Dear all, First of all let me apologize if this question should be done in other list. In that case, if anyone can redirect me I would be very thankful. We have designed a board based on Freescale P2020 in which we have implemented linux-2.6.32. Attached to the P2020 we have an USB3300 (which interfaces UTMI to ULPI) and then an SSD with USB interface. When we boot, we have the USB3300 in a reset state, and when we made it leave this state and begin to work, we obtain the following traces. "2005/01/14,00:39:59 nucs kern.debug kernel: hub 1-0:1.0: state 7 ports 1 chg 0000 evt 0002 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: GetStatus port 1 status 90001803 POWER sig=j CSC CONNECT 2005/01/14,00:39:59 nucs kern.debug kernel: hub 1-0:1.0: port 1, status 0101, change 0001, 12 Mb/s 2005/01/14,00:39:59 nucs kern.debug kernel: hub 1-0:1.0: debounce: port 1: total 100ms stable 100ms status 0x101 usb 1-1: new high speed USB device using fsl-ehci and address 2 2005/01/14,00:39:59 nucs kern.info kernel: usb 1-1: new high speed USB device using fsl-ehci and address 2 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 1 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 2 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 3 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 4 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 5 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 6 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 7 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 8 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 9 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 10 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 11 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 1 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 2 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 3 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 4 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 5 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 6 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 7 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 8 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 9 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 10 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 11 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 12 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 13 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 14 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 15 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 16 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 17 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 18 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 19 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 20 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 21 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 22 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 23 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 24 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 25 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 26 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: dusb 1-1: new high speed USB device using fsl-ehci and address 3 etected XactErr len 0/8 retry 27 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 1 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 2 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 3 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 4 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 5 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 6 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 7 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 8 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 9 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 10 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 11 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 12 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 13 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 14 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 15 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 16 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 17 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 18 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 19 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 20 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 21 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 22 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 23 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 24 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 25 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 26 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 27 2005/01/14,00:39:59 nucs keusb 1-1: new high speed USB device using fsl-ehci and address 4 rn.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 28 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 29 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 30 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 31 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: devpath 1 ep0in 3strikes 2005/01/14,00:39:59 nucs kern.debug kernel: usb 1-1: device reset changed speed! 2005/01/14,00:39:59 nucs kern.info kernel: usb 1-1: new high speed USB device using fsl-ehci and address 3 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 1 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 2 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 3 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 4 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 5 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 6 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 7 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 8 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 9 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 10 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 11 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 1 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 2 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 3 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 4 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 5 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 6 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 7 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 8 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 9 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 10 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 11 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 1 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 2 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 3 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 4 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 5 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 6 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 7 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 8 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 9 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 10 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 11 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 12 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 13 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 14 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 15 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 16 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 17 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 18 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 19 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8usb 1-1: device not accepting address 4, error -71 retry 20 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 21 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 22 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 23 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 24 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 25 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 26 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 27 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 28 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 29 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 30 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 31 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: devpath 1 ep0in 3strikes 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: port 1 high susb 1-1: new high speed USB device using fsl-ehci and address 5 peed 2005/01/14,00:39:59 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: GetStatus port 1 status 90001805 POWER sig=j PE CONNECT 2005/01/14,00:39:59 nucs kern.debug kernel: usb 1-1: device reset changed speed! 2005/01/14,00:40:00 nucs kern.info kernel: usb 1-1: new high speed USB device using fsl-ehci and address 4 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 1 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 2 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 3 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 4 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 5 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 6 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 7 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 8 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 9 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 10 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 11 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 29 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 30 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 31 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: devpath 1 ep0out 3strikes 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 1 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 2 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 3 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 4 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 5 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 6 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 7 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 8 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 9 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 10 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 11 2005/01/14,00:40:00 nucs kern.err kernel: usb 1-1: device not accepting address 4, error -71 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: port 1 high speed 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: GetStatus port 1 status 98001205 POWER sig=se0 PE CONNECT 2005/01/14,00:40:00 nucs kern.info kernel: usb 1-1: new high speed USB device using fsl-ehci and address 5 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 1 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 2 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 3 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 4 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 5 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 6 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 7 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 8 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 9 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 10 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 11 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 1 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 2 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 3 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 4 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected Xusb 1-1: device not accepting address 5, error -71 actErr len 0/8 rhub 1-0:1.0: unable to enumerate USB device on port 1 etry 5 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 6 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 7 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 8 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 9 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 10 2005/01/14,00:40:00 nucs kern.debug kernel: fsl-ehci fsl-ehci.0: detected XactErr len 0/8 retry 11 2005/01/14,00:40:01 nucs kern.err kernel: usb 1-1: device not accepting address 5, error -71 2005/01/14,00:40:01 nucs kern.err kernel: hub 1-0:1.0: unable to enumerate USB device on port 1 2005/01/14,00:40:01 nucs kern.debug kernel: hub 1-0:1.0: state 7 ports 1 chg 0000 evt 0002 " I have explored the internet and have found some experiences of this kind with different laptops... It seems that removing ehci or resetting the device is sometimes the solution, but in my case removing ehci is not an option. The relevant configuration of the kernel (as far as I know) is: CONFIG_USB_SUPPORT=y CONFIG_USB_ARCH_HAS_HCD=y CONFIG_USB_ARCH_HAS_OHCI=y CONFIG_USB_ARCH_HAS_EHCI=y CONFIG_USB=y CONFIG_USB_DEVICEFS=y CONFIG_USB_EHCI_HCD=y CONFIG_USB_EHCI_ROOT_HUB_TT=y CONFIG_USB_EHCI_FSL=y CONFIG_USB_EHCI_HCD_PPC_OF=y CONFIG_USB_STORAGE=y I have also take a look to usbmon.txt and have obtained the following traces with usbmon: "dfbbdc80 199323393 C Ii:1:001:1 0:2048 1 = 02 dfbbdc80 199323420 S Ii:1:001:1 -115:2048 4 < df164500 199323575 S Ci:1:001:0 s a3 00 0000 0001 0004 4 < df164500 199323601 C Ci:1:001:0 0 4 = 01010100 df164500 199323657 S Co:1:001:0 s 23 01 0010 0001 0000 0 df164500 199323663 C Co:1:001:0 0 0 df164500 199323680 S Ci:1:001:0 s a3 00 0000 0001 0004 4 < df164500 199323684 C Ci:1:001:0 0 4 = 01010000 df164500 199355049 S Ci:1:001:0 s a3 00 0000 0001 0004 4 < df164500 199355060 C Ci:1:001:0 0 4 = 01010000 df164500 199387044 S Ci:1:001:0 s a3 00 0000 0001 0004 4 < df164500 199387051 C Ci:1:001:0 0 4 = 01010000 df164500 199419045 S Ci:1:001:0 s a3 00 0000 0001 0004 4 < df164500 199419052 C Ci:1:001:0 0 4 = 01010000 df164500 199451050 S Ci:1:001:0 s a3 00 0000 0001 0004 4 < df164500 199451057 C Ci:1:001:0 0 4 = 01010000 df164500 199451088 S Co:1:001:0 s 23 03 0004 0001 0000 0 df164500 199451092 C Co:1:001:0 0 0 dfbbdc80 199506111 C Ii:1:001:1 0:2048 1 = 02 dfbbdc80 199506118 S Ii:1:001:1 -115:2048 4 < df164500 199507054 S Ci:1:001:0 s a3 00 0000 0001 0004 4 < df164500 199507062 C Ci:1:001:0 0 4 = 03050000 usb 1-1: new high speed USB device using fsl-ehci and address 2 df164500 199647083 S Co:1:001:0 s 23 01 0014 0001 0000 0 df164500 199647090 C Co:1:001:0 0 0 df164500 199652801 S Ci:1:000:0 s 80 06 0100 0000 0040 64 < df164500 199656936 C Ci:1:000:0 -71 0 df164500 199658438 S Ci:1:000:0 s 80 06 0100 0000 0040 64 < df164500 199662434 C Ci:1:000:0 -71 0 df164500 199664958 S Ci:1:000:0 s 80 06 0100 0000 0040 64 < df164500 199668934 C Ci:1:000:0 -71 0 df164500 199669017 S Co:1:001:0 s 23 03 0004 0001 0000 0 df164500 199669026 C Co:1:001:0 0 0 df164500 199723046 S Ci:1:001:0 s a3 00 0000 0001 0004 4 < df164500 199723090 C Ci:1:001:0 0 4 = 03011000 df164500 199779045 S Co:1:001:0 s 23 01 0014 0001 0000 0 df164500 199779053 C Co:1:001:0 0 0 df164500 199779068 S Co:1:001:0 s 23 01 0001 0001 0000 0 df164500 199779072 C Co:1:001:0 0 0 df164500 199779098 S Co:1:001:0 s 23 03 0004 0001 0000 0 df164500 199779102 C Co:1:001:0 0 0 dfbbdc80 199834157 C Ii:1:001:1 0:2048 1 = 02 dfbbdc80 199834165 S Ii:1:001:1 -115:2048 4 < df164500 199834249 S Ci:1:001:0 s a3 00 0000 0001 0004 4 < df164500 199834256 C Ci:1:001:0 0 4 = 03050000 usb 1-1: new high speed USB device using fsl-ehci and address 3 df164500 199890209 S Co:1:001:0 s 23 01 0014 0001 0000 0 df164500 199890217 C Co:1:001:0 0 0 df164500 199895918 S Ci:1:000:0 s 80 06 0100 0000 0040 64 < df164500 199900049 C Ci:1:000:0 -71 0 df164500 199903409 S Ci:1:000:0 s 80 06 0100 0000 0040 64 < df164500 199907422 C Ci:1:000:0 -71 0 df164500 199908339 S Ci:1:000:0 s 80 06 0100 0000 0040 64 < df164500 199912298 C Ci:1:000:0 -71 0 df164500 199912358 S Co:1:001:0 s 23 03 0004 0001 0000 0 df164500 199912366 C Co:1:001:0 0 0 df164500 199967042 S Ci:1:001:0 s a3 00 0000 0001 0004 4 < df164500 199967083 C Ci:1:001:0 0 4 = 03011000 df164500 200023045 S Co:1:001:0 s 23 01 0014 0001 0000 0 df164500 200023053 C Co:1:001:0 0 0 df164500 200023068 S Co:1:001:0 s 23 01 0001 0001 0000 0 df164500 200023071 C Co:1:001:0 0 0 df164500 200023094 S Co:1:001:0 s 23 03 0004 0001 0000 0 df164500 200023098 C Co:1:001:0 0 0 dfbbdc80 200078123 C Ii:1:001:1 0:2048 1 = 02 dfbbdc80 200078131 S Ii:1:001:1 -115:2048 4 < df164500 200078210 S Ci:1:001:0 s a3 00 0000 0001 0004 4 < df164500 200078217 C Ci:1:001:0 0 4 = 03050000 usb 1-1: new high speed USB device using fsl-ehci and address 4 df164500 200135044 S Co:1:001:0 s 23 01 0014 0001 0000 0 df164500 200135052 C Co:1:001:0 0 0 df164500 200140739 S Co:1:000:0 s 00 05 0004 0000 0000 0 df164500 200144786 C Co:1:000:0 -71 0 df164500 200346129 S Co:1:000:0 s 00 05 0004 0000 0000 0 df164500 200350281 C Co:1:000:0 -71 0 usb 1-1: device not accepting address 4, error -71 df164500 200555599 S Co:1:001:0 s 23 01 0001 0001 0000 0 df164500 200555606 C Co:1:001:0 0 0 df164500 200555632 S Co:1:001:0 s 23 03 0004 0001 0000 0 df164500 200555637 C Co:1:001:0 0 0 df164500 200611050 S Ci:1:001:0 s a3 00 0000 0001 0004 4 < df164500 200611424 C Ci:1:001:0 0 4 = 03051000 usb 1-1: new high speed USB device using fsl-ehci and address 5 df164500 200667052 S Co:1:001:0 s 23 01 0014 0001 0000 0 df164500 200667059 C Co:1:001:0 0 0 df164500 200672752 S Co:1:000:0 s 00 05 0005 0000 0000 0 df164500 200676886 C Co:1:000:0 -71 0 df164500 200879045 S Co:1:000:0 s 00 05 0005 0000 0000 0 df164500 200883124 C Co:1:000:0 -71 0 usb 1-1: device not accepting address 5, error -71 hub 1-0:1.0: unable to enumerate USB device on port 1 df164500 201095595 S Co:1:001:0 s 23 01 0001 0001 0000 0 df164500 201095602 C Co:1:001:0 0 0 df164500 201100422 S Co:1:001:0 s 23 01 0001 0001 0000 0 df164500 201100427 C Co:1:001:0 0 0 df164500 201100446 S Ci:1:001:0 s a3 00 0000 0001 0004 4 < df164500 201100451 C Ci:1:001:0 0 4 = 01010000" I am not an expert with USB, so I do not really know how to correctly interpret this traces or what else to test. Any clues? Thanks Miguel Ángel -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
