Date: Sat, 1 Jun 1996 20:17:46 -0300 (EST) From: "Lenzi, Sergio" <lenzi@cwbone.bsi.com.br> To: Marc van Kempen <marc@bowtie.nl> Cc: hackers@freebsd.org Subject: Re: Problems with serial port Message-ID: <Pine.BSF.3.91.960601201424.1500A-100000@lenzi> In-Reply-To: <199605310633.IAA01146@nietzsche.bowtie.nl>
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On Fri, 31 May 1996, Marc van Kempen wrote: > > Hi, > > I'm having a problem with sendfax (from mgetty 0.99) hanging in a > ttywait (used ps auxl). This seems to happen to me after the machine > has been up for a longer period (19 days in this case, it also > happened a while back. The machine had been up for a similar period). > > I don't seem to able to get out of it, short of rebooting. This is > on a -stable kernel from a while back, rest is 2.1. > > Is there any other solution to remove the proces and free the > serial port, other than rebooting and is this perhaps a hardware > problem? (Whenever I reboot, the problem is immediately gone.) > > Regards, > Marc. The problem seems to happen when the fax disconnects and the modem sends erratic data to the port, causing it to hang. (i have experienced this whith modems in a kermit program). Solution: use the comcontrol command and the drainwait options. ex: comcontrol /dev/cuaa1 drainwait 20 In my system the port returns to normal state in 20 seconds. Hope this will help.>
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