Keyspan USB>serial

'Forum Post ulist at
Fri Oct 7 14:07:13 UTC 2005

In case someone still has this problem, I found the google cache of a
no-longer-existing Ubuntu wiki page:

I haven't tried it yet, but here's what it says:

> How to install the non-free firmware for Keyspan USB <-> serial
> converters
> KeyspanDriverHowto:: This Howto documents how to get a Keyspan
> USB-to-serial converter working with Ubuntu. Most of these devices
> require firmware to be downloaded to the device each time you connect
> it to your USB bus. The problem is that this firmware is distributed
> with a license too restrictive to allow Ubuntu to redistribute it.
> Use a kernel
> Compile your own kernel from source. See the
> KernelCompileHowto for more information on how to do this.
> Patch the ubuntu kernel
> This is a bit sneakier. For now, I will say that you need to download
> the kernel, and copy keyspan* from drivers/usb/serial to
> drivers/usb/serial in the unpacked ubuntu kernel tree. Also, copy the
> relevant bits from Kconfig in the upstream drivers/usb/serial directory
> into Kconfig in the same directory under the Unbutu source tree.
> Then compile it, using the KernelCompileHowto as a guide.
> This is a very rushed stab at an explanation, mainly so I can get the
> page out there, and tidy it up later. Sorry for the mess. :( 


edited: found the actual correct URL for the wiki page:


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