I have experienced exactly the same bug. The interesting thing is that when I made I clean install of the Ubuntu 12.04 distro, the VPN connected with no problem at all, and after a few days it just didn't work anymore. This es my syslog info:
May 5 19:05:43 andres-desktop NetworkManager[1060]: <info> Starting VPN service 'pptp'... May 5 19:05:43 andres-desktop NetworkManager[1060]: <info> VPN service 'pptp' started (org.freedesktop.NetworkManager.pptp), PID 3264 May 5 19:05:43 andres-desktop NetworkManager[1060]: <info> VPN service 'pptp' appeared; activating connections May 5 19:05:43 andres-desktop NetworkManager[1060]: <info> VPN plugin state changed: init (1) May 5 19:05:43 andres-desktop NetworkManager[1060]: <info> VPN plugin state changed: starting (3) May 5 19:05:43 andres-desktop NetworkManager[1060]: <info> VPN connection 'Conexión VPN 1' (Connect) reply received. May 5 19:05:43 andres-desktop pppd[3268]: Plugin /usr/lib/pppd/2.4.5/nm-pptp-pppd-plugin.so loaded. May 5 19:05:43 andres-desktop pppd[3268]: pppd 2.4.5 started by root, uid 0 May 5 19:05:43 andres-desktop NetworkManager[1060]: SCPlugin-Ifupdown: devices added (path: /sys/devices/virtual/net/ppp0, iface: ppp0) May 5 19:05:43 andres-desktop NetworkManager[1060]: SCPlugin-Ifupdown: device added (path: /sys/devices/virtual/net/ppp0, iface: ppp0): no ifupdown configuration found. May 5 19:05:43 andres-desktop pppd[3268]: Using interface ppp0 May 5 19:05:43 andres-desktop pppd[3268]: Connect: ppp0 <--> /dev/pts/0 May 5 19:05:43 andres-desktop pptp[3271]: nm-pptp-service-3264 log[main:pptp.c:314]: The synchronous pptp option is NOT activated May 5 19:05:43 andres-desktop pptp[3279]: nm-pptp-service-3264 log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 1 'Start-Control-Connection-Request' May 5 19:05:43 andres-desktop pptp[3279]: nm-pptp-service-3264 log[ctrlp_disp:pptp_ctrl.c:739]: Received Start Control Connection Reply May 5 19:05:43 andres-desktop pptp[3279]: nm-pptp-service-3264 log[ctrlp_disp:pptp_ctrl.c:773]: Client connection established. May 5 19:05:44 andres-desktop pptp[3279]: nm-pptp-service-3264 log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 7 'Outgoing-Call-Request' May 5 19:05:44 andres-desktop pptp[3279]: nm-pptp-service-3264 log[ctrlp_disp:pptp_ctrl.c:858]: Received Outgoing Call Reply. May 5 19:05:44 andres-desktop pptp[3279]: nm-pptp-service-3264 log[ctrlp_disp:pptp_ctrl.c:897]: Outgoing call established (call ID 0, peer's call ID 45146). May 5 19:05:44 andres-desktop kernel: [ 6623.862203] Inbound IN=eth0 OUT= MAC=00:19:66:f9:c8:2b:00:23:8e:d3:2e:a4:08:00 SRC=201.196.216.10 DST=192.168.10.2 LEN=93 TOS=0x00 PREC=0x00 TTL=124 ID=28403 PROTO=47 May 5 19:05:44 andres-desktop kernel: [ 6623.865824] Inbound IN=eth0 OUT= MAC=00:19:66:f9:c8:2b:00:23:8e:d3:2e:a4:08:00 SRC=201.196.216.10 DST=192.168.10.2 LEN=56 TOS=0x00 PREC=0x00 TTL=124 ID=28404 PROTO=47 May 5 19:05:46 andres-desktop kernel: [ 6625.863786] Inbound IN=eth0 OUT= MAC=00:19:66:f9:c8:2b:00:23:8e:d3:2e:a4:08:00 SRC=201.196.216.10 DST=192.168.10.2 LEN=89 TOS=0x00 PREC=0x00 TTL=124 ID=28405 PROTO=47 May 5 19:05:47 andres-desktop kernel: [ 6626.652935] Inbound IN=eth0 OUT= MAC=00:19:66:f9:c8:2b:00:23:8e:d3:2e:a4:08:00 SRC=201.196.216.10 DST=192.168.10.2 LEN=60 TOS=0x00 PREC=0x00 TTL=124 ID=28406 PROTO=47 May 5 19:05:49 andres-desktop kernel: [ 6628.873683] Inbound IN=eth0 OUT= MAC=00:19:66:f9:c8:2b:00:23:8e:d3:2e:a4:08:00 SRC=201.196.216.10 DST=192.168.10.2 LEN=89 TOS=0x00 PREC=0x00 TTL=124 ID=28407 PROTO=47 May 5 19:05:50 andres-desktop kernel: [ 6629.651395] Inbound IN=eth0 OUT= MAC=00:19:66:f9:c8:2b:00:23:8e:d3:2e:a4:08:00 SRC=201.196.216.10 DST=192.168.10.2 LEN=60 TOS=0x00 PREC=0x00 TTL=124 ID=28408 PROTO=47 May 5 19:05:53 andres-desktop kernel: [ 6632.661421] Inbound IN=eth0 OUT= MAC=00:19:66:f9:c8:2b:00:23:8e:d3:2e:a4:08:00 SRC=201.196.216.10 DST=192.168.10.2 LEN=60 TOS=0x00 PREC=0x00 TTL=124 ID=28409 PROTO=47 May 5 19:05:53 andres-desktop kernel: [ 6632.873368] Inbound IN=eth0 OUT= MAC=00:19:66:f9:c8:2b:00:23:8e:d3:2e:a4:08:00 SRC=201.196.216.10 DST=192.168.10.2 LEN=89 TOS=0x00 PREC=0x00 TTL=124 ID=28410 PROTO=47 May 5 19:05:56 andres-desktop kernel: [ 6635.661597] Inbound IN=eth0 OUT= MAC=00:19:66:f9:c8:2b:00:23:8e:d3:2e:a4:08:00 SRC=201.196.216.10 DST=192.168.10.2 LEN=60 TOS=0x00 PREC=0x00 TTL=124 ID=28411 PROTO=47 May 5 19:05:57 andres-desktop kernel: [ 6636.873488] Inbound IN=eth0 OUT= MAC=00:19:66:f9:c8:2b:00:23:8e:d3:2e:a4:08:00 SRC=201.196.216.10 DST=192.168.10.2 LEN=89 TOS=0x00 PREC=0x00 TTL=124 ID=28412 PROTO=47 May 5 19:05:59 andres-desktop kernel: [ 6638.661960] Inbound IN=eth0 OUT= MAC=00:19:66:f9:c8:2b:00:23:8e:d3:2e:a4:08:00 SRC=201.196.216.10 DST=192.168.10.2 LEN=60 TOS=0x00 PREC=0x00 TTL=124 ID=28413 PROTO=47 May 5 19:06:01 andres-desktop kernel: [ 6640.873007] Inbound IN=eth0 OUT= MAC=00:19:66:f9:c8:2b:00:23:8e:d3:2e:a4:08:00 SRC=201.196.216.10 DST=192.168.10.2 LEN=89 TOS=0x00 PREC=0x00 TTL=124 ID=28414 PROTO=47 May 5 19:06:02 andres-desktop kernel: [ 6641.662142] Inbound IN=eth0 OUT= MAC=00:19:66:f9:c8:2b:00:23:8e:d3:2e:a4:08:00 SRC=201.196.216.10 DST=192.168.10.2 LEN=60 TOS=0x00 PREC=0x00 TTL=124 ID=28415 PROTO=47 May 5 19:06:05 andres-desktop kernel: [ 6644.662545] Inbound IN=eth0 OUT= MAC=00:19:66:f9:c8:2b:00:23:8e:d3:2e:a4:08:00 SRC=201.196.216.10 DST=192.168.10.2 LEN=60 TOS=0x00 PREC=0x00 TTL=124 ID=28416 PROTO=47 May 5 19:06:05 andres-desktop kernel: [ 6644.871953] Inbound IN=eth0 OUT= MAC=00:19:66:f9:c8:2b:00:23:8e:d3:2e:a4:08:00 SRC=201.196.216.10 DST=192.168.10.2 LEN=89 TOS=0x00 PREC=0x00 TTL=124 ID=28417 PROTO=47 May 5 19:06:08 andres-desktop kernel: [ 6647.660764] Inbound IN=eth0 OUT= MAC=00:19:66:f9:c8:2b:00:23:8e:d3:2e:a4:08:00 SRC=201.196.216.10 DST=192.168.10.2 LEN=60 TOS=0x00 PREC=0x00 TTL=124 ID=28418 PROTO=47 May 5 19:06:09 andres-desktop kernel: [ 6648.872966] Inbound IN=eth0 OUT= MAC=00:19:66:f9:c8:2b:00:23:8e:d3:2e:a4:08:00 SRC=201.196.216.10 DST=192.168.10.2 LEN=89 TOS=0x00 PREC=0x00 TTL=124 ID=28419 PROTO=47 May 5 19:06:11 andres-desktop kernel: [ 6650.672705] Inbound IN=eth0 OUT= MAC=00:19:66:f9:c8:2b:00:23:8e:d3:2e:a4:08:00 SRC=201.196.216.10 DST=192.168.10.2 LEN=60 TOS=0x00 PREC=0x00 TTL=124 ID=28420 PROTO=47 May 5 19:06:13 andres-desktop kernel: [ 6652.872140] Inbound IN=eth0 OUT= MAC=00:19:66:f9:c8:2b:00:23:8e:d3:2e:a4:08:00 SRC=201.196.216.10 DST=192.168.10.2 LEN=89 TOS=0x00 PREC=0x00 TTL=124 ID=28425 PROTO=47 May 5 19:06:14 andres-desktop pppd[3268]: LCP: timeout sending Config-Requests May 5 19:06:14 andres-desktop pppd[3268]: Connection terminated. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/787503 Title: Ubuntu PPTP disconect problem To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/787503/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs