From owner-freebsd-arm@freebsd.org Mon May 3 18:24:06 2021 Return-Path: Delivered-To: freebsd-arm@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 84FAF639BAB for ; Mon, 3 May 2021 18:24:06 +0000 (UTC) (envelope-from marklmi@yahoo.com) Received: from sonic314-20.consmr.mail.gq1.yahoo.com (sonic314-20.consmr.mail.gq1.yahoo.com [98.137.69.83]) (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 4FYrw53QH3z3LjJ for ; Mon, 3 May 2021 18:24:05 +0000 (UTC) (envelope-from marklmi@yahoo.com) X-SONIC-DKIM-SIGN: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1620066243; bh=caoQ7dg0ca+Ttxyi2LZf+irltetpySud2pvNJhlt4R4=; h=X-Sonic-MF:Subject:From:Date:To:From:Subject; b=ofKKY8xWmA5ajWpryabRtjhDMCE352qE6Guwast25iag8/BpKWhgoP2tkT70wAd+FTbLPnGjUY7sB64sJ8gbkvg/+1v+rAqXoSSIjpxgu7ZD/2AMzwhpyVk2cJhjBKIfKOLfqAW8VW8TlT7D6uX/BARShRCS4La723Ca1/LXMDFwBIxVsEf/SLUgFDwN13UVt7K6O/tG3xlggh42TS5EEdCSFvVzQTGotsbGxsYuuVUlKxc+IR1rpRutMle99GG4TsKxUTVGCVnMEgPKGLGyW1zD7E9D9DzFumsm6p+VfRrHeE5232TthRWBEOjH8rCngBAYvayg/nWtU9Cs6VFf/A== X-YMail-OSG: R2rv0gAVM1kbtxpr_6jbWvfL7qyfqxb1hEmR3ggat44buOZDcZs0gTizfMms2KI TJuazqInn0W9Bnz_4IJN43zrSccTTkc1zhhzWLAprKkJS1cpaBFrZUHrEU9iNZqPFHTJOir5EH7r d8Wknlk8oBWXJWhGYWQoEO1xTs1ERw9U_lalLVcAb95jmpwphIEwProY00PXt_cM3_qyDmdxfDs6 bFExiXS3h.oX6kl.RBtmDfNO21N.jL8ukqYWO_adpsvbuXZJYEglvUTw6MXc2dYuRzQaXfTwB4n0 DI4jg3D4EK2iyZ3adB4PGE88w6nzs9QSVXHvU9WXbkGnwF_OPvudprOPVnqtaZnr6arDb0XfA5dp EdeWdVPFtSagOTCUbBI9lDwgXVnKO18MRWdxj1NlKoLqSDUH4o9QiDeryV2ixUS1RPjxZlOOZwBk T1_Zq589oYNKvUBVkfPjeBTJavyO8n4OQrtMOsUfu89Nw_H_0BJu3RpomIpIVu7i5iFoc9RF0N9U 1fekk166jOINAiF7LC3IpZp54BC9pnVUqfvKut3flYPK8aKmuc7TO1rllitDCfFZIvzdS8kkf5j4 5qtYO1O0QCJ7s51g5k52beV1YjTWaPIQMaMZJJXwtpKLitOGx_h4Xs27Hywz5eGH2zPqCzVi3e5e MKFGgpiNy.b3k8LWUy0yczI674Wv.riAMvx4unKxyr2THhOU4kIz1wzFt2HFsOqwePcaNjMCOul3 fT4dpQURY7M3Oh1ws.Ay35SDKkZK234r6eocny2KqohHdEPLh5mc.lEs_w8nnAWrWOaBxSS6FT0b _7aHDkX_4LSReR2gLAVkoSQD6IfK6.464CM9Q9njMfO_hbPsCSgClmBpjzquHf5Ng2KywTzrTqzs fpY0dFDsC_lML4pUGim6yh6Wxf4kZIUcjQXoPTO2.lLD0wh2jwv1vV_6PUgY2WDcX6EU.muke4vE Fx54_FCRBWuG9cWoDuvb_xgEWW_QKcAs2hv3HyJ9WZzpmjmosaVrAs9om3_RgRZODuUTlnHoe61m QDt6v47YOyomQjoF7s4MByBiNXM2CBHX6mSj_T.d0R1gHmHSYr6SxgdNcG76m2HSblstsgb14aP0 C7KT.yUeWj9XRN7lGhSSsibYvtAWGj25NDIZn0yJmgScxEmMuAFqqfvI31dZ4Ub0oM2ZNetmr3XD D9dUAuJCTz2IJHUADiHmVSSzrINaDDvuTqlV6Hrf7rDlifEXIfyfPMm5Szi331oNP8nJHjPIGiGX N9UPYOiepFrxapmV4lO820okHQ83Ko2cSF0bFZoKSe5F83T0OTzqecuyJV_zUOJuN9E7oeiybfvA 0D8iiq.wEF642OTx1gr3NhHrACUu.lllulMVEk27ZQ0JQz.ZvblnUqQ.zD3nwy_yAjYj255NiSua OTzemjO1LfXYBcDfu3jZhpOfSdnv6qYVCbcQYhcyX7Gu8AHOtHLUVQ9G7uNzU8oTxcxpnimep0Fy TXycMqasrGD55nA5d21IeUO24vmyAmuB0R8gmL7H7E8TdJiyFbnQxRk_FRn398bAdMdxa7NyY5y_ cToF3dWoP25cbZHJnyvjs1oYyRwUHcVe651h8W.qBxKZqC2ivc8XAMLMpYXFUTMpiS2IgRy16RxQ EZgoMri_idPiZH2ES_mSUFqrjNUTQX4XG3Pp41Jffhq0bMq.jQcRiaSWt3amT7QOq93x6KCuWJJo nnULMOMOtx2694nEFYsHzDmRR1rAo3NuZhWnfFmE5tqDQb6Xc92mnYLYicAzN8EhjVFKxQRpN.4b xQkEbMRSpAOse0evJMmNzxvBgeWlNBwyZwP1BeNfXMaT_yqs5WnqKAAa7cIOK.d5_.n2Hn5TqIOB 4r2VfAhsmzaYEkDLj3zBdpKuhJ4E5XImN.j6.nabZ3iWeMt.985iB1VMZ416J56lJ8BoxI7.OEco 2zuQfLKaGqP8ZmJ0pNVb0vU5t6S_fj5D5Sjan3NZYcMY7Tw.Nco3_920br8XxpEWN.WbmvtihRRV 4v_2logJo36.lS_My5cQqXFbsYsiZxZHYve4aQeWyMeHEftQpwXtRuwnaV7YlLzJ.YC72cvVOzwJ bA_MsRJ1rf7mErBqQSmcKvyhNrEKOToDn5AZDUTuGNfqBW_n0E7aZsQqdDmh_sc8qc7_hnQvidW5 oanOIxzwYHRGCJmYW6qafPh_Ec.4TtnXmgHWemDL0Jp8uF_m_bznOhjGvDk.0uWtcyzT8NSpwwRg KuL4n6FiiHrxxSvBzSeYs9xzaScMMFjtj2nWvjtB28JnZl9xSN9P5b3hMq8Ks7cSfNb1.NNSkiys GXgAWiAVoU_8s4GhrPkEyaoMseJFJfH6TGHdz3ily7oLjhJfleEoRJbVwc35ghljyXLCuZPe_IjN Lml0y0Pr0I6oxdYWSWki6VQ8IxlawTHWFJj9GpNaWz5UQTvbURFJLlmdzAOEIszkHpobLXQk7pn. YjyoGYpZ49sKGN.r8MjT31PROyuKdNZqdTqp_lAnZJPlmDJtR6_FBuFgV6k3BUMtB X-Sonic-MF: Received: from sonic.gate.mail.ne1.yahoo.com by sonic314.consmr.mail.gq1.yahoo.com with HTTP; Mon, 3 May 2021 18:24:03 +0000 Received: by kubenode565.mail-prod1.omega.gq1.yahoo.com (VZM Hermes SMTP Server) with ESMTPA ID 1e216e78a0b998c2acc950ac8107d879; Mon, 03 May 2021 18:24:02 +0000 (UTC) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 14.0 \(3654.60.0.2.21\)) Subject: Re: Timezone problems on -current From: Mark Millard In-Reply-To: <20210503153442.GB37236@www.zefox.net> Date: Mon, 3 May 2021 11:24:02 -0700 Cc: freebsd-arm@freebsd.org Content-Transfer-Encoding: 7bit Message-Id: <3E0512C0-7667-44C4-B64B-501783C5B210@yahoo.com> References: <20210503153442.GB37236@www.zefox.net> To: bob prohaska X-Mailer: Apple Mail (2.3654.60.0.2.21) X-Rspamd-Queue-Id: 4FYrw53QH3z3LjJ X-Spamd-Bar: --- X-Spamd-Result: default: False [-3.50 / 15.00]; TO_DN_SOME(0.00)[]; FREEMAIL_FROM(0.00)[yahoo.com]; MV_CASE(0.50)[]; R_SPF_ALLOW(-0.20)[+ptr:yahoo.com]; DKIM_TRACE(0.00)[yahoo.com:+]; RCPT_COUNT_TWO(0.00)[2]; DMARC_POLICY_ALLOW(-0.50)[yahoo.com,reject]; NEURAL_HAM_SHORT(-1.00)[-1.000]; 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:98.137.64.0/20, country:US]; MID_RHS_MATCH_FROM(0.00)[]; DWL_DNSWL_NONE(0.00)[yahoo.com:dkim]; ARC_NA(0.00)[]; RBL_DBL_DONT_QUERY_IPS(0.00)[98.137.69.83:from]; R_DKIM_ALLOW(-0.20)[yahoo.com:s=s2048]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; FROM_HAS_DN(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; MIME_GOOD(-0.10)[text/plain]; SPAMHAUS_ZRD(0.00)[98.137.69.83:from:127.0.2.255]; TO_MATCH_ENVRCPT_SOME(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[98.137.69.83:from]; RWL_MAILSPIKE_POSSIBLE(0.00)[98.137.69.83:from]; RCVD_COUNT_TWO(0.00)[2]; MAILMAN_DEST(0.00)[freebsd-arm] X-BeenThere: freebsd-arm@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Porting FreeBSD to ARM processors List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 03 May 2021 18:24:06 -0000 On 2021-May-3, at 08:34, bob prohaska wrote: > It seems that the timezone gets screwed up each time the OS is > upgraded on a Pi4 via sources on -current. ntpdate is working, but the > machine reports a local time of > bob@nemesis:~ % date > Mon May 3 15:27:04 PDT 2021 > while a Pi2 reports > fbsd@www:~ % date > Mon May 3 08:28:35 PDT 2021 > > The timezone is PDT in both cases, but the time shown looks like > UTC for the Pi4 but PDT for the Pi2. Note: I assume that neither RPi* has a RTC, not that it makes much of a difference here. I expect that one RPi* has a file: # ls -Tld /etc/wall_cmos_clock -r--r--r-- 1 root wheel 0 Aug 8 01:49:01 2017 /etc/wall_cmos_clock and the other does not. QUOTE ( from https://www.freebsd.org/cgi/man.cgi?adjkerntz(8) ) . . . . . . If the file /etc/wall_cmos_clock exists, it means that the CMOS clock keeps local time (MS-DOS and MS-Windows compatible mode). If that file does not exist, it means that the CMOS clock keeps UTC time. . . . /etc/wall_cmos_clock Empty file. Its presence indicates that the ma- chine's CMOS clock is set to local time, while its absence indicates a UTC CMOS clock. END QUOTE However, it has an effect on time handling even when no RTC (no CMOS clock) is present. If you want times to look right on ms-dos and Windows for the msdos file system involved, you then want to boot and synchronize time with /etc/wall_cmos_clock present. Otherwise you likely do not want /etc/wall_cmos_clock present for such activities. If you want times to closely agree, all RPi*'s should have the same /etc/wall_cmos_clock status, which ever way you go. There can be an issue of time going backwards, depending on the delete vs. add action for /etc/wall_cmos_clock . > I've noticed this before and cured it for a while by running tzsetup. > The problem seems to return each time the OS is upgraded, though I > have not kept careful track of what's going on. Anybody else noticed > this? === Mark Millard marklmi at yahoo.com ( dsl-only.net went away in early 2018-Mar)