lexar usb media failure to attach

[Dan Langille]

On 9 Dec 2004 at 14:11, Eric Anderson wrote:

> It won't work unless I kldunload umass before plugging it in.

I thank those that helped, via the mailing lists, and at tonights 
OCUUG <http://www.ocuug.on.ca/> meeting.  We spent some time looking 
at the differences between the 4.10 and 5.3 code to see if we could 
track down the issue.  We gave up when the pizza arrived....  There 
were 

While there, we tried the EXAR MEDIA JUMPDRIVE ELITE, rev 2.00/20.00 
on:

4.10 - failed as previously mentioned
5.3 - worked
NetBSD -current from about 2 months ago  - worked

I also tried two other USB HDDs supplied by David Maxwell and Diane 
Bruce.  Both worked under 4.10.

On the way home from the meeting, I returned the Lexar and purchased 
a Kingston Data Traveller (KUSBDTI/512CR), which I'm pleased to say 
works under 4.10/

Dec  9 21:22:17 laptop /kernel: umass0: Kingston DataTraveler 2.0, 
rev 2.00/1.00, addr 2
Dec  9 21:22:17 laptop /kernel: da0 at umass-sim0 bus 0 target 0 lun 
0
Dec  9 21:22:17 laptop /kernel: da0: <Kingston DataTraveler 2.0 6.00> 
Removable Direct Access SCSI-2 device
Dec  9 21:22:17 laptop /kernel: da0: 650KB/s transfers
Dec  9 21:22:17 laptop /kernel: da0: 489MB (1001472 512 byte sectors: 
64H 32S/T 489C)

And under 5.3:

Dec  9 21:27:25 laptop kernel: umass0: Kingston DataTraveler 2.0, rev 
2.00/1.00, addr 2
Dec  9 21:27:25 laptop kernel: da0 at umass-sim0 bus 0 target 0 lun 0
Dec  9 21:27:25 laptop kernel: da0: <Kingston DataTraveler 2.0 6.00> 
Removable Direct Access SCSI-2 device
Dec  9 21:27:25 laptop kernel: da0: 1.000MB/s transfers
Dec  9 21:27:25 laptop kernel: da0: 489MB (1001472 512 byte sectors: 
64H 32S/T 489C)

Note the faster speed under 5.3 (1MB vs 650K)

Interestingly enough, I was able to panic both 5.3 and 4.10 by 
removing the USB device at the "wrong" time.  I am unable to say just 
when that is.  Sometimes it just happened.

cheers
-- 
Dan Langille : http://www.langille.org/
BSDCan - The Technical BSD Conference - http://www.bsdcan.org/