Comment 12 for bug 1032342

On Fri, 3 Aug 2012, mat brown wrote:

> mount reports the following:
>
> /dev/sdb1 on /media/littlun type vfat
> (rw,nosuid,nodev,uid=1000,gid=1000,shortname=mixed,dmask=0077,utf8=1,showexec,flush,uhelper=udisks)
>
> Nothing shows up in syslog during transfers.
>
> One thing I hadn't tried until a moment ago was an fs other than
> fat32. Same issue occurs with ext4.

In that case you should use usbmon to record what happens during one of
the slow transfers. Instructions are in the kernel source file
Documentation/usb/usbmon.txt.

It doesn't have to be a big transfer; 10 MB will probably be enough to
point out the problem.

Alan Stern