Comment 105 for bug 408165

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cturiel (carlosturiel) wrote : Re: [Bug 408165] Re: Linksys By Cisco WUSB600N v2 Doesn't Work

it is not kiding?

2011/5/1 Marco Improda <email address hidden>

> It don't work also on Ubuntu 11.04, please patch it.
>
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> https://bugs.launchpad.net/bugs/408165
>
> Title:
> Linksys By Cisco WUSB600N v2 Doesn't Work
>
> Status in “linux” package in Ubuntu:
> Triaged
>
> Bug description:
> I have a "Linksys By Cisco" brand WUSB600N v2. Its USB ID is
> 1737:0079 Rev. 0101
>
> When the USB adapter is hotplugged (or even coldplugged) the USB bus
> recognizes that "something" has been plugged in, but no additional
> modules are loaded at all. The output of `lsmod' before and after hot
> insertion is identical. So no modules claim they support this card.
>
> The original of this model, WUSB600N, is supposedly an
> rt2870-compatible chip. I am not sure whether "v2" is an entirely
> different chipset, or whether it's just rt2870 with a quirk. I tried
> manually adding the USB ID to the rt2870sta source code and rebuilding
> the driver, but doing so gave me a kernel oops within that module. So
> apparently the fix to get it supported isn't as simple as adding that
> one line. But at least rt2870 seems to be partially aware of the chip
> -- right after the oops I ran `ifconfig' and the interface was up and
> I could get its MAC address (and it was correct). But since the module
> oopsed, I was unable to send any commands to the wireless interface
> via NetworkManager, iwconfig, etc.
>
> I'm not sure how fervently upstream tries to support manufacturers who
> buy the rt2870 chipset and put it in their own product. If Ralink is
> nice enough to patch their drivers for the quirks of other vendors'
> products (such as Linksys) then it's just a matter of waiting. But if
> the action is in Linksys' court, I'm not sure they would help us at
> all. I think we will need a volunteer kernel hacker to take a look at
> it and see if the fix is reasonably easy.
>
> Since these wireless USB adapters are relatively inexpensive, I am
> willing to donate one to a single competent individual who believes
> he/she can get this working well. All I ask in return is that you get
> it working, and return it to me when you are done with it (shipping at
> my expense)... unless of course you break it, which is understandable.
> Fragile little device.
>
> NB: I've tested this thoroughly on both Jaunty and Karmic. In Karmic,
> we have the rt2800usb driver as part of the open source rt2x00 project
> (now entering mainline); but the new set of rt2* drivers still fail to
> automatically probe this card. I applied my patch to the rt2870sta
> driver downloaded from Ralink's website and built that on Jaunty, but
> did not test my naive patch against the Karmic kernel sources, as I
> expected the same result.
>
> UPDATE: I think the future of Ralink chipsets on Linux is the rt2x00
> project, as they are moving at a faster pace than rt2870sta and they
> are integrated into mainline. Their wifi drivers are first class
> citizens, with a behavior just like you'd expect from, say, iwlwifi:
> NetworkManager can use them; WPA2 works without a custom supplicant;
> no proprietary daemons; etc. Not sure how much code rt2x00 shares with
> rt2870sta (if any), but hopefully this project will pick up support
> for 1737:0079 soon.
>
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