ahci0.4: Transient Errors: 40<PCS> (7)

Mohammad BadieZadegan mbzadegan at gmail.com
Wed Jul 1 03:25:04 PDT 2015

Oh my god!!
This Error was never notified me when I disconnected the USB WiFi doungle!
But my notebook need USB WiFi doungle because its WiFi interface is not
recognise by DF-BSD!
How can I Resolve my problem?

On Wed, Jul 1, 2015 at 12:32 PM, Mohammad BadieZadegan <mbzadegan at gmail.com>

> Thanks Dear Matthew Dillon,
> When I turn on my notebook and before Login this message was appeared
> every 20 seconds!
> I wonder that why this warning only reported by DragonflyBSD and did not
> reported by other BSDs.
> Thanks alot for your Help.
> On Tue, Jun 30, 2015 at 8:20 PM, Matthew Dillon <dillon at backplane.com>
> wrote:
>> If you get PCS errors during moderate or heavy disk I/O it means there is
>> probably too much electrical cross talk or noise on the SATA link.
>> Probably a cabling issue.  Either the cable is not shielded or the cable is
>> going through an enclosure connector and not directly connected to the
>> drive.  Sometimes sub-stanadard motherboards have cross talk on the traces
>> (though it is rare).  Sometimes sub-standard hot-swap bay enclosures have
>> similar issues. More likely the cable is not shielded.  If it is a mobo
>> issue you can try connecting the cable to a different SATA connector.
>> Transient PCS errors are fairly serious if they occur at times other than
>> when you are inserting or removing a drive from a hot swap bay.
>> -Matt
>> On Tue, Jun 30, 2015 at 5:38 AM, Mohammad BadieZadegan <
>> mbzadegan at gmail.com> wrote:
>>> Hi everybody,
>>> I installed DF-BSD 4.2.0 and while I standby or installing any tools the
>>> message of *ahci0.4: Transient Errors: 40<PCS> (7)* notify me more
>>> times!
>>> What's the matter? If no problem how can I disable that?
>>> Thanks.
> --
> [image: See you on my WEB] <http://933k.ir>

[image: See you on my WEB] <http://933k.ir>
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