Date: Mon, 22 May 2017 14:57:00 +0200 From: Hans Petter Selasky <hps@selasky.org> To: lev@FreeBSD.org, freebsd-usb@freebsd.org Subject: Re: Ippon Back Power Pro LCD connection flickers Message-ID: <3ac65ccf-d75d-df65-df53-a0b6137b54c2@selasky.org> In-Reply-To: <2e73775f-1d81-1e09-22fe-4d46c800b157@FreeBSD.org> References: <1af248e4-50dd-8268-c378-bd5063929310@FreeBSD.org> <ca32090d-4b1d-59bc-7ea2-00836f2aa32d@selasky.org> <2e73775f-1d81-1e09-22fe-4d46c800b157@FreeBSD.org>
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Hi, On 05/22/17 14:23, Lev Serebryakov wrote: > 15:21:08.960407 usbus1.2 > DONE-INTR-EP=00000081,SPD=LOW,NFR=1,SLEN=0,IVAL=100,ERR=IOERROR What is the occurrence rate of this IOERROR? Once per attach/detach. Did you try to connect the USB device to a different port and/or USB HUB. It might also be that the user-space driver tries to reset the device when it sees this error. To figure that out you'll need to enable debugging in the UPS software package. --HPS
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