On Fri, Mar 15, 2013 at 11:09 AM, Brian Flaherty <b...@yahoo.com> wrote:
> Hello,
>
> I have two laptops:
> - Lenovo X201 running Debian unstable, kernel 3.2.0-4-amd64 (also has
> 3.2.0-3-amd64 and 2.6.32-5-amd64)
> - Thinkpad X31 running an out-of-date Debian unstable, kernel 3.2.0-2-486
> (haven't turned this one on in a while and consequently haven't updated
> packages)
>
> Also have a 600GB LaCie external hard disk. When I plug the disk's usb cable
> into the X201 (up-to-date), the laptop notices nothing. The disk does start
> doing stuff, but no acknowledgment in dmesg or lsusb. Plugged the disk in to
> a Mac machine, which recognized it. On the mac, I reformatted it to vfat.
> Plugged it into the X201, still no response on the computer.
>
> I plugged the same harddrive into my old X31 running the old kernel and it
> recognized it as /dev/sdb1. I ran badblocks (for hours) and it said
> everything was fine. I plugged it into the X201 and still nothing.
>
> A further troubleshooting attempt, I noticed that on the X31, uhci-hcd was
> in the list of loaded kernel modules. It wasn't on the X201. I modprobed it,
> but still nothing. I rebooted the X201 to an old kernel (2.6.32-5-amd64),
> but still nothing.
>
> Just to try again, I restarted X31, plugged in the harddrive and it was
> recognized right away. I noticed that the X31 list of modules had one called
> uas in the usb system. The module uas isn't in 3.2.0-4, but is in 3.2.0-3,
> so I rebooted the X201 into kernel 3.2.0-3, modprobed uas (and uhci-hcd, for
> good measure), but still not recognizing the disk.
>
> Last, all this time, the X201 was in a docking station. I removed it,
> rebooted and tried again, but still nothing from the X201 upon connecting
> the harddrive.
>
> Any thoughts on what the problem is or how I can diagnose it?
>
> Thanks for your time!

Have you tried it on different ports?
Do other USB devices (flash drives, keyboard/mouse, etc) work in the
port(s) you are trying this disk on?
What do you get from lsusb, both plugged in and not?

Cheers,
Kelly Clowers


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