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

Mark Lord
2010-04-20T04:31:09Z

On 19/04/10 08:25 PM, Mark Lord wrote:
> On 19/04/10 05:15 PM, Sarah Sharp wrote:
>> Updated description
>> -------------------
>>
>> Summary:
>>
>> The Buffalo USB3 hard drive fails to mount after being sent an ATA_16
>> IDENTIFY command. It does not fail when the device is connected via a
>> USB 2.0 cable and the same command is sent.
>>
>> Details:
>>
>> There seems to be an issue with how the Buffalo USB3 hard drive handles
>> the SCSI ATA pass through commands. We found this issue with the Linux
>> userspace program hdparm, using the Ubuntu Linux Karmic distribution.
>> The device responds correctly to an IDENTIFY DEVICE via the ATA_12
>> tunnel, but it responds with a Phase Error when it's sent an IDENTIFY
>> DEVICE via the ATA_16 tunnel, and then stalls.
> ..
>
> I hsven't gone away or anything -- still reading mostly every word of
> this thread.
> I haven't done anything further here because I really don't understand
> the whole story. Sarah's latest summary (above) helps a lot, though.
>
> But I'm not sure what, if anything I (hdparm) can do differently to help
> here.
>
> Can anyone out there send me one of these gadgets?
>
> Oh wait.. that wouldn't be terribly useful, I suppose,
> since I also don't have any newfangled USB3 host gear.
..

Okay, apparently the shop around the corner has some $25 USB3 interface boards
for PCIe, and also some for ExpressCard on my notebooks.

Now I just need one of the buggy USB3/SATA bridges to test/debug with.
I'm not willing to spend much of my own money on something known to be buggy though.
Anyone out there got one they could loan?

Cheers
--
Mark Lord
Real-Time Remedies Inc.
mlord@pobox.com