Date: Fri, 13 Sep 2002 01:12:28 -0400 From: "Brian T. Schellenberger" <bts@babbleon.org> To: "Evan Dower" <evantd@hotmail.com>, freebsd-questions@freebsd.org Subject: Re: Printer Device Busy Message-ID: <200209130112.28950.bts@babbleon.org> In-Reply-To: <F139he5yMlDjF24Jr7N00006de7@hotmail.com> References: <F139he5yMlDjF24Jr7N00006de7@hotmail.com>
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On Thursday 12 September 2002 09:27 pm, Evan Dower wrote: | Please, please, please respond with something, even if it's to tell | me that this should go to a different list, maybe stable or hackers. | Please help. Thanks, | Evan Dower Try to avoid top-posting; it's against the "rules" on this list. I don't even really think that rule makes that much sense, but "when in Rome," and consistency is a virtue. Also, in the flood of issues here, I for one missed your post the first time. Next time you might want to wait a couple days, though; it's all volunteer support here and sometimes it takes a while. As for your problem. "device busy" doesn't really mean "device busy"; it really means "something's wrong and I'm not sure what." The kernel uses "device busy" as a "junk" message when it can't communicate with the device but the device isn't telling it more specifically what's wrong. (At least I'm pretty sure that's the case based on behavior I've seen; no kernel hacker I.) So really the message should probably say "unable to communicate with device" or something to that effect. As for the actual problem, I have no idea. But would, I believe, say something like "device open" if it was busy in the sense of being already open; rather, it means that the kernel thinks that the physical port is too busy to talk to it. I think. And *any* time you post to questions and you "stump the band" (after a decent interval like a couple of days), it's "fair", IMHO, to take the query over to -hackers. I think that there's a list for devices, too . . . you could check. Queries are always more likely to be answered on "specialized" lists if you can find one that fits. | | | From: "Evan Dower" <evantd@hotmail.com> | | >To: freebsd-questions@freebsd.org | >Subject: Printer Device Busy | >Date: Thu, 12 Sep 2002 10:48:37 -0700 | >MIME-Version: 1.0 | >X-Originating-IP: [12.229.158.71] | >Received: from mc3-f29.law16.hotmail.com ([65.54.236.164]) by | >mc3-s15.law16.hotmail.com with Microsoft SMTPSVC(5.0.2195.5600); | > Thu, 12 Sep 2002 10:48:55 -0700 | >Received: from mx2.freebsd.org ([216.136.204.119]) by | >mc3-f29.law16.hotmail.com with Microsoft SMTPSVC(5.0.2195.5600); | > Thu, 12 Sep 2002 10:48:54 -0700 | >Received: from hub.freebsd.org (hub.FreeBSD.org [216.136.204.18])by | >mx2.freebsd.org (Postfix) with ESMTPid 0EAC35571E; Thu, 12 Sep 2002 | >10:48:44 -0700 (PDT)(envelope-from | > owner-freebsd-questions@FreeBSD.ORG) Received: by hub.freebsd.org | > (Postfix, from userid 538)id 7E16C37B401; Thu, 12 Sep 2002 10:48:42 | > -0700 (PDT) | >Received: from localhost (localhost [127.0.0.1])by hub.freebsd.org | >(Postfix) with SMTPid 5811E2E800D; Thu, 12 Sep 2002 10:48:42 -0700 | > (PDT) Received: by hub.freebsd.org (bulk_mailer v1.12); Thu, 12 Sep | > 2002 10:48:42 -0700 | >Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125])by | >hub.freebsd.org (Postfix) with ESMTP id 301B237B400for | ><freebsd-questions@freebsd.org>; Thu, 12 Sep 2002 10:48:39 -0700 | > (PDT) Received: from hotmail.com (f101.pav1.hotmail.com | > [64.4.31.101])by mx1.FreeBSD.org (Postfix) with ESMTP id | > E59A643E6Efor | ><freebsd-questions@freebsd.org>; Thu, 12 Sep 2002 10:48:38 -0700 | >(PDT)(envelope-from evantd@hotmail.com) | >Received: from mail pickup service by hotmail.com with Microsoft | > SMTPSVC; Thu, 12 Sep 2002 10:48:38 -0700 | >Received: from 12.229.158.71 by pv1fd.pav1.hotmail.msn.com with | > HTTP;Thu, 12 Sep 2002 17:48:37 GMT | >Delivered-To: freebsd-questions@freebsd.org | >Message-ID: <F101PGDZFMp26V5AtSd000204e5@hotmail.com> | >X-OriginalArrivalTime: 12 Sep 2002 17:48:38.0900 (UTC) | >FILETIME=[A028B340:01C25A84] | >Sender: owner-freebsd-questions@FreeBSD.ORG | >List-ID: <freebsd-questions.FreeBSD.ORG> | >List-Archive: <http://docs.freebsd.org/mail/>; (Web Archive) | >List-Help: <mailto:majordomo@FreeBSD.ORG?subject=help> (List | > Instructions) List-Subscribe: | ><mailto:majordomo@FreeBSD.ORG?subject=subscribe%20freebsd-questions> | >List-Unsubscribe: | ><mailto:majordomo@FreeBSD.ORG?subject=unsubscribe%20freebsd-question | >s> X-Loop: FreeBSD.ORG | >Precedence: bulk | >Return-Path: owner-freebsd-questions@FreeBSD.ORG | > | >I am trying to install a printer (Epson Stylus Color 740), but | > FreeBSD claims that the device (/dev/lpt0) is busy. I began with | > 4.6-RELEASE but upgrade to -STABLE to see if that would fix the | > problem (it didn't). My system is: | >$ uname -a | >FreeBSD lojak.u.washington.edu 4.7-PRERELEASE FreeBSD 4.7-PRERELEASE | > #0: Thu Sep 12 00:21:06 PDT 2002 | >root@lojak.u.washington.edu:/usr/obj/usr/src/sys/CUSTOM i386 | >I even tried using the GENERIC kernel to no avail. I'm fairly | > certain my kernel is set up properly anyway since the printer is | > detected at startup. $ dmesg | >... | >ppc0: <Parallel port> at port 0x378-0x37f irq 7 on isa0 | >ppc0: SMC-like chipset (ECP/EPP/PS2/NIBBLE) in COMPATIBLE mode | >ppc0: FIFO with 16/16/9 bytes threshold | >ppbus0: IEEE1284 device found /NIBBLE | >Probing for PnP devices on ppbus0: | >ppbus0: <EPSON Stylus COLOR 740> PRINTER ESCPL2,BDC,D4 | >lpt0: <Printer> on ppbus0 | >lpt0: Interrupt-driven port | >... | >Yet still, if I try to do a test print, nothing happens. | ># echo test > /dev/lpt0 | >/dev/lpt0: Device busy. | >In fact, even just trying to get status info does the same thing. | ># cat /dev/lpt0 | >cat: /dev/lpt0: Device busy | >So the device is busy. Certainly, a program must be bogarting it. | > Yet fstat begs to differ. | >$ fstat /dev/lpt0 | >USER CMD PID FD MOUNT INUM MODE SZ|DV | > R/W NAME That's an empty list of open files named /dev/lpt0. So | > maybe fstat is not working as I would expect. So I'll stat | > /dev/lpt0 to get its INODE and grep fstat for it. | >$ stat /dev/lpt0 | > File: "/dev/lpt0" | > Size: 0 Allocated Blocks: 0 Filetype: Character Device | > Mode: (0600/crw-------) Uid: (0/root) Gid: (0/wheel) | >Device: 160768 Inode: 753 Links: 1 Device Type: 4096 | >Access: Thu Sep 12 01:01:20 2002 | >Modify: Thu Sep 12 10:44:59 2002 | >Change: Thu Sep 12 10:44:59 2002 | > | >$ fstat | grep 753 | >I swear fstat really does list open files! | >$ fstat | wc | > 557 5040 38580 | >$ fstat /dev/dsp | >USER CMD PID FD MOUNT INUM MODE SZ|DV | > R/W NAME evantd esd 32539 8 / 738 crw-rw-rw- | > dsp0.0 w /dev/dsp | >$ fstat | grep 738 | >evantd esd 32539 8 / 738 crw-rw-rw- dsp0.0 w | >So fstat does work (both ways), but I still see no reason for lpt0 | > to be busy. | >Does anyone have any ideas? What else can make a device busy? | >Thanks in advance, | >Evan Dower | > | >_________________________________________________________________ | >Send and receive Hotmail on your mobile device: | > http://mobile.msn.com | > | > | >To Unsubscribe: send mail to majordomo@FreeBSD.org | >with "unsubscribe freebsd-questions" in the body of the message | | _________________________________________________________________ | MSN Photos is the easiest way to share and print your photos: | http://photos.msn.com/support/worldwide.aspx | | | To Unsubscribe: send mail to majordomo@FreeBSD.org | with "unsubscribe freebsd-questions" in the body of the message -- Brian, the man from Babble-On . . . . bts@babbleon.org (personal) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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