Ubuntu 11.10 user-laptop ttyS0

user-laptop login: [   15.402403] tegra_usb_resume: timeout waiting for USB_PORTSC1_PE
[   15.770073] usb 1-1: device descriptor read/64, error -71
[   16.090368] usb 1-1: device descriptor read/64, error -71
[   16.530337] usb 1-1: device descriptor read/64, error -71
[   16.850525] usb 1-1: device descriptor read/64, error -71
[   17.560565] usb 1-1: device not accepting address 12, error -71
[   18.160362] usb 1-1: device not accepting address 13, error -71
[   18.166811] hub 1-0:1.0: unable to enumerate USB device on port 1
[   19.760110] nvec nvec.0: could not allocate TX buffer
[   19.870220] nvec nvec.0: could not allocate TX buffer
[   24.880451] nvec nvec.0: could not allocate TX buffer
[   24.990469] nvec nvec.0: could not allocate TX buffer
[   30.000259] nvec nvec.0: could not allocate TX buffer
[   30.110425] nvec nvec.0: could not allocate TX buffer
[   35.119835] nvec nvec.0: could not allocate TX buffer
[   35.229923] nvec nvec.0: could not allocate TX buffer
[   40.237311] nvec nvec.0: could not allocate TX buffer
[   40.347232] nvec nvec.0: could not allocate TX buffer
[   45.354716] nvec nvec.0: could not allocate TX buffer
[   45.464643] nvec nvec.0: could not allocate TX buffer
[   50.472192] nvec nvec.0: could not allocate TX buffer
[   50.582245] nvec nvec.0: could not allocate TX buffer
[   55.589569] nvec nvec.0: could not allocate TX buffer
[   55.702699] nvec nvec.0: could not allocate TX buffer
[   60.717068] nvec nvec.0: could not allocate TX buffer
[   60.827052] nvec nvec.0: could not allocate TX buffer