It seems my problem is in the buffer of the serial getting an overflow of data it can't handle. How could I fix this?
It's a PCMCIA modem, and the hardware flow control won't work. Disabling it and enabling the software one, Xon/Xoff, solves partially the problem. Partially, because soetimes the transfer freezes as with the hardware flow control. So, it's not a stable solution. I could maybe just buy a new one. But I'd like to know if the problem is really the PCMCIA, in which case buying a new one is sensible, or if it's some other hardware in my laptop which will make the same problem appear regardless which modem I slot in. Thanks, ALberto Bigazzi -/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/ Alberto Bigazzi, PhD. Research Associate, Dept. of Mathematics, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano (ITALY) -/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/ Phone: +39-02-2399 4508 Fax: +39-02-2399 4568 email: [EMAIL PROTECTED] http://www1.mate.polimi.it/~albbig -/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/ On Mon, 25 Jun 2001, Alberto Bigazzi wrote: > > Dear all, > > I have a very nasty problem: I can't upload files from my machine. > > I'm connected to the Internet via an ordinary dialup (ppp). All goes > smooth, I can navigate and work remotely via telnet or ssh. > I'm running a potato 2.2r0 on a laptop. > > Problems arise when I try to serve files by either uploading them directly > via ssh or ftp towards some remote, or by connecting to a remote and try > to > retrieve files from my machine. > > What happens is that after the first few Kb's, the transfer hangs and I > can > only disconnect by hanging up. Note that SMALL, ascii tranfers end > succesfully. > > This is an example of what /var/log/messages tells me in one case where > I was trying from a > remote to log into my machine and get files via ftp: > > -------------------------------------- > Jun 24 19:25:46 paperoga wu-ftpd[294]: FTP LOGIN FROM > pippo.pluto.paperoga.it > [xxx.xxx.xxx.xxx] pippo > Jun 24 19:29:05 paperoga pppd[254]: No response to 4 echo-requests > Jun 24 19:29:05 paperoga pppd[254]: Serial link appears to be > disconnected. > Jun 24 19:29:35 paperoga pppd[254]: Connection terminated. > Jun 24 19:29:35 paperoga pppd[254]: Connect time 9.2 minutes. > Jun 24 19:29:35 paperoga pppd[254]: Sent 56535 bytes, received 45908 > bytes. > Jun 24 19:29:36 paperoga pppd[254]: Hangup (SIGHUP) > Jun 24 19:29:36 paperoga pppd[254]: Exit. > -------------------------------------- > > an example of the progress of an ftp session is: > > 150 Opening BINARY mode data connection for celle.tar.gz > (xxx.yyy.zzz.kkk,1100). > ################################################################ > (64x1024 and then serial line hangs) > > Analogously an ssh session hangs after: > celle.tar.gz 100% |*****************************| 155 KB > 00:00 > > > Does anybody have any clue of what is happening to my transfers? > (are there other logs which may tell me more?) > Do I have to give away my monster-laptop to my newborn to amuse > himself?.... > > Thanks very much. > Alberto > > -/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/ > Alberto Bigazzi, PhD. > Research Associate, > Dept. of Mathematics, > Politecnico di Milano, > Piazza Leonardo da Vinci 32, > 20133 Milano (ITALY) > -/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/ > Phone: +39-02-2399 4508 > Fax: +39-02-2399 4568 > email: [EMAIL PROTECTED] > http://www1.mate.polimi.it/~albbig > -/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/ > > > >
