From owner-freebsd-ppc@freebsd.org Sun May 5 22:35:31 2019 Return-Path: Delivered-To: freebsd-ppc@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 9DD0C159740B for ; Sun, 5 May 2019 22:35:31 +0000 (UTC) (envelope-from marklmi@yahoo.com) Received: from sonic304-25.consmr.mail.gq1.yahoo.com (sonic304-25.consmr.mail.gq1.yahoo.com [98.137.68.206]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 97A9273C53 for ; Sun, 5 May 2019 22:35:29 +0000 (UTC) (envelope-from marklmi@yahoo.com) X-YMail-OSG: Tj4X8j8VM1mkvXEpIIJp4PHCNjTD0EIPdANMCYcVc90jxx36oWsmw2k4yXRDe8e njlq4N9ynGqa0ZMSgMHZH8ACB8O.OCZP2HquPiO5L.HEWkP1.yaheWmWz5gZg2ZcDLJwUN78VbkL FKRMJyrvBtAi1cam084rw4rneLp2FE3wHMxC0T6vQUDh5LEfOtWb4sZ3iPy2zN.gZPEwJFV3H1iU DLhrtktFXeTkKNCTVxWS2WzdiOw72DDyMyfVOPiC5WffLwOtAPvdzAuTphMnwGrpaF5yl9GR84UZ RlcYGQF2iYxHXobX4ROyLfRDsMLoTSXP6YeNUe7wP7K4NIwW_OW.VAwpy7YK3k2Cv._AnJmm_g44 dSVYCfzo73QxcDO5GqkHp1pjsoI1Lny2nLAUpXJfHj1nzA98ZxWJnaAgmA39okJpFHMKmoapEsZW WOK8uUS1gefnDcKAwLiWHwPyhrxeXYvwmagxXsvOSAxGyjoiH771cVIIOIvXU9G0xuzIpibw7PmY t0EjwBVd8PhqsE5bVqAI_89effOkzUbbRmHlkRY4gkdy6_ZDqgrnAxe6DMYtSyW7yYGKjjillXbS Zrmp3H8XHux1JXoz16P_bnESzaN66cp.jrNGoUuxUytF7NfJ4avYw9leT4kweIuo0eWvVzeRrCFV qxirldFENH.i7V0KSpslTGCtUwEL2vkRR4Ez7712aDvKu9Vquo43kacEjuB2PNM8lk3VRVDxFVOF 1W9WysoporlBen2fpgAmPrAUZOoMpuYOF1Nd0.dboD6aTK2I6qFeugsh7t1tkk2InhbCRj6sJphd CjonwrzmT9siINMQMSiXF0x6crQZ03fG_YGIxh2LYU3UkbsMUWPo64X6JECJySD1hNYOIjyF8Tgh OEWh_7sAIPhAUuffVwVT1Fy6l1qAdtVTGN5DFkkd0EMElhApjeTOeliCu.5ofHqJFzKLbV5sQoZG aYDsmEtt1LMRmKSQBXGld37q3lyiIewxpw63_TQeESvkKuzt8_HHg1Qc6Jzf4xSnF.Ealszp9llZ xfXSeV2zDNnf_YM3C4xJC29QSmkWPL_uQqNKDwy4ThvINnA6WjSh_Dj5mqKMpBvtj722ux2DgBea f35bboz4cMSnfi9Lv7ZWcEhbHuCNM12zYDyNNJQASrMgjk_TMGQnOXerCypBBXFb4dXn9BXdZbmF MiQ-- Received: from sonic.gate.mail.ne1.yahoo.com by sonic304.consmr.mail.gq1.yahoo.com with HTTP; Sun, 5 May 2019 22:35:21 +0000 Received: from c-76-115-7-162.hsd1.or.comcast.net (EHLO [192.168.1.103]) ([76.115.7.162]) by smtp406.mail.gq1.yahoo.com (Oath Hermes SMTP Server) with ESMTPA ID f5197ecfe8b9dc06fd6eea09f6d49b2f; Sun, 05 May 2019 22:25:13 +0000 (UTC) From: Mark Millard Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 (Mac OS X Mail 12.4 \(3445.104.8\)) Subject: Remote Firewire dcons use shows my G5 "hang-up point" reports have been wrong: shows lines not shown on the problem context's display Message-Id: Date: Sun, 5 May 2019 15:25:12 -0700 To: Justin Hibbits , FreeBSD PowerPC ML X-Mailer: Apple Mail (2.3445.104.8) X-Rspamd-Queue-Id: 97A9273C53 X-Spamd-Bar: ++ X-Spamd-Result: default: False [2.76 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; R_SPF_ALLOW(-0.20)[+ptr:yahoo.com]; MV_CASE(0.50)[]; FREEMAIL_FROM(0.00)[yahoo.com]; RCVD_COUNT_THREE(0.00)[3]; TO_DN_ALL(0.00)[]; DKIM_TRACE(0.00)[yahoo.com:+]; MX_GOOD(-0.01)[cached: mta6.am0.yahoodns.net]; RCPT_COUNT_TWO(0.00)[2]; DMARC_POLICY_ALLOW(-0.50)[yahoo.com,reject]; FREEMAIL_TO(0.00)[gmail.com]; FROM_EQ_ENVFROM(0.00)[]; RCVD_TLS_LAST(0.00)[]; MIME_TRACE(0.00)[0:+]; FREEMAIL_ENVFROM(0.00)[yahoo.com]; ASN(0.00)[asn:36647, ipnet:98.137.64.0/21, country:US]; MID_RHS_MATCH_FROM(0.00)[]; DWL_DNSWL_NONE(0.00)[yahoo.com.dwl.dnswl.org : 127.0.5.0]; ARC_NA(0.00)[]; R_DKIM_ALLOW(-0.20)[yahoo.com:s=s2048]; FROM_HAS_DN(0.00)[]; NEURAL_SPAM_SHORT(0.72)[0.718,0]; MIME_GOOD(-0.10)[text/plain]; IP_SCORE(1.29)[ip: (4.92), ipnet: 98.137.64.0/21(0.87), asn: 36647(0.70), country: US(-0.06)]; NEURAL_SPAM_MEDIUM(0.72)[0.721,0]; TO_MATCH_ENVRCPT_SOME(0.00)[]; NEURAL_SPAM_LONG(0.55)[0.549,0]; RCVD_IN_DNSWL_NONE(0.00)[206.68.137.98.list.dnswl.org : 127.0.5.0] X-BeenThere: freebsd-ppc@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Porting FreeBSD to the PowerPC List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 05 May 2019 22:35:32 -0000 I got remote FireWire dcons use going (partially), = https://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kern= eldebug-dcons.html # more /mnt/boot/loader.conf hw.firewire.phydma_enable=3D1 hw.firewire.dcons_crom.force_console=3D1 #dcons_gdb=3D1 #boot_multicons=3D"YES" [Trying to turn on boot_multi_cons gets stuck at db> prompts *very* early and the display on the target ends up with mixed material from two streams of output. So: no use of dcons for low level console activity.] The above combination does show output on the remote, observing PowerMac, during part of the boot sequence. And . . . It shows more lines of output just before the overall hang-up than the target machine's display does. It appears that for most or all the hang-ups that I've reported, my report indicated a point earlier then the actual hang-up: more of the messages were actually generated and the code got farther than I knew. So there might be a separate issue of the screen display stopping its updates before the old PowerMac G5 has actually hung-up (overall). Or it my just be timing relationships do not get a chance to allow the "next screen update" or some such. It appears that tracking down hang-up points via print messages shown on the normal display can not generally be done on the G5s. FireWire dcons use may be required (unless there is some alternative). I'll note that I was not able to break into ddb via the dcons connection. It appeared that I had no ability to input to the target if I had no such on the directly-connected usb keyboard at the same time. In other words: I gained no control but got better observational data. FYI: I used (replacing ??'s with appropriate hexadecimal digits): dconschat -e \# -br -TC 5555 -t ??-??-??-??-??-??-??-?? & telnet localhost 5555 on the observing PowerMac. (I happened to use a G4 as the observer of the target G5.) =3D=3D=3D Mark Millard marklmi at yahoo.com ( dsl-only.net went away in early 2018-Mar)