Re: WLAN USB at boot time not recognized

["Thomas Herrmann" <ollo.diab@gmx.de>]

>Some USB devices seem to need power cycling to enumerate properly,
>and not all motherboards are wired so that Linux can do that.
>
>You might have better luck hooking that device up through an
>external hub.
>
>- Dave

Hi Dave & list,

Dave might be right with his comment on power cycling. The system does
recognize and configures the USB device after a power cycle (a real one with
the power supply being disconnected from the wall plug).

Now, since I don't have a hub I did some more experiments. I disabled the
hotpluging scripts and put the ohci_hcd module into the modules.autoload
file. Then I start the wlan driver as well as the network service in the
default runlevel and everything is working well, even after a soft reboot.

One major difference I see between using hotplug and the manual approach, by
using hotplug and put the system to halt the USB WLAN device is still
powered (control light stays on), while with the manual procedure described
the device control light turnes off when the system goes to halt.

What is hotplug doing different to the USB controller hat the device stays
powered while the system halts?

Thanks,   Thomas


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