From nobody Tue Dec 26 01:06:59 2023 X-Original-To: freebsd-arm@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4Szc7S076Mz55FFC for ; Tue, 26 Dec 2023 01:07:16 +0000 (UTC) (envelope-from ticso@cicely7.cicely.de) Received: from raven.bwct.de (raven.bwct.de [IPv6:2a02:21e0:16e0:fe::101:1]) (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 (2048 bits) client-digest SHA256) (Client CN "raven.bwct.de", Issuer "raven.bwct.de" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4Szc7R46Bjz3cYD for ; Tue, 26 Dec 2023 01:07:15 +0000 (UTC) (envelope-from ticso@cicely7.cicely.de) Authentication-Results: mx1.freebsd.org; none Received: from mail.cicely.de (mail.cicely.de [IPv6:2a02:21e0:16e0:20fe:0:0:101:c]) by raven.bwct.de (8.15.2/8.15.2) with ESMTPS id 3BQ170QL037364 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=FAIL); Tue, 26 Dec 2023 02:07:02 +0100 (CET) (envelope-from ticso@cicely7.cicely.de) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cicely.de; s=default; t=1703552822; bh=mIBsbNICy3iIFmiWDFZl0VoYEZ/RoJa6ulK2Fq9msCE=; h=Date:From:To:Cc:Subject:Reply-To:References:In-Reply-To; b=bmkK5ilb/X1c3eFRCUw6h0nP7zWbhX1C1LBTMjIMEIjEEX8m1bQ917QfQT35/RbiT lDRHY4Us4rYbAdXtTznj97mhdtPFXv7S7qUL8nRyEGMMJSAxSj4xBAEJ1+5gyk01p9 FbX1VhMsJXtHguWSf4vTUJsuB3M/qs+9LL/iSwaM= Received: from cicely7.cicely.de (c7-old.cicely.de [IPv6:2a02:21e0:16e0:20fe:0:0:101:d]) by mail.cicely.de (8.16.1/8.16.1) with ESMTPS id 3BQ16xTF001131 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Tue, 26 Dec 2023 02:06:59 +0100 (CET) (envelope-from ticso@cicely7.cicely.de) Received: from cicely7.cicely.de (localhost [127.0.0.1]) by cicely7.cicely.de (8.17.1/8.17.1) with ESMTP id 3BQ16xvJ039705; Tue, 26 Dec 2023 02:06:59 +0100 (CET) (envelope-from ticso@cicely7.cicely.de) Received: (from ticso@localhost) by cicely7.cicely.de (8.17.1/8.17.1/Submit) id 3BQ16x21039704; Tue, 26 Dec 2023 02:06:59 +0100 (CET) (envelope-from ticso) Date: Tue, 26 Dec 2023 02:06:59 +0100 From: Bernd Walter To: Marcin Cieslak Cc: bob prohaska , ticso@cicely.de, freebsd-arm@freebsd.org Subject: Re: USB-serial adapter suggestions needed Message-ID: Reply-To: ticso@cicely.de References: <16864054-4os0-pq3p-7qp0-7299666908os@fncre.vasb> <55q37289-ss30-nq9o-7r31-086n999p394s@fncre.vasb> List-Id: Porting FreeBSD to ARM processors List-Archive: https://lists.freebsd.org/archives/freebsd-arm List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-arm@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <55q37289-ss30-nq9o-7r31-086n999p394s@fncre.vasb> X-Operating-System: FreeBSD cicely7.cicely.de 13.2-RELEASE-p3 amd64 X-Rspamd-Server: rspamd.fizon.de X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN(0.00)[asn:44700, ipnet:2a02:21e0::/32, country:DE] X-Spamd-Bar: ---- X-Rspamd-Queue-Id: 4Szc7R46Bjz3cYD On Tue, Dec 26, 2023 at 12:02:50AM +0000, Marcin Cieslak wrote: > On Sun, 24 Dec 2023, bob prohaska wrote: > > > I do see what looks like noise on the serial lines, but only after a spontaneous > > disconnect and only with FTDI adapters. When the serial connections are working > > nothing resembling noise is seen. > > How does that noise look like? If the tip process was stopped by the ssh disconnect then the uart will fall back to its default bps rate. Some USB uarts still buffer received data in the chip itself, with the wrong bps rate. > Did you try to run respective sshd daemons in the debug mode to log disconnects > and possible their reason? -- B.Walter https://www.bwct.de Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.