ ACPI, then I have to
> > physically cut  power by removing battery then it is totally off.
>
> ...I did asking for the same couple of days ago but nobaody had any hints
> for me. Unloading the driver didn't work, led was still on an powering off
> didn't work. There was a hint to switch off apic:
> http://mailman.linux-thinkpad.org/pipermail/linux-thinkpad/2004-September/0
>19992.html but it didn't worked for me. I have to test it without loading
> the ipw2200 module, maybe then it will work!? But for powering off you just
> have to press the power button maybe 30 to 50 seconds. Then it will power
> off without removing battery.
>
> > This does not happen when booted into XP...something is fishy, I do
> > know ACPI  *IS* broken with the T42 as this was confirmed @ OLS this
> > year.
>
> ...but it's working much better than apm. Using apm will freeze the T42
> totally. The only thing that didn't work is power off, rest is fine:
> Buttons, Sleep in state 3, powering off hd's and so on.
> Regards
> Joris


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Re: [Ipw2100-devel] [ipw2200]Confirmation of power management problem

[Shawn Starr]

yes, nolapic in 2.6.9-rc3-bk8 works. I will bump my kernel and apply this 
patch unless its merged into -rc4? If not apply manually.

Len, great work on getting ibm-acpi into -mm. us ThinkPad users appreciate it!

This also solves the ipw2200 being stuck on during power off.

Shawn.

On October 13, 2004 12:48, Brown, Len wrote:
> Re: poweroff
>
> Until last week, Linux forced the LAPIC to
> be enabled on systems who's BIOS had it disabled.
> You can observe it is enabled or disabled by
> looking if "LOC" is non-zero on /proc/interrupts.
> (non-zero means you're getting local APIC timer interrupts)
>
> But this caused a number of machines to power-off
> incorrectly.  The workaround was to boot with "nolapic".
> This is fixed in the latest 2.6.9 tree, and the patch is here:
> http://linux.bkbits.net:8080/linux-2.6/cset@41696f84CrEcJrCzRqhBpHrjqxy1
> 1w?nav=index.html|ChangeSet@-7d
> Now Linux believes what the BIOS says, and you can force
> the LAPIC to be enabled against the BIOS' wishes with "lapic"
> if you like.
>
> If your system still doesn't poweroff when using this patch,
> or if a manual "nolapic" is still necessary to poweroff
> your machine, please let me know cc: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
>
> thanks,
> -Len
>
> ps. Re: ibm-acpi is in -mm
>
> Yes it is, but it isn't in Linus's tree yet.
> I'm expecting an updated version of this patch soon and
> we'll push it into 2.6.10 as EXPERIMENTAL, which it is.
>
>
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RE: [Ipw2100-devel] [ipw2200]Confirmation of power management problem

[Brown, Len]

yes, this patch is in 2.6.9-rc4.

cheers,
-Len

>yes, nolapic in 2.6.9-rc3-bk8 works. I will bump my kernel and 
>apply this 
>patch unless its merged into -rc4? If not apply manually.


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