$ env PULSE_LOG=4 SNAPD_DEBUG=1 SNAP_CONFINE_DEBUG=1 snap run spotify
2017/12/21 09:32:11.220623 cmd.go:70: DEBUG: re-exec not supported on distro "arch" yet
DEBUG: security tag: snap.spotify.spotify
DEBUG: executable:   /usr/lib/snapd/snap-exec
DEBUG: confinement:  non-classic
DEBUG: base snap:    core
DEBUG: ruid: 1000, euid: 0, suid: 0
DEBUG: rgid: 1000, egid: 0, sgid: 0
DEBUG: checking if the current process shares mount namespace with the init process
DEBUG: re-associating is not required
DEBUG: creating lock directory /run/snapd/lock (if missing)
DEBUG: opening lock directory /run/snapd/lock
DEBUG: opening lock file: /run/snapd/lock/.lock
DEBUG: sanity timeout initialized and set for three seconds
DEBUG: acquiring exclusive lock (scope (global))
DEBUG: sanity timeout reset and disabled
DEBUG: ensuring that snap mount directory is shared
DEBUG: unsharing snap namespace directory
DEBUG: creating namespace group directory /run/snapd/ns
DEBUG: namespace group directory does not require intialization
DEBUG: releasing lock (scope: (global))
DEBUG: creating lock directory /run/snapd/lock (if missing)
DEBUG: opening lock directory /run/snapd/lock
DEBUG: opening lock file: /run/snapd/lock/spotify.lock
DEBUG: sanity timeout initialized and set for three seconds
DEBUG: acquiring exclusive lock (scope spotify)
DEBUG: sanity timeout reset and disabled
DEBUG: initializing mount namespace: spotify
DEBUG: opening namespace group directory /run/snapd/ns
DEBUG: found base snap filesystem device 7:0
DEBUG: attempting to re-associate the mount namespace with the namespace group spotify
DEBUG: successfully re-associated the mount namespace with the namespace group spotify
DEBUG: found root filesystem inside the mount namespace 7:0
DEBUG: releasing resources associated with namespace group spotify
DEBUG: moved process 26480 to freezer cgroup hierarchy for snap spotify
DEBUG: releasing lock (scope: spotify)
DEBUG: resetting PATH to values in sync with core snap
DEBUG: snappy_udev_init
DEBUG: setup_devices_cgroup
DEBUG: write_string_to_file /sys/fs/cgroup/devices/snap.spotify.spotify/tasks 26480
DEBUG: write_string_to_file /sys/fs/cgroup/devices/snap.spotify.spotify/devices.deny a
DEBUG: run_snappy_app_dev_add: /sys/class/mem/null snap_spotify_spotify
DEBUG: running snappy-app-dev add snap_spotify_spotify /sys/class/mem/null 1:3
DEBUG: run_snappy_app_dev_add: /sys/class/mem/full snap_spotify_spotify
DEBUG: running snappy-app-dev add snap_spotify_spotify /sys/class/mem/full 1:7
DEBUG: run_snappy_app_dev_add: /sys/class/mem/zero snap_spotify_spotify
DEBUG: running snappy-app-dev add snap_spotify_spotify /sys/class/mem/zero 1:5
DEBUG: run_snappy_app_dev_add: /sys/class/mem/random snap_spotify_spotify
DEBUG: running snappy-app-dev add snap_spotify_spotify /sys/class/mem/random 1:8
DEBUG: run_snappy_app_dev_add: /sys/class/mem/urandom snap_spotify_spotify
DEBUG: running snappy-app-dev add snap_spotify_spotify /sys/class/mem/urandom 1:9
DEBUG: run_snappy_app_dev_add: /sys/class/tty/tty snap_spotify_spotify
DEBUG: running snappy-app-dev add snap_spotify_spotify /sys/class/tty/tty 5:0
DEBUG: run_snappy_app_dev_add: /sys/class/tty/console snap_spotify_spotify
DEBUG: running snappy-app-dev add snap_spotify_spotify /sys/class/tty/console 5:1
DEBUG: run_snappy_app_dev_add: /sys/class/tty/ptmx snap_spotify_spotify
DEBUG: running snappy-app-dev add snap_spotify_spotify /sys/class/tty/ptmx 5:2
DEBUG: running snappy-app-dev add snap_spotify_spotify /dev/pts/slaves 136:*
DEBUG: running snappy-app-dev add snap_spotify_spotify /dev/pts/slaves 137:*
DEBUG: running snappy-app-dev add snap_spotify_spotify /dev/pts/slaves 138:*
DEBUG: running snappy-app-dev add snap_spotify_spotify /dev/pts/slaves 139:*
DEBUG: running snappy-app-dev add snap_spotify_spotify /dev/pts/slaves 140:*
DEBUG: running snappy-app-dev add snap_spotify_spotify /dev/pts/slaves 141:*
DEBUG: running snappy-app-dev add snap_spotify_spotify /dev/pts/slaves 142:*
DEBUG: running snappy-app-dev add snap_spotify_spotify /dev/pts/slaves 143:*
DEBUG: running snappy-app-dev add snap_spotify_spotify /dev/uhid 10:239
DEBUG: run_snappy_app_dev_add: /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/card1 snap_spotify_spotify
DEBUG: running snappy-app-dev add snap_spotify_spotify /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/card1 226:1
DEBUG: run_snappy_app_dev_add: /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/card1/card1-VGA-2 snap_spotify_spotify
DEBUG: running snappy-app-dev add snap_spotify_spotify /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/card1/card1-VGA-2 0:0
DEBUG: run_snappy_app_dev_add: /sys/devices/pci0000:00/0000:00:02.0/drm/card0 snap_spotify_spotify
DEBUG: running snappy-app-dev add snap_spotify_spotify /sys/devices/pci0000:00/0000:00:02.0/drm/card0 226:0
DEBUG: run_snappy_app_dev_add: /sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-DP-1 snap_spotify_spotify
DEBUG: running snappy-app-dev add snap_spotify_spotify /sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-DP-1 0:0
DEBUG: run_snappy_app_dev_add: /sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-HDMI-A-1 snap_spotify_spotify
DEBUG: running snappy-app-dev add snap_spotify_spotify /sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-HDMI-A-1 0:0
DEBUG: run_snappy_app_dev_add: /sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-LVDS-1 snap_spotify_spotify
DEBUG: running snappy-app-dev add snap_spotify_spotify /sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-LVDS-1 0:0
DEBUG: run_snappy_app_dev_add: /sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-VGA-1 snap_spotify_spotify
DEBUG: running snappy-app-dev add snap_spotify_spotify /sys/devices/pci0000:00/0000:00:02.0/drm/card0/card0-VGA-1 0:0
DEBUG: creating user data directory: /home/jagan/snap/spotify/2
DEBUG: loading bpf program for security tag snap.spotify.spotify
DEBUG: read 5960 bytes from /var/lib/snapd/seccomp/bpf//snap.spotify.spotify.bin
DEBUG: raising privileges to load seccomp profile
DEBUG: dropping privileges after loading seccomp profile
DEBUG: execv(/usr/lib/snapd/snap-exec, /usr/lib/snapd/snap-exec...)
DEBUG:  argv[1] = spotify
Gtk-Message: Failed to load module "canberra-gtk-module"
Parsing configuration file '/etc/pulse/client.conf'
/etc/pulse/client.conf.d does not exist, ignoring.
Using shared memory pool with 1024 slots of size 64.0 KiB each, total size is 64.0 MiB, maximum usable slot size is 65472
Trying to connect to /run/user/1000/snap.spotify/pulse/native...
connect(): No such file or directory (2)
Trying to connect to /var/run/pulse/native...
connect(): No such file or directory (2)