Public bug reported:

Binary package hint: linux-source-2.6.20

Hello, I've got a problem with my laptop thinkpad T40, ehci_hcd usb2.0
doesn't work at all. If I plug my external HDD or my DVBT tuner I've got
the following error:

[   39.496000] Bluetooth: L2CAP ver 2.8
[   39.496000] Bluetooth: L2CAP socket layer initialized
[   39.720000] Bluetooth: RFCOMM socket layer initialized
[   39.720000] Bluetooth: RFCOMM TTY layer initialized
[   39.720000] Bluetooth: RFCOMM ver 1.8
[   40.148000] usb 4-4: new high speed USB device using ehci_hcd and address 4
[   43.772000] eth1: no IPv6 routers present
[   44.180000] usb 4-4: new high speed USB device using ehci_hcd and address 19
[   46.092000] eth0: no IPv6 routers present
[   60.812000] usb 4-4: new high speed USB device using ehci_hcd and address 84
[   65.600000] usb 4-4: new high speed USB device using ehci_hcd and address 102
[   67.868000] usb 4-4: new high speed USB device using ehci_hcd and address 110
[   68.372000] usb 4-4: new high speed USB device using ehci_hcd and address 111
[   70.640000] usb 4-4: new high speed USB device using ehci_hcd and address 119
[   71.144000] usb 4-4: new high speed USB device using ehci_hcd and address 120
[   71.900000] usb 4-4: new high speed USB device using ehci_hcd and address 122
[   74.168000] usb 4-4: new high speed USB device using ehci_hcd and address 4
[   74.672000] usb 4-4: new high speed USB device using ehci_hcd and address 5
[   74.932000] ehci_hcd 0000:00:1d.7: port 4 reset error -110
[   74.932000] hub 4-0:1.0: hub_port_status failed (err = -32)
[   76.940000] usb 4-4: new high speed USB device using ehci_hcd and address 11
[   78.200000] usb 4-4: new high speed USB device using ehci_hcd and address 15


Here's the output of lspci:[EMAIL PROTECTED]:~$ lsusb

Bus 004 Device 001: ID 0000:0000  
Bus 003 Device 001: ID 0000:0000  
Bus 002 Device 001: ID 0000:0000  
Bus 001 Device 001: ID 0000:0000  

A workaround is to remove the ehci_hcd driver and use usb1.0... (sudo rmmod 
ehci_hcd).
I found a lot of people having the same problem (google) but still no 
solutions! So I decided to open a new bug.

I'm using ubuntu 7.04 feisty fawn but the problem occurred also with
edgy eft (I can't remember the kernel version...).

Actual kernel: Linux xens-laptop 2.6.20-12-generic #2 SMP Sun Mar 18
03:07:14 UTC 2007 i686 GNU/Linux

I also tried the following boot options: (without results)

- noapic
- nolapic
- acpi=off
- pci=noacpi

last but not least... usb 2.0 works fine with windows XP so it's not a
hardware issue ;)

Cu, xens

** Affects: linux-source-2.6.20 (Ubuntu)
     Importance: Undecided
         Status: Unconfirmed

-- 
ehci_hcd usb2.0 doesn't work on my thinkpad T40
https://launchpad.net/bugs/94540

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