Re: System hangs when using USB 3.0 HD with on Ubuntu

Jonas Schwertfeger
2010-03-30T07:45:14Z

On Fri, Mar 26, 2010 at 11:30 PM, Douglas Gilbert <dgilbert@interlog.com> wrote:
>> Booting into a minimal userspace environment (for example, with
>> init=/bin/bash) might prove this.
>>
>> No doubt the reason the drive fails to respond is because it can't handle
>> these commands and gets fatally confused.
>
> The ATA commands seem to be:
>   IDENTIFY DEVICE  (via the ATA_12 tunnel)
>   SET FEATURES     (via the ATA_16 tunnel)
>   IDENTIFY DEVICE  (via the ATA_16 tunnel)
>
> The last one fails but that could be caused by
> the second last one. Doesn't look like smartd.
> My money would be on udev.

Doug was right. I switched into runlevel 1 and connected the drive.
Same errors as before. Then, I unplugged it, stopped the udev daemon
and plugged it back in. Voila, I was able to manually mount the drive
with no issues.

Where do we go from here? Does anyone know how to debug udev?

-Jonas
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