Hi, 

[ Continuing an older discussion because I'm seeing the same problem ]

John H. wrote:

> how do i figure out which #3 is?

In my case, it's a 7-port hub. If the four devices that I have on my desk
(mouse, keyboard, media drive, and Bluetooth) are all plugged in when I
boot, the USB subsystem reports this -71 error, then hangs.

If I unplug one of them (ANY one) during boot, the system comes up without
any problems or error messages. I can then plug the fourth device back in
and use all four of them, also without problems.

My scanner reports this error when plugged in (and lsusb doesn't report
it), but it then recovers somehow, and mostly works with libusb -- I need
to restart xscanimage quite often. The old in-kernel scanner driver, now
deleted, was far more reliable.

I also have a USB stick with a built-in hub plus "security device"
(whatever _that_ is) which causes the same error when plugged in.
Interestingly this happens only on my i386 system but not on the
Powerbook. This seems to indicate a timing problem with the uhci driver.

Kernel version: Any 2.6 I ever tested (2.4 doesn't run on the system),
including several linux-2.6-mm patches. Reasonably standard Debian-testing
userspace.

$ lsusb
Bus 005 Device 001: ID 0000:0000
Bus 004 Device 001: ID 0000:0000
Bus 003 Device 001: ID 0000:0000
Bus 002 Device 001: ID 0000:0000
Bus 001 Device 010: ID 0f4d:1000 Microtune, Inc.
Bus 001 Device 009: ID 045e:001e Microsoft Corp. IntelliMouse Explorer
Bus 001 Device 008: ID 057b:0020 Y-E Data, Inc. HEXA Media Drive 6-in-1 Card Reader 
Writer
Bus 001 Device 007: ID 046a:0001 Cherry GmbH My3000 Keyboard
Bus 001 Device 006: ID 05e3:0604 Genesys Logic, Inc.
Bus 001 Device 001: ID 0000:0000
$

I'll turn on USB debugging next.  :-/
-- 
Matthias Urlichs


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