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 Mon, 22 May 2017 14:07:35 +0200 (CEST)
Subject: Re: Ippon Back Power Pro LCD connection flickers
To: lev@FreeBSD.org, freebsd-usb@freebsd.org
References: <1af248e4-50dd-8268-c378-bd5063929310@FreeBSD.org>
From: Hans Petter Selasky <hps@selasky.org>
Message-ID: <ca32090d-4b1d-59bc-7ea2-00836f2aa32d@selasky.org>
Date: Mon, 22 May 2017 14:05:36 +0200
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On 05/22/17 13:30, Lev Serebryakov wrote:
> 
>   I've bought new UPS for my router, and I'm not sure, is it UPS problem
> or FreeBSD preoblem, but it connects and disconnects every several
> seconds, like this:
> 
> May 22 14:26:28 gateway kernel: ugen1.2: <PPC Offline UPS> at usbus1
> May 22 14:26:43 gateway kernel: ugen1.2: <PPC Offline UPS> at usbus1
> (disconnected)
> May 22 14:26:48 gateway kernel: ugen1.2: <PPC Offline UPS> at usbus1
> May 22 14:27:03 gateway kernel: ugen1.2: <PPC Offline UPS> at usbus1
> (disconnected)
> May 22 14:27:08 gateway kernel: ugen1.2: <PPC Offline UPS> at usbus1
> May 22 14:27:23 gateway kernel: ugen1.2: <PPC Offline UPS> at usbus1
> (disconnected)
> May 22 14:27:28 gateway kernel: ugen1.2: <PPC Offline UPS> at usbus1
> May 22 14:27:43 gateway kernel: ugen1.2: <PPC Offline UPS> at usbus1
> (disconnected)
> May 22 14:27:48 gateway kernel: ugen1.2: <PPC Offline UPS> at usbus1
> 
>   It works (with sysutils/nut) when it is connected, but flickers!
> 
>   Is here any way to be sure, that this is UPS problem and not FreeBSD one?
> 
>   I'm running
> 

Hi,

Try dumping the traffic using "usbdump -i usbus1 -f 2 " and look for 
completion errors. Might be a bug in the USB firmware of the UPS.

--HPS