happen to see the same error message on 16.04.1, snapd v2.20.1ubuntu1 ubuntu-core v16.04.1 rev1357
systemctl status snapd.service ● snapd.service - Snappy daemon Loaded: loaded (/lib/systemd/system/snapd.service; disabled; vendor preset: enabled) Active: inactive (dead) since Mon 2017-01-09 09:37:53 CST; 8min ago Main PID: 2149 (code=exited, status=0/SUCCESS) Jan 06 11:24:00 X230 /usr/lib/snapd/snapd[2149]: daemon.go:174: DEBUG: uid=0;@ POST /v2/snaps 26.478524ms 500 Jan 07 03:43:54 X230 /usr/lib/snapd/snapd[2149]: daemon.go:174: DEBUG: uid=0;@ POST /v2/snaps 51.193286ms 500 Jan 09 09:30:16 X230 /usr/lib/snapd/snapd[2149]: daemon.go:174: DEBUG: uid=0;@ POST /v2/snaps 18.417449ms 500 Jan 09 09:37:21 X230 /usr/lib/snapd/snapd[2149]: daemon.go:174: DEBUG: uid=0;@ GET /v2/snaps 37.008379ms 200 Jan 09 09:37:25 X230 /usr/lib/snapd/snapd[2149]: daemon.go:174: DEBUG: uid=1000;@ GET /v2/snaps 4.549011ms 200 Jan 09 09:37:29 X230 /usr/lib/snapd/snapd[2149]: daemon.go:174: DEBUG: uid=1000;@ GET /v2/interfaces 4.250357ms 200 Jan 09 09:37:53 X230 systemd[1]: Stopping Snappy daemon... Jan 09 09:37:53 X230 /usr/lib/snapd/snapd[2149]: main.go:67: Exiting on terminated signal. Jan 09 09:37:53 X230 snapd[2149]: 2017/01/09 09:37:53.585542 main.go:67: Exiting on terminated signal. Jan 09 09:37:53 X230 systemd[1]: Stopped Snappy daemon. - and restart the snapd service helps: $ sudo systemctl restart snapd.service $ systemctl status snapd.service ● snapd.service - Snappy daemon Loaded: loaded (/lib/systemd/system/snapd.service; disabled; vendor preset: enabled) Active: active (running) since Mon 2017-01-09 09:46:56 CST; 1s ago Main PID: 9992 (snapd) Tasks: 7 Memory: 22.9M CPU: 34ms CGroup: /system.slice/snapd.service └─9992 /usr/lib/snapd/snapd Jan 09 09:46:56 X230 /usr/lib/snapd/snapd[9992]: helpers.go:102: cannot connect plug "network-bind" from snap "wifi-ap", no such plug Jan 09 09:46:56 X230 /usr/lib/snapd/snapd[9992]: helpers.go:102: cannot connect plug "network-bind" from snap "rocketchat-server", no such plug Jan 09 09:46:56 X230 /usr/lib/snapd/snapd[9992]: helpers.go:102: cannot connect plug "network-bind" from snap "snapweb", no such plug Jan 09 09:46:56 X230 /usr/lib/snapd/snapd[9992]: helpers.go:102: cannot connect plug "x11" from snap "tensorflow-demo", no such plug Jan 09 09:46:56 X230 /usr/lib/snapd/snapd[9992]: helpers.go:102: cannot connect plug "network-bind" from snap "notes", no such plug Jan 09 09:46:56 X230 /usr/lib/snapd/snapd[9992]: helpers.go:102: cannot connect plug "snapd-control" from snap "snapweb", no such plug Jan 09 09:46:56 X230 /usr/lib/snapd/snapd[9992]: helpers.go:102: cannot connect plug "unity7" from snap "notes", no such plug Jan 09 09:46:56 X230 /usr/lib/snapd/snapd[9992]: helpers.go:102: cannot connect plug "network-bind" from snap "tensorflow-demo", no such plug Jan 09 09:46:56 X230 /usr/lib/snapd/snapd[9992]: helpers.go:102: cannot connect plug "network" from snap "wifi-ap", no such plug Jan 09 09:46:56 X230 /usr/lib/snapd/snapd[9992]: daemon.go:207: DEBUG: init done in 1.374045ms -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1631514 Title: snap doesnt work. error: cannot communicate with server To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/snapd/+bug/1631514/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs