From owner-freebsd-usb@freebsd.org Thu May 6 16:12:50 2021 Return-Path: Delivered-To: freebsd-usb@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 5A6866269B6 for ; Thu, 6 May 2021 16:12:50 +0000 (UTC) (envelope-from lev@FreeBSD.org) Received: from smtp.freebsd.org (smtp.freebsd.org [96.47.72.83]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "smtp.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4FbdsG2BCCz4qQy for ; Thu, 6 May 2021 16:12:50 +0000 (UTC) (envelope-from lev@FreeBSD.org) Received: from onlyone.not-for.work (onlyone.not-for.work [148.251.9.81]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) (Authenticated sender: lev/mail) by smtp.freebsd.org (Postfix) with ESMTPSA id 28C542B51A for ; Thu, 6 May 2021 16:12:50 +0000 (UTC) (envelope-from lev@FreeBSD.org) Received: from [192.168.134.16] (unknown [94.19.224.8]) (Authenticated sender: lev@serebryakov.spb.ru) by onlyone.not-for.work (Postfix) with ESMTPSA id 46C223B08 for ; Thu, 6 May 2021 19:12:48 +0300 (MSK) To: freebsd-usb@freebsd.org Reply-To: lev@FreeBSD.org From: Lev Serebryakov Subject: Flickering connection to UPS (again, but now I'm sure it is Ok under Windows) Organization: FreeBSD Message-ID: Date: Thu, 6 May 2021 19:12:47 +0300 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.10.1 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-usb@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: FreeBSD support for USB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 06 May 2021 16:12:50 -0000 And one more UPS has rock-stable connection and flicker (connect/disconnect loop with period about 3 seconds) on FreeBSD. Yes, I've reported this problem already, but then it was decided, that UPS is defective. Now, I've checked with 3 different USB debugging tools on Windows 10 notebook, that it doesn't disconnect from Windows host. And it flicker on FreeBSD systems. Looks like, we need some quirk for this class of devices. I could collect logs on FreeBSD and Windows, but I don't know what to compare and where to look. -- // Lev Serebryakov