Re: [patch] workaround zd1201 interference problem

From: Pavel Machek
Date: Thu Jun 15 2006 - 16:59:51 EST


Hi!

> Pavel Machek wrote:
> >if you plug zd1201 into USB, it starts jamming radio,
> >immediately. Enable/disable, or iwlist wlan0 scan, or basically any
> >operation unjams the radio. This patch works it around:
>
> Can we be any more specific?
>
> At which precise point does the interference start? Does it happen even
> without the driver loaded?
>
> Which operation is the one which stops the interference, the enable or
> the disable?

enable alone is enough to stop the interference, but leaving card
enabled after load seems like a dirty hack.

> Does this happen on every plug in, or just sometimes? Is it affected by
> usage patterns such as having the device plugged in throughout boot,
> reloading the module, etc?

If I remove the firmware file, interference does not start... that
should be close to "not having module loaded".

I think I've answered all the questions now? :-).

Pavel

--
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(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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