Re: etch no wifi with ipw2200
On Fri, 23 Feb 2007 08:07:51 +0100
Mirto Silvio Busico <mbusico@technip.com> wrote:
> Joey Hess ha scritto:
[snip]
> > ipw2200 needs firmware, which is available from
> > http://ipw2200.sourceforge.net/firmware.php
> >
> > (As a general rule any time a network or especially wireless device
> > doesn't work, go looking for the firmware).
> >
> >
> I'm a little confused.
> In my mind, loading (or upgrading) firmware in a device mean writinig
> into the device something.
> When loaded or upgraded the firmware stays into the device also if you
> power off and on again the device.
>
> If this is correct, the sequence I used:
> boot Etch: no wifi
> boot Kubuntu: wifi works (so I suppose, if the firmware is needed
> the firmware id loaded)
> boot Etch: no wifi (and where has gone the firmware?)
>
> should resolve any firmware problem
>
> Can you explain more?
My understanding: some firmware, such as BIOS or router firmware, is
stored in non-volatile memory, and once you 'flash' it in, it stays
there. Think flash memory, like a USB stick or digital camera memory
cards. Some firmware, such as that typically found on wireless cards,
is just stored in regular volatile memory (like the main RAM on your
computer), and must be loaded each time the device is activated.
Celejar
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