From mboxrd@z Thu Jan 1 00:00:00 1970 From: James Carlson Date: Wed, 20 Jan 2010 12:25:58 +0000 Subject: Re: pppd hangs on SIGHUP Message-Id: <4B56F656.70407@workingcode.com> List-Id: References: <8D.DA.01403.892965B4@cdptpa-omtalb.mail.rr.com> In-Reply-To: <8D.DA.01403.892965B4@cdptpa-omtalb.mail.rr.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ppp@vger.kernel.org Leslie Rhorer wrote: > nothing whatsoever. The only way (of which I know) to release the terminal > (/cev/ttyACM0) is to send a SIGKILL. After doing so, /dev/ttyACM0 is > released, and I can use a utility such as minicom to access the modem. I > can dial out and get a carrier. I can see the ppp authentication request > from the ISP. What I cannot do, however, is get pppd to come back up. If I > start pppd again, it opens the /dev/ttyACM0 device and creates the lockfile, > but it does not attempt to run chat or evidently do anything else other than > refresh the lockfile if it is stale. My only option at that point is to If you attach a debugger to it, can you find out where it's stuck? (Or at least run "pstack `pgrep pppd`"?) The symptoms sound like a kernel bug, but it's hard to tell. -- James Carlson 42.703N 71.076W