On Tue, Mar 01, 2011 at 04:10:43PM +0000, Simon Leung wrote:
> Hi all,
>
> I'm having a problem with my 3G USB stick (Huawei E220) .
>
> The kernel I'm using is version 2.6.21 customized for an ARM board. When
> I insert the USB stick into the system, normally 3 device show up:
> /dev/ttyUSB{0,1,2}. The problem I' having is that some time, only the
> first one shows up and I cannot connect to it. When this happens,
> normally a reboot will fix it.
>
> As I said, this sounds like a kernel/driver issue to me. Could somebody
> give me some pointers as how to prove/fix it?
As you are stuck with an obsolete kernel version, please get support
from the vendor of that kernel, it is very old and we can't do much, if
anything, about it :(
Can you duplicate this problem on a modern kernel (like one released in
the past year?)
thanks,
greg k-h
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