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solamour
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Joined: 21 Dec 2004
Posts: 491
Location: San Diego, CA

PostPosted: Sat Feb 23, 2013 3:32 am    Post subject: USB WiFi Device Not Recognized Reply with quote

Until recently, when I plug in a USB WiFi device, "/etc/udev/rules.d/70-persistent-net.rules" gets automatically updated with a new entry (typically the device is named "wlan0"), and everything worked perfectly.

But "70-persistent-net.rules" doesn't get updated anymore. I might be wrong, but I think it's happening after I updated to "udev-197-r8".

"lsusb" shows the device ("Linksys WUSB100"), so I guess at least something is working correctly.
Code:

$ lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 008: ID 04d9:1702 Holtek Semiconductor, Inc.
Bus 002 Device 009: ID 1737:0078 Linksys WUSB100 v2 RangePlus Wireless Network Adapter [Ralink RT3070]


I'd appreciate any suggestions on how to get it working again. Thank you.
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sol
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solamour
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Joined: 21 Dec 2004
Posts: 491
Location: San Diego, CA

PostPosted: Sat Feb 23, 2013 8:38 pm    Post subject: Reply with quote

I don't think I fully understand how this new "Predictable Network Interface Names" is supposed to work, so I just grabbed the MAC address of the USB WiFi device and modified "/etc/udev/rules.d/70-persistent-net.rules" manually, and everything is working as expected.
Code:
udevadm info -a -p /sys/class/net/wlan0 | grep address

It works, so I'll just leave it as is for now, but I'd like to know how the new method is better without breaking existing systems.
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sol
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