I can confirm this. Everything worked fine with 2.6.17 on Edgy, but with 2.6.20 on Feisty, I can not use any of my usb devices. After demodprobing ehci_hcd, I can use them again.
I have tried this with Feisty on three computers and the problem only appeard on one of them with the following hardware specs: Asus A7N8X-X with NForce 2 chipset. This is the syslog output when plugging in a USB device having ehci_hcd *loaded* (thus, it does not work) Mar 7 18:46:03 ubuntu kernel: [ 2809.360819] usb 3-3: device descriptor read/64, error -71 Mar 7 18:46:03 ubuntu kernel: [ 2809.576600] usb 3-3: new high speed USB device using ehci_hcd and address 10 Mar 7 18:46:03 ubuntu kernel: [ 2809.688487] usb 3-3: device descriptor read/64, error -71 Mar 7 18:46:04 ubuntu kernel: [ 2809.904277] usb 3-3: device descriptor read/64, error -71 Mar 7 18:46:04 ubuntu kernel: [ 2810.120055] usb 3-3: new high speed USB device using ehci_hcd and address 11 Mar 7 18:46:04 ubuntu kernel: [ 2810.527642] usb 3-3: device not accepting address 11, error -71 Mar 7 18:46:04 ubuntu kernel: [ 2810.639529] usb 3-3: new high speed USB device using ehci_hcd and address 12 Mar 7 18:46:05 ubuntu kernel: [ 2811.047116] usb 3-3: device not accepting address 12, error -71 (several times) -- USB devices do not work with nforce 2 based motherboards https://launchpad.net/bugs/88746 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
