On Hardy (2.6.24), there are still problems.  CONFIG_USB_PERSIST=y, in
/boot/config-2.6.24-16-generic.

 I don't have time right now to test a lot of stuff, for one thing
because my Toshiba A70 is really slow to boot.  (kernel seems to stick
for a while before before detecting hard drives...)

 I hibernated with a Patriot brand USB stick mounted (by
gnome/nautilus), and when I came back there seemed to be two mount
points.  /media/Patriot on /dev/sda1, and /media/Patriot_ on /dev/sdb1.
I didn't notice until I'd unmounted one of them, but I think the kernel
detected the USB stick again, instead of realizing that it was the same
one present when it hibernated.  I did remove and reinsert the USB
stick, after a while, so that's in the kernel log, too.

 My kern.log shows this.  Note the sda insertion on May 7, 23:50, then
the hibernate.  After the resume on May 8, 14:15, the USB stick is
detected as sdb.  There are some FAT directory read errors, which makes
it look like the kernel really did get something crossed up.  This might
have been the original mount which became stale after resume from
hibernation?  I don't know if there ever was a /dev/sda1 block dev after
the resume.

 Eventually just umount and pumount, and clicking on unmount in
nautilus, got rid of /media/Patriot*, and the mount entries, so I didn't
have to hack mtab or anything.


** Attachment added: "kern.log"
   http://launchpadlibrarian.net/14371322/kern.log

-- 
usb stick not mounted after hibernate
https://bugs.launchpad.net/bugs/105563
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