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Hermes SMTP Server) with ESMTPA ID 3e22239a76735088df2f864dac9c038f; Sat, 28 Oct 2023 17:32:04 +0000 (UTC) Content-Type: text/plain; charset=us-ascii 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 (Mac OS X Mail 16.0 \(3774.200.91.1.1\)) Subject: Re: Stable/14 dropping ssh connections to FT232 usb-serial adapter From: Mark Millard In-Reply-To: Date: Sat, 28 Oct 2023 10:31:53 -0700 Cc: freebsd-arm@freebsd.org Content-Transfer-Encoding: 7bit Message-Id: <33D1AACD-62FB-444A-868C-B8DE92A7BF50@yahoo.com> References: To: bob prohaska X-Mailer: Apple Mail (2.3774.200.91.1.1) X-Spamd-Result: default: False [-3.50 / 15.00]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; NEURAL_HAM_SHORT(-1.00)[-0.996]; DMARC_POLICY_ALLOW(-0.50)[yahoo.com,reject]; MV_CASE(0.50)[]; R_DKIM_ALLOW(-0.20)[yahoo.com:s=s2048]; R_SPF_ALLOW(-0.20)[+ptr:yahoo.com]; MIME_GOOD(-0.10)[text/plain]; FROM_HAS_DN(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; TO_MATCH_ENVRCPT_SOME(0.00)[]; ARC_NA(0.00)[]; MLMMJ_DEST(0.00)[freebsd-arm@freebsd.org]; RCVD_IN_DNSWL_NONE(0.00)[98.137.68.31:from]; DWL_DNSWL_NONE(0.00)[yahoo.com:dkim]; ASN(0.00)[asn:36647, ipnet:98.137.64.0/20, country:US]; RWL_MAILSPIKE_POSSIBLE(0.00)[98.137.68.31:from]; DKIM_TRACE(0.00)[yahoo.com:+]; FREEMAIL_FROM(0.00)[yahoo.com]; TO_DN_SOME(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; RCPT_COUNT_TWO(0.00)[2]; RCVD_TLS_LAST(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; FREEMAIL_ENVFROM(0.00)[yahoo.com]; MIME_TRACE(0.00)[0:+]; RCVD_COUNT_TWO(0.00)[2] X-Rspamd-Queue-Id: 4SHmn40jfrz3bq6 X-Spamd-Bar: --- On Oct 26, 2023, at 07:42, bob prohaska wrote: > On Fri, Sep 29, 2023 at 11:12:00AM -0700, bob prohaska wrote: >> A stable/14 install on a Pi2 v1.1 (armv7) host seems to >> work quite well, apart from dropping ssh connections when >> used to run a cu or tip session to an FT232 usb-serial >> adapter. Ssh connections to interactive shells seem to >> remain up indefinitely, but drop within a couple of hours >> (between the same hosts) when used to run cu or tip. > > Now that ucom supports debugging at the USB end of the > connection a little more information is offered. At the > armv7 USB end of the link the console reports: > > login: ucom_inwakeup: tp=0xd6c38800 > ucom_inwakeup: tp=0xd6c38800 > ucom_inwakeup: tp=0xd6c38800 > ucom_inwakeup: tp=0xd6c38800 > ucom_inwakeup: tp=0xd6c38800 > ucom_inwakeup: tp=0xd6c38800 > ucom_inwakeup: tp=0xd6c38800 > ucom_inwakeup: tp=0xd6c38800 > ucom_inwakeup: tp=0xd6c38800 > ucom_close: tp=0xd6c38800 > ucom_shutdown: > ucom_dtr: onoff = 0 > ucom_line_state: on=0x00, off=0x01 > ucom_rts: onoff = 1 > ucom_line_state: on=0x02, off=0x00 > ucom_cfg_close: To me this just looks like the process using ucom for this just quit using it for this, closing the use down in a normal manor. The question likely becomes what is going on in that more overall context. It would be good to figure out what sequence initiated what lead to ucom_close, not that I've a clue for a good way to get that information. I've not seen anything that I'd guess to be an error visible via the USB messages. (But I'm no expert.) === Mark Millard marklmi at yahoo.com