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List:       owfs-developers
Subject:    Re: [Owfs-developers] FTDI problem on pi
From:       Colin Law <clanlaw () gmail ! com>
Date:       2017-03-03 22:22:24
Message-ID: CAL=0gLv2ZB1pBZh+RYY9HDfqBmDyj+Zme_dmLL58-1JiZgD10w () mail ! gmail ! com
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It certainly could be a hardware issue. Possibly PSU or the linkUSB or
something else. The fact that it fails so infrequently is unusual
though, for hardware or software.


Colin

On 3 March 2017 at 22:18, Stefano Miccoli <mocme@icloud.com> wrote:
> Just for info, I run a similar system, but I do not have any problem. My setup is:
>
> Raspberry Pi Model B Rev 2
> LinkUSB, HW rev. E3
>
> Raspbian GNU/Linux 8.0 (jessie)
> Linux 4.4.38+ #938 Thu Dec 15 15:17:54 GMT 2016
> owserver 2.9p8-6
>
> I would suggest to check the power supply.
>
> Stefano
>
>> On 3 Mar 2017, at 17:48, Jan Kandziora <jjj@gmx.de> wrote:
>>
>> Am 03.03.2017 um 14:44 schrieb Colin Law:
>>>
>>> I too had expected to see messages about the usb device being
>>> disconnected, or something similar, but there is nothing.
>>>
>> Okay. Then we are a bit lost.
>>
>> There is nothing we can do about this from OWFS. It's a USB problem.
>>
>>
>>> I don't know whether it may be relevant but I have a udev rule to map
>>> the device to /dev/linkUSB but there is no mention of this anywhere in
>>> the log, as far as I can see.
>>>
>> Please try updating the kernel. Maybe there was a bug in ftdi_sio.
>>
>> Kind regards
>>
>>       Jan
>>
>>
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