Re: Mobile broadband disconnections

[Dan Williams <dcbw redhat com>]

On Wed, 2009-05-13 at 18:18 +0200, tpfkanep wrote:
> Hi,
> I am experiening frequent disconnections when using NM. I used to have
> the same problems with [Xubuntu 8.10]. Then, the problem was solved by
> changing the default values of the following in [/etc/ppp/options] to:
> lcp-echo-interval 0
> lcp-echo-failure 0
> 
> I have since upgraded to [Xubuntu 9.04], with the latest version of
> NM, and I keep on getting disconnected, even after changing the values
> of [lcp-echo-interval] and [lcp-echo-failure] as in [Xubuntu 8.10].

Have you tried turning off "Send PPP Echo Packets" in the connection
editor's PPP page?  That tells NM to turn off the lcp echo stuff.

Dan


> Here are some extracts from some log files
> 
> debug:
> -----
> May 13 17:37:23 nicholas-desktop NetworkManager: <debug>
> [1242229043.781635] nm_serial_device_open(): (ttyACM0) opening
> device... 
> May 13 17:37:24 nicholas-desktop NetworkManager: <debug>
> [1242229044.218431] nm_ppp_manager_start(): Command
> line: /usr/sbin/pppd nodetach lock nodefaultroute ttyACM0 noipdefault
> noauth usepeerdns lcp-echo-failure 0 lcp-echo-interval 0
> ipparam /org/freedesktop/NetworkManager/PPP/0
> plugin /usr/lib/pppd/2.4.4/nm-pppd-plugin.so 
> May 13 17:37:24 nicholas-desktop NetworkManager: <debug>
> [1242229044.248610] nm_ppp_manager_start(): ppp started with pid 2641 
> May 13 17:47:55 nicholas-desktop NetworkManager: <debug>
> [1242229675.627977] nm_serial_device_close(): Closing device
> 'ttyACM0' 
> May 13 17:47:58 nicholas-desktop NetworkManager: <debug>
> [1242229678.000037] ensure_killed(): waiting for ppp pid 2641 to exit 
> May 13 17:47:58 nicholas-desktop NetworkManager: <debug>
> [1242229678.000165] ensure_killed(): ppp pid 2641 cleaned up 
> May 13 17:48:06 nicholas-desktop NetworkManager: <debug>
> [1242229686.828937] nm_serial_device_open(): (ttyACM0) opening
> device... 
> May 13 17:48:07 nicholas-desktop NetworkManager: <debug>
> [1242229687.240962] nm_ppp_manager_start(): Command
> line: /usr/sbin/pppd nodetach lock nodefaultroute ttyACM0 noipdefault
> noauth usepeerdns lcp-echo-failure 0 lcp-echo-interval 0
> ipparam /org/freedesktop/NetworkManager/PPP/1
> plugin /usr/lib/pppd/2.4.4/nm-pppd-plugin.so 
> May 13 17:48:07 nicholas-desktop NetworkManager: <debug>
> [1242229687.299174] nm_ppp_manager_start(): ppp started with pid 3027 
> May 13 17:49:35 nicholas-desktop NetworkManager: <debug>
> [1242229775.427044] nm_serial_device_close(): Closing device
> 'ttyACM0' 
> May 13 17:49:35 nicholas-desktop kernel: [  857.984676] mtrr: no MTRR
> for d0000000,10000000 found
> May 13 17:49:37 nicholas-desktop NetworkManager: <debug>
> [1242229777.999887] ensure_killed(): waiting for ppp pid 3027 to exit 
> May 13 17:49:37 nicholas-desktop NetworkManager: <debug>
> [1242229777.999997] ensure_killed(): ppp pid 3027 cleaned up 
> 
> messages:
> --------
> May 13 17:37:24 nicholas-desktop pppd[2641]:
> Plugin /usr/lib/pppd/2.4.4/nm-pppd-plugin.so loaded.
> May 13 17:37:24 nicholas-desktop pppd[2641]: pppd 2.4.5 started by
> root, uid 0
> May 13 17:37:24 nicholas-desktop pppd[2641]: Using interface ppp0
> May 13 17:37:24 nicholas-desktop pppd[2641]: Connect: ppp0
> <--> /dev/ttyACM0
> May 13 17:37:24 nicholas-desktop pppd[2641]: Remote message: PAP
> access OK
> May 13 17:37:24 nicholas-desktop pppd[2641]: PAP authentication
> succeeded
> May 13 17:37:24 nicholas-desktop kernel: [  126.775852] PPP BSD
> Compression module registered
> May 13 17:37:24 nicholas-desktop kernel: [  126.815335] PPP Deflate
> Compression module registered
> May 13 17:37:25 nicholas-desktop pppd[2641]: local  IP address
> 172.28.90.247
> May 13 17:37:25 nicholas-desktop pppd[2641]: remote IP address
> 172.28.90.0
> May 13 17:37:25 nicholas-desktop pppd[2641]: primary   DNS address
> 41.208.11.219
> May 13 17:37:25 nicholas-desktop pppd[2641]: secondary DNS address
> 209.212.96.1
> May 13 17:37:34 nicholas-desktop kernel: [  137.111102]
> notification-da[2622]: segfault at 53ce80a ip 0a051371 sp bfdd7d7c
> error 4
> May 13 17:47:55 nicholas-desktop pppd[2641]: LCP terminated by peer
> May 13 17:47:55 nicholas-desktop pppd[2641]: Connect time 10.5
> minutes.
> May 13 17:47:55 nicholas-desktop pppd[2641]: Sent 236776 bytes,
> received 4496097 bytes.
> May 13 17:47:55 nicholas-desktop pppd[2641]: Modem hangup
> May 13 17:47:55 nicholas-desktop pppd[2641]: Connection terminated.
> May 13 17:47:55 nicholas-desktop pppd[2641]: Exit.
> 
> daemon.log:
> ----------
> May 13 17:37:23 nicholas-desktop NetworkManager: <info>  Activation
> (ttyACM0) starting connection 'MTN' 
> May 13 17:37:23 nicholas-desktop NetworkManager: <info>  (ttyACM0):
> device state change: 3 -> 4 
> May 13 17:37:23 nicholas-desktop NetworkManager: <info>  Activation
> (ttyACM0) Stage 1 of 5 (Device Prepare) scheduled... 
> May 13 17:37:23 nicholas-desktop NetworkManager: <info>  Activation
> (ttyACM0) Stage 1 of 5 (Device Prepare) started... 
> May 13 17:37:23 nicholas-desktop NetworkManager: <debug>
> [1242229043.781635] nm_serial_device_open(): (ttyACM0) opening
> device... 
> May 13 17:37:23 nicholas-desktop NetworkManager: <info>  Activation
> (ttyACM0) Stage 1 of 5 (Device Prepare) complete. 
> May 13 17:37:24 nicholas-desktop NetworkManager: <info>  (ttyACM0):
> powering up... 
> May 13 17:37:24 nicholas-desktop NetworkManager: <info>  Registered on
> Home network 
> May 13 17:37:24 nicholas-desktop NetworkManager: <info>  Associated
> with network: +COPS: 0,0,"MTN-SA" 
> May 13 17:37:24 nicholas-desktop NetworkManager: <info>  Connected,
> Woo! 
> May 13 17:37:24 nicholas-desktop NetworkManager: <info>  Activation
> (ttyACM0) Stage 2 of 5 (Device Configure) scheduled... 
> May 13 17:37:24 nicholas-desktop NetworkManager: <info>  Activation
> (ttyACM0) Stage 2 of 5 (Device Configure) starting... 
> May 13 17:37:24 nicholas-desktop NetworkManager: <info>  (ttyACM0):
> device state change: 4 -> 5 
> May 13 17:37:24 nicholas-desktop NetworkManager: <info>  Starting pppd
> connection 
> May 13 17:37:24 nicholas-desktop NetworkManager: <debug>
> [1242229044.218431] nm_ppp_manager_start(): Command
> line: /usr/sbin/pppd nodetach lock nodefaultroute ttyACM0 noipdefault
> noauth usepeerdns lcp-echo-failure 0 lcp-echo-interval 0
> ipparam /org/freedesktop/NetworkManager/PPP/0
> plugin /usr/lib/pppd/2.4.4/nm-pppd-plugin.so 
> May 13 17:37:24 nicholas-desktop NetworkManager: <debug>
> [1242229044.248610] nm_ppp_manager_start(): ppp started with pid 2641 
> May 13 17:37:24 nicholas-desktop NetworkManager: <info>  Activation
> (ttyACM0) Stage 2 of 5 (Device Configure) complete. 
> May 13 17:37:24 nicholas-desktop NetworkManager: <info>  (ttyACM0):
> device state change: 5 -> 6 
> May 13 17:37:24 nicholas-desktop NetworkManager: <info>  (ttyACM0):
> device state change: 6 -> 7 
> May 13 17:37:25 nicholas-desktop NetworkManager: <info>  PPP
> manager(IP Config Get) reply received. 
> May 13 17:37:25 nicholas-desktop NetworkManager: <info>  Activation
> (ttyACM0) Stage 4 of 5 (IP Configure Get) scheduled... 
> May 13 17:37:25 nicholas-desktop NetworkManager: <info>  Activation
> (ttyACM0) Stage 4 of 5 (IP Configure Get) started... 
> May 13 17:37:25 nicholas-desktop NetworkManager: <info>  Activation
> (ttyACM0) Stage 5 of 5 (IP Configure Commit) scheduled... 
> May 13 17:37:25 nicholas-desktop NetworkManager: <info>  Activation
> (ttyACM0) Stage 4 of 5 (IP Configure Get) complete. 
> May 13 17:37:25 nicholas-desktop NetworkManager: <info>  Activation
> (ttyACM0) Stage 5 of 5 (IP Configure Commit) started... 
> May 13 17:37:26 nicholas-desktop NetworkManager: <info>  (ttyACM0):
> device state change: 7 -> 8 
> May 13 17:37:26 nicholas-desktop NetworkManager: <info>  Policy set
> 'MTN' (ppp0) as default for routing and DNS. 
> May 13 17:37:26 nicholas-desktop NetworkManager: <info>  Activation
> (ttyACM0) successful, device activated. 
> May 13 17:37:26 nicholas-desktop NetworkManager: <info>  Activation
> (ttyACM0) Stage 5 of 5 (IP Configure Commit) complete. 
> May 13 17:37:30 nicholas-desktop ntpdate[2739]: no servers can be
> used, exiting
> May 13 17:47:55 nicholas-desktop NetworkManager: <info>  (ttyACM0):
> device state change: 8 -> 7 
> May 13 17:47:55 nicholas-desktop NetworkManager: <info>  (ttyACM0):
> device state change: 7 -> 9 
> May 13 17:47:55 nicholas-desktop NetworkManager: <WARN>  monitor_cb():
> Could not read ppp stats: No such device 
> May 13 17:47:55 nicholas-desktop NetworkManager: <debug>
> [1242229675.627977] nm_serial_device_close(): Closing device
> 'ttyACM0' 
> May 13 17:47:55 nicholas-desktop NetworkManager: <info>  Marking
> connection 'MTN' invalid. 
> May 13 17:47:55 nicholas-desktop NetworkManager: <info>  Activation
> (ttyACM0) failed. 
> May 13 17:47:55 nicholas-desktop NetworkManager: <info>  (ttyACM0):
> device state change: 9 -> 3 
> May 13 17:47:55 nicholas-desktop NetworkManager: <info>  (ttyACM0):
> deactivating device (reason: 0). 
> May 13 17:47:55 nicholas-desktop NetworkManager:
> nm_system_device_flush_ip4_routes_with_iface: assertion `iface_idx >=
> 0' failed
> May 13 17:47:55 nicholas-desktop NetworkManager:
> nm_system_device_flush_ip4_addresses_with_iface: assertion `iface_idx
> >= 0' failed
> May 13 17:47:58 nicholas-desktop NetworkManager: <debug>
> [1242229678.000037] ensure_killed(): waiting for ppp pid 2641 to exit 
> May 13 17:47:58 nicholas-desktop NetworkManager: <debug>
> [1242229678.000165] ensure_killed(): ppp pid 2641 cleaned up 
> 
> Please help.
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