[gentoo-user] Unplugging USB wireless adapter

[gentoo-user] Unplugging USB wireless adapter

[Grant]

Whenever I unplug a USB wireless adapter I must reboot in order for it
to be recognized again.  Is there a way to avoid the reboot?

- Grant
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Re: [gentoo-user] Unplugging USB wireless adapter

[Volker Armin Hemmann]

On Donnerstag, 27. März 2008, Grant wrote:
> Whenever I unplug a USB wireless adapter I must reboot in order for it
> to be recognized again.  Is there a way to avoid the reboot?
>
> - Grant

making usb modular and unload/reload the modules?
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Re: [gentoo-user] Unplugging USB wireless adapter

[Grant]

>  > Whenever I unplug a USB wireless adapter I must reboot in order for it
>  > to be recognized again.  Is there a way to avoid the reboot?
>  >
>  > - Grant
>
>  making usb modular and unload/reload the modules?

I think I just needed to make sure to stop net.wlan0 before removing
the adapter.  I thought that didn't work before, but it seems to be
now.

- Grant
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Re: [gentoo-user] Unplugging USB wireless adapter

[Dale]

Grant wrote:
>>  > Whenever I unplug a USB wireless adapter I must reboot in order for it
>>  > to be recognized again.  Is there a way to avoid the reboot?
>>  >
>>  > - Grant
>>
>>  making usb modular and unload/reload the modules?
>>     
>
> I think I just needed to make sure to stop net.wlan0 before removing
> the adapter.  I thought that didn't work before, but it seems to be
> now.
>
> - Grant
>   

I haven't kept up with this but isn't there a hotplug/coldplug monitor 
that detects things like this?  I'm thinking hotplug is the correct one 
since the machine is powered up.

Dale

:-)  :-)
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Re: [gentoo-user] Unplugging USB wireless adapter

[Michal 'vorner' Vaner]

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Hello

On Thu, Mar 27, 2008 at 10:43:58PM -0500, Dale wrote:
> I haven't kept up with this but isn't there a hotplug/coldplug monitor that 
> detects things like this?  I'm thinking hotplug is the correct one since 
> the machine is powered up.

I think it is no longer needed and udev should take care of all this. At
last, I do not have hotplug nor coldplug and inserting/removing all usb
devices, laptop modules, PCMCIAs works on runtime.

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Michal 'vorner' Vaner

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Re: [gentoo-user] Unplugging USB wireless adapter

[Neil Bothwick]

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On Fri, 28 Mar 2008 11:09:08 +0100, Michal 'vorner' Vaner wrote:

> I think it is no longer needed and udev should take care of all this. At
> last, I do not have hotplug nor coldplug and inserting/removing all usb
> devices, laptop modules, PCMCIAs works on runtime.

That's fine with most devices, but causes a problem with network
adaptors. No hotplug system can anticipate your removing the device and
unmount NFS shares before you do it, so the only safe way to remove a USB
NIC is to bring down the interface first.


-- 
Neil Bothwick

I used to have a handle on life, then it broke.

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Re: [gentoo-user] Unplugging USB wireless adapter

[Michal 'vorner' Vaner]

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Hello

On Fri, Mar 28, 2008 at 11:42:18AM +0000, Neil Bothwick wrote:
> On Fri, 28 Mar 2008 11:09:08 +0100, Michal 'vorner' Vaner wrote:
> 
> > I think it is no longer needed and udev should take care of all this. At
> > last, I do not have hotplug nor coldplug and inserting/removing all usb
> > devices, laptop modules, PCMCIAs works on runtime.
> 
> That's fine with most devices, but causes a problem with network
> adaptors. No hotplug system can anticipate your removing the device and
> unmount NFS shares before you do it, so the only safe way to remove a USB
> NIC is to bring down the interface first.

Yes, sure. It can't unmount it and terminate the connections. However,
there is no reason why the device shouldn't be detected again. And, if
hotplug can do it, why couldn't udev?

I was just saying hotplug is outdated and replaced by udev.

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If you want more random text, just respond to this email.

Michal 'vorner' Vaner

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Re: [gentoo-user] Unplugging USB wireless adapter

[Grant]

>  > I think it is no longer needed and udev should take care of all this. At
>  > last, I do not have hotplug nor coldplug and inserting/removing all usb
>  > devices, laptop modules, PCMCIAs works on runtime.
>
>  That's fine with most devices, but causes a problem with network
>  adaptors. No hotplug system can anticipate your removing the device and
>  unmount NFS shares before you do it, so the only safe way to remove a USB
>  NIC is to bring down the interface first.

Here's the problem.  I have an Edimax and a Linksys USB adapter.  They
both use the rt73usb driver in 2.6.24.  I can stop the interface and
successfully switch from Edimax to Linksys, but trying to go from
Linksys to Edimax says the hardware is not present when trying to
start the interface again.  Rebooting fixes it.  Can anyone make sense
of that?

- Grant
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