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> Networking Via Usb Cable: "ifconfig" Works, But "usb Reset" Occurs
post May 15 2009, 05:14 PM
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my c1000, which runs Zubuntu RC1(ubuntu 8.04 supplied by Omegamoon), meet a problem:

"ifconfig" do works, but "USB reset" occurs as soon as connecting the USB cable to the host PC.

at first, "ifconfig usb0 up xxx.xxx.xxx.xxx" fails, so I unload the modules:

$modprobe -r ohci_hcd <= unload usb host module


$modprobe pxa27x_udc
$modprobe g_ether
$ifconfig usb0 netmask up

after that, "ifconfig" shows the following two interfaces:

lo ...
... <=loop interface

usb0 Link encap:Ethernet Hwaddr XX:XX:XX:XX:XX....
inet addr: Bcast: Mask:
UP ...
... <= usb0 interface appears!

everything seems OK. However, when I attach my c1000 to a PC (Linux & Windows XP) via the

usb cable:
on my Linux laptop, "dmesg" and "/var/log/messages" shows NOTHING;
and on my Windows XP laptop, NOTHING happens.
(I used to do usb networking on c1000/pdaXrom, "dmesg" on Linux will show the USB device messages and windows XP will "find new hardware".)


on my c1000/Zubuntu, "/var/log/messages" shows:

.... Zubuntu kernel: pxa2xx-udc pxa2xx-udc: USB reset

I'm confused, what's wrong? any solution?

I have to connect the zubuntu to the internet to get any packages installed. please help me!

Thank you.
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