http://bugzilla.suse.com/show_bug.cgi?id=901122 --- Comment #3 from Gerald Pfeifer <gp@suse.com> --- In case you wonder about the sleep 10 before the ModemManager restart, without that (or a sleep 5, as I just tested), it does not work. In that case, the failure case, the log looks as follows: 2014-12-31T07:09:43.785237+08:00 tuna NetworkManager[887]: <info> Activation (cdc-wdm0) starting connection ' Telkomsel' 2014-12-31T07:09:43.785553+08:00 tuna NetworkManager[887]: <info> Activation (cdc-wdm0) Stage 1 of 5 (Device Prepare) scheduled... 2014-12-31T07:09:43.785765+08:00 tuna NetworkManager[887]: <info> Activation (cdc-wdm0) Stage 1 of 5 (Device Prepare) started... 2014-12-31T07:09:43.785958+08:00 tuna NetworkManager[887]: <info> (cdc-wdm0): device state change: disconnected -> prepare (reason 'none') [30 40 0] 2014-12-31T07:09:43.786158+08:00 tuna NetworkManager[887]: <info> NetworkManager state is now CONNECTING 2014-12-31T07:09:43.788308+08:00 tuna NetworkManager[887]: <info> (cdc-wdm0): device state change: prepare -> need-auth (reason 'none') [40 60 0] 2014-12-31T07:09:43.788595+08:00 tuna NetworkManager[887]: <info> Activation (cdc-wdm0) Stage 1 of 5 (Device Prepare) complete. 2014-12-31T07:09:43.794572+08:00 tuna NetworkManager[887]: <info> Activation (cdc-wdm0) Stage 1 of 5 (Device Prepare) scheduled... 2014-12-31T07:09:43.804897+08:00 tuna NetworkManager[887]: <info> Activation (cdc-wdm0) Stage 1 of 5 (Device Prepare) started... 2014-12-31T07:09:43.805129+08:00 tuna NetworkManager[887]: <info> (cdc-wdm0): device state change: need-auth -> prepare (reason 'none') [60 40 0] 2014-12-31T07:09:43.805883+08:00 tuna NetworkManager[887]: <info> Activation (cdc-wdm0) Stage 1 of 5 (Device Prepare) complete. 2014-12-31T07:09:43.830879+08:00 tuna NetworkManager[887]: <warn> (cdc-wdm0) failed to connect modem: Network timeout 2014-12-31T07:09:43.831168+08:00 tuna NetworkManager[887]: <info> (cdc-wdm0): device state change: prepare -> failed (reason 'gsm-registration-timeout') [40 120 32] 2014-12-31T07:09:43.831383+08:00 tuna NetworkManager[887]: <info> NetworkManager state is now DISCONNECTED 2014-12-31T07:09:43.831596+08:00 tuna NetworkManager[887]: <info> Disabling autoconnect for connection ' Telkomsel'. 2014-12-31T07:09:43.831806+08:00 tuna NetworkManager[887]: <warn> Activation (cdc-wdm0) failed for connection ' Telkomsel' 2014-12-31T07:09:43.833350+08:00 tuna NetworkManager[887]: <info> (cdc-wdm0): device state change: failed -> disconnected (reason 'none') [120 30 0] 2014-12-31T07:09:43.833651+08:00 tuna NetworkManager[887]: <info> (cdc-wdm0): deactivating device (reason 'none') [0] To summarize: A ModemManager restart is required, either as part of a script like suggested by Dominique or manually. I must not happen too early after resuming from suspend-to-RAM. (No delay or 1 second is too early; 10 seconds works rather reliable, and 5 seconds seems to do it as well.) -- You are receiving this mail because: You are on the CC list for the bug.