[GLLUG] fscked usb

Hearns, John john.hearns at mclaren.com
Tue May 28 08:38:33 UTC 2013

>> Give us the output of  dmesg   after you have plugged the printer in,
>> please.
>That might be difficult whilst using a live distro,

You can run dmesg in a terminal window, then cut-and-paste into an email.
Or directly into a web browser if you use webmail.

Or plug in a USB stick and dmesg > /mountpoint/filename


>> echo Y > /sys/module/usbcore/parameters/old_scheme_first
>> echo Y > /sys/module/usbcore/parameters/use_both_schemes

>Right, done and just rebooting, to see what happens. Its made no
>change, unfortunately.

You should not have rebooted following that change - it is not permanent.
If you want to make those setting permanent you can do it as part of the kernel options:
The option is    usbcore.use_both_schemes=1

Or you can put those two lines into an init script - probably  /etc/init.d/boot.local

>> This is documented in /usr/src/Linux/drivers/usb/core/usb.c

> Even with the correct url, it does not work as /usr/src/* because that
> just contains linux-headers, linux-kbuild, nvidia, tp-smapi, so i'll

You need to have the kernel source package installed to have those files on your system.
Or just Google for it - there are plenty of examples on the Web.


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