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

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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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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