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From: Arno on 12 Jan 2010 23:14
In comp.sys.ibm.pc.hardware.storage Yousuf Khan <bbbl67(a)spammenot.yahoo.com> wrote:
> mike wrote:
>> Don't know if any of this is relevant, but...
>> I started having file transfer problems when I installed vista.
>> Network file transfers to/from XP failed randomly, but only when the file
>> being transferred exceeded ~4MB and was in the middle of a multi-file
>> transfer. Also seemed to matter which end of the pipe initiated
>> the transfer.
>> I couldn't make a vista to vista file transfer fail.

> Weird. There's apparently a new networking paradigm with Vista and 7
> than there was for XP. You need to enable some kind of compatibility
> mode to make it work with XP.

>> I've had usb file transfer failures to external drives when using the
>> front-mounted ports on my dell.
>> Hubs are a no-no.

> Good point, I just plugged the drives into whatever free ports were
> available at the time without much thought.

And that is what normaly should do. Seems MS screwed up here
somewhere and has far too little resilience in their USB stack.

Arno
--
Arno Wagner, Dr. sc. techn., Dipl. Inform., CISSP -- Email: arno(a)wagner.name
GnuPG: ID: 1E25338F FP: 0C30 5782 9D93 F785 E79C 0296 797F 6B50 1E25 338F
----
Cuddly UI's are the manifestation of wishful thinking. -- Dylan Evans
From: Yousuf Khan on 13 Jan 2010 08:47
Arno wrote:
> In comp.sys.ibm.pc.hardware.storage Yousuf Khan <bbbl67(a)spammenot.yahoo.com> wrote:
>> mike wrote:
>>> I've had usb file transfer failures to external drives when using the
>>> front-mounted ports on my dell.
>>> Hubs are a no-no.
>
>> Good point, I just plugged the drives into whatever free ports were
>> available at the time without much thought.
>
> And that is what normaly should do. Seems MS screwed up here
> somewhere and has far too little resilience in their USB stack.
>
> Arno

Well, I reran the file transfer that I was running just before the last
crash. The drives have been rearranged on the USB chain. It went through
properly this time. Not really a scientific observation, but anecdotal.
We'll see if the system stabilizes after a few more days pass.

Yousuf Khan
From: Jose on 13 Jan 2010 12:25
On Jan 13, 8:47 am, Yousuf Khan <bbb...(a)yahoo.com> wrote:
> Arno wrote:
> > In comp.sys.ibm.pc.hardware.storage Yousuf Khan <bbb...(a)spammenot.yahoo..com> wrote:
> >> mike wrote:
> >>> I've had usb file transfer failures to external drives when using the
> >>> front-mounted ports on my dell.
> >>> Hubs are a no-no.
>
> >> Good point, I just plugged the drives into whatever free ports were
> >> available at the time without much thought.
>
> > And that is what normaly should do. Seems MS screwed up here
> > somewhere and has far too little resilience in their USB stack.
>
> > Arno
>
> Well, I reran the file transfer that I was running just before the last
> crash. The drives have been rearranged on the USB chain. It went through
> properly this time. Not really a scientific observation, but anecdotal.
> We'll see if the system stabilizes after a few more days pass.
>
>         Yousuf Khan

Sorry I have no useful ideas, but it sounds like you are zeroing in on
it.
From: Arno on 13 Jan 2010 14:31
In comp.sys.ibm.pc.hardware.storage Yousuf Khan <bbbl67(a)yahoo.com> wrote:
> Arno wrote:
>> In comp.sys.ibm.pc.hardware.storage Yousuf Khan <bbbl67(a)spammenot.yahoo.com> wrote:
>>> mike wrote:
>>>> I've had usb file transfer failures to external drives when using the
>>>> front-mounted ports on my dell.
>>>> Hubs are a no-no.
>>
>>> Good point, I just plugged the drives into whatever free ports were
>>> available at the time without much thought.
>>
>> And that is what normaly should do. Seems MS screwed up here
>> somewhere and has far too little resilience in their USB stack.
>>
>> Arno

> Well, I reran the file transfer that I was running just before the last
> crash. The drives have been rearranged on the USB chain. It went through
> properly this time. Not really a scientific observation, but anecdotal.
> We'll see if the system stabilizes after a few more days pass.

Sounds good to me. Let us know. I have had to take USB ports out
of service in the past as well, but that was on an ASUS board
where they had insufficient cooling on the southbridge, and
it was not really a surprise to me that portst started giving
up after about 2 years. No more ASUS for me, they are more
expensive and their engineering sucks badly lately.

As to the damaged port, it would still support a mouse or the
like, but filetransfers resulted in device disconnects under
Linux, a bit like your situation. Incidentially, this problem
also affected the SATA port with the same number, I guess they
were arranged in SATA/USB pairs on the chip.

Arno
--
Arno Wagner, Dr. sc. techn., Dipl. Inform., CISSP -- Email: arno(a)wagner.name
GnuPG: ID: 1E25338F FP: 0C30 5782 9D93 F785 E79C 0296 797F 6B50 1E25 338F
----
Cuddly UI's are the manifestation of wishful thinking. -- Dylan Evans


From: mike on 13 Jan 2010 14:52
Arno wrote:
> In comp.sys.ibm.pc.hardware.storage Yousuf Khan <bbbl67(a)yahoo.com> wrote:
>> Arno wrote:
>>> In comp.sys.ibm.pc.hardware.storage Yousuf Khan <bbbl67(a)spammenot.yahoo.com> wrote:
>>>> mike wrote:
>>>>> I've had usb file transfer failures to external drives when using the
>>>>> front-mounted ports on my dell.
>>>>> Hubs are a no-no.
>>>> Good point, I just plugged the drives into whatever free ports were
>>>> available at the time without much thought.
>>> And that is what normaly should do. Seems MS screwed up here
>>> somewhere and has far too little resilience in their USB stack.
>>>
>>> Arno
>
>> Well, I reran the file transfer that I was running just before the last
>> crash. The drives have been rearranged on the USB chain. It went through
>> properly this time. Not really a scientific observation, but anecdotal.
>> We'll see if the system stabilizes after a few more days pass.
>
> Sounds good to me. Let us know. I have had to take USB ports out
> of service in the past as well, but that was on an ASUS board
> where they had insufficient cooling on the southbridge, and
> it was not really a surprise to me that portst started giving
> up after about 2 years. No more ASUS for me, they are more
> expensive and their engineering sucks badly lately.
>
> As to the damaged port, it would still support a mouse or the
> like, but filetransfers resulted in device disconnects under
> Linux, a bit like your situation. Incidentially, this problem
> also affected the SATA port with the same number, I guess they
> were arranged in SATA/USB pairs on the chip.
>
> Arno
Probably doesn't apply in this situation, but if the port is powering
a high power device, like a bus-powered external disk, the current limit
can fail. Some are active current limits, others are PTC resettable
fuses. If you believe the spec on a PTC "fuse", the series resistance
goes up substantially the first time it "blows".
That makes it run hotter, so takes less current to "blow".

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