usb enclosure - control timeout on ep0in, device not accepting address

[Mr. Adam ALLEN]

On Sun, 2004-08-01 at 17:36, Jeff Vian wrote:
> On Sun, 2004-08-01 at 10:41, Mr. Adam ALLEN wrote:
> > On Sun, 2004-08-01 at 05:36, rusecure at rogers.com wrote:
> > > Hi,
> > > 
> > > I'm running Fedora 2 on an IBM R32 laptop.
> > > Kernel 2.6.6-1.435.2.3
> > > 
> > > I get the following error when I try and plugin a 60GB, USB 2.0, 2.5HD
> > > enclosure:
> > > 
> > > Jul 31 23:26:57 localhost kernel: usb 2-2: new full speed USB device
> > > using address 2
> > > Jul 31 23:27:02 localhost kernel: usb 2-2: control timeout on ep0in
> > > Jul 31 23:27:03 localhost kernel: usb 2-2: device not accepting address
> > > 2, error -71
> > > Jul 31 23:27:03 localhost kernel: usb 2-2: new full speed USB device
> > > using address 3
> > > Jul 31 23:27:03 localhost kernel: usb 2-2: device not accepting address
> > > 3, error -71
> > 
> > I had the same thing with my USB hard drive enclosure on the laptop, and
> > it ended up as a power issue (or lack of it). FWIW the laptop I have is
> > a Dell L400. 
> >  
> > Try using a powered hub to see if that solves the problems. 
> > 
> > I had first borrowed my brother in-laws enclosure and just put it down
> > to bad usb in 2.6 (this was with FC2 tests), and the 2.4 Kernel I had
> > access to worked (but it wasn't the laptop and had a good PSU). 
> > 
> > When my enclosure is underpowered the drive constantly seeks just making
> > lots of clicking noises.
> 
> And the drive enclosure does not have its own power source??  OUCH!!!!!.
> 
> If it does, make sure you use that and do not try to power a drive off
> the usb port.
> 

It never came with a power-supply, it's idea was a fly-lead that plugs
into the second USB port- but this just seemed as flaky as just using
one usb port. 

> If it does not, then for sure use a powered hub. The hub should have
> more power available than the PC/laptop port.
> 
> USB ports are severely limited in the amount of power available in all
> cases (some more than others).  Devices that have high power demands
> should IMHO never be run off the usb port but should have their own
> power source.

At work there are too many retarded rules... 1) No multimedia can be
stored on work provided PC's. and 2) no untested equipment can be
plugged into the mains, 3) only standard equipment can be tested without
putting a business case forward.

..So at work there is no choice but to run the drive without power- but
it has held up well all this time.

I remember a time when third line support had to run around testing the
power requirements of Speedtouch modems and what was kicked out of MB's
because there were lots of calls to the effect of- the internet doesn't
work (turned out the speedtouch drivers didn't get loaded during boot-up
because it didn't get the power required).
-- 
Regards,
Adam Allen.

adam at dynamicinteraction.co.uk
pgp http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x553349DB

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 189 bytes
Desc: This is a digitally signed message part
URL: <http://listman.redhat.com/archives/fedora-list/attachments/20040801/31545be8/attachment-0001.sig>