USB Question...

[VirginSnow at vfemail.net]

> Date: Thu, 05 Mar 2009 04:21:45 -0500
> From: Brian Chabot <brian at datasquire.net>

> I recently got a (rather nice otherwise) sound recorder that connects 
> via USB to a computer.

Does it play back as well as record?  If so, do the recordings sound
correct when played directly from the device?

> When I plug it in, I get this in my /var/log/messages:
> 
> Mar  5 04:14:35 ono-sendai kernel: usb 2-1.4: new full speed USB device 
> using ohci_hcd and address 64
> Mar  5 04:14:35 ono-sendai kernel: usb 2-1.4: not running at top speed; 
> connect to a high speed hub

That's not likely to be a problem unless you're playing a high bitrate
mp3 directly over USB from the device, with lots of other traffic on
the bus.

> Mar  5 04:14:41 ono-sendai kernel: attempt to access beyond end of device
> Mar  5 04:14:41 ono-sendai kernel: sdb: rw=0, want=251840, limit=246864

That message is often indicative of a corrupt FS.  Did you specify any
low-level filesystem parameters when you mounted the device, or did
you let it autoguess the format?  I've found that some portable music
players use non-standard vfat options.  You may need to inspect the
partition table, fs, and invoke mount directly with the corresponding
options.  This is what I had to do, for example, with an "Ilo" 2GB MP3
"player" which I got from one of those big blue stores.  Besides being
a pain to mount, the Ilo wouldn't play my homemade MP3s, so I ended up
just returning it.