Mutliple card USB card readers

Jeff Spaleta jspaleta at gmail.com
Wed Sep 29 13:23:02 UTC 2004


On Wed, 29 Sep 2004 14:18:04 +0200, Kyrre Ness Sjobak
<kyrre at solution-forge.net> wrote:
> Anybody who knows how to enable mulitple LUN's? And why this isn't done
> in fedora by default?

The way it works in the fedora kernel is mult-lun devices are part of
a staticly defined whitelist of devices that are known to work with
multi-lun. The list is applied as a patch to the kernel.  The reason
why multi-lun is not turned on by default is that some devices don't
like being probed for multi-lun and that can cause a serious problem
for those devices.

So if you have a multi-lun device that isn't working you need to file
a bug against the kernel and give some specific information about the
usb device.  Specifically i think what the kernel developers need to
know about the device is contained in lsusb -v. So open a bug report
about the device and in the summary give human readable specifics
about the make and model number, and then attach the output of lsusb
-v to the bugreport.

You might want to review the lsusb -v output first for yourself and
make sure you can figure out which device in the output is the one you
want the developer's to whitelist and note the idVendor  and idProduct
lines in the summary of the bugreport.

-jef




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