[Wylug-help] System hangs on USB - same error on different hardware and kernels

[Felix Ulrich-Oltean]

Oops - turns out it was a dodgy FireWire card - it was the only common
thing between all the failed attempts.

Felix.



On Thu, Dec 31, 2009 at 11:10:30AM +0000, Simon Greenwood wrote:
> 2009/12/30 Felix Ulrich-Oltean <linux at felixu.com>
> 
> > Hi again
> >
> > I've now tried installing Ubuntu 9 (also tried running the live cd
> > version of it), but the system still hangs.
> >
> > I tried not having any SATA devices, but using an old IDE hard drive
> > instead - same problem, i.e. system hangs after all the messages about
> > ehci_hcd.
> >
> > I've also tried disabling the USB stuff in the BIOS - no change.
> >
> > I can get a "rescue" boot going from the Debian install CD if I append
> > the "nousb" option to the installation command.
> >
> > Does anyone know what GRUB commands the Debian "install nousb" uses.  I
> > believe the nousb thing is just a debian install command, but I'm not
> > sure that the options are if I tried to pass them to the "kernel"
> > command in grub.
> >
> >
> The error that you're seeing vaguely rings a bell and might relate to an
> incorrectly installed or faulty USB module, which would explain why it boots
> up with nousb. A google around 'linux ehci_hcd error confirms this. I've
> seen the problem that you're getting and it relates to the module attempting
> to get a profile for the module it has identified and on failing, bringing
> the system down with it as it's involved with storage and is therefore in
> the core system.
> 
> One workaround might be to install a system with nousb and then install the
> module using modprobe. To debug it, you should be able to boot from a live
> CD and see if the hardware USB module is identified using dmesg.
> 
> s/
> --