[nzlug] Completely unmounting USB device

[Michael Field]

Strangely enough I have found similar behavior with my cheap no-brander
MP3 player (ASMART).

Something happens to corrupt the firmware if I use it on my Linux box -
it doesn't happen every time,  but only if I leave it plugged in over
suspend/resume operations.

When I next go to use it the firmware crashes during initialisation,
causing the MP3 player to reboot itself over and over.

To fix I have to re-flash the firmware.

Mike

-----Original Message-----
From: nzlug-bounces at linux.net.nz [mailto:nzlug-bounces at linux.net.nz] On
Behalf Of Reece Arnott
Sent: Monday, 7 May 2007 4:43 p.m.
To: Robin Sheat; DunLUG at lists.ethernal.org; NZLUG List
Subject: [nzlug] Re: [dunlug] Completely unmounting USB device

At 04:18 p.m. 7/05/2007, Robin Sheat wrote:
>I have an MP3 player that charges on USB. When you first connect it,
the
>computer recognises it and talks to it, and all is well. However, I
want to
>know how much it is charged. According to the manual, you can do this
in
>windows by using the 'safely remove hardware' thing. In Linux,
unmounting it
>removes the mountpoint, but it doesn't seem to remove the device node.
>
>How can I tell Linux to completely stop talking to a USB device so
it'll show
>me the amount that it's charged?

I'd also like to know as I had an issue with mine over weekend. I
plugged 
it in to charge it up and then just left it in when I turned off my
Linux 
machine. After that it wouldn't turn on at all!

It may be a problem with that particular type as I was told (by a young 
teenager mind you) that pushing a paperclip into the hole labelled Reset

would fix it. Why have a feature like that unless theres a known issue
that 
reuqires it?

-------------------------
Reece Arnott
Learning Environments Specialist
School of Business
University of Otago
Dunedin
New Zealand

rarnott at business.otago.ac.nz
-------------------------


_______________________________________________
NZLUG mailing list NZLUG at linux.net.nz
http://www.linux.net.nz/cgi-bin/mailman/listinfo/nzlug
Computer Concepts Limited
25 Leslie Hills Drive
PO Box 8744 Riccarton
Christchurch, New Zealand

Phone:  +64-3-348-2500
Fax:    +64-3-343-7569

Notice of confidential information:
The information contained in this e-mail message is 
confidential information and may also be legally privileged, 
intended only for the individual or entity named above.  
If you are not the intended recipient you are hereby
notified that any use, review, dissemination, distribution
or copying of this document is strictly prohibited.
If you have received this document in error, please 
immediately notify the sender by telephone and destroy the
message. Thank you.

All prices quoted in this email are exclusive of GST & Freight and
valid only while stocks last.