From owner-freebsd-hackers Mon Oct 14 23:36:38 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id XAA05021 for hackers-outgoing; Mon, 14 Oct 1996 23:36:38 -0700 (PDT) Received: from godzilla.zeta.org.au (godzilla.zeta.org.au [203.2.228.19]) by freefall.freebsd.org (8.7.5/8.7.3) with ESMTP id XAA05016 for ; Mon, 14 Oct 1996 23:36:35 -0700 (PDT) Received: (from bde@localhost) by godzilla.zeta.org.au (8.7.6/8.6.9) id QAA30156; Tue, 15 Oct 1996 16:31:59 +1000 Date: Tue, 15 Oct 1996 16:31:59 +1000 From: Bruce Evans Message-Id: <199610150631.QAA30156@godzilla.zeta.org.au> To: devet@adv.IAEhv.nl, freebsd-hackers@FreeBSD.org Subject: Re: Direct UUCP stopped working but UUCP via PPP still works Sender: owner-hackers@FreeBSD.org X-Loop: FreeBSD.org Precedence: bulk >I recently bought a new PC and upgraded from 2.1.0 to 2.1.5 at the same >time. Everything kept working fine except for UUCP transfers directly over >the modem: I get an enormous amount of checksum errors. >Does anybody recognize these symptoms? Is it a hardware problem? If yes, >why do I only see it with direct UUCP and not with UUCP over TCP/IP? Yes. Yes. Because uucp calls tcsetattr() a lot, and the buggy hardware loses sync when the speed is set (even to the same value) while data is arriving. Sync is not regained until data stops arriving. Fixed (mostly) in -current by not setting the speed if the speed hasn't changed. Bruce