Snaps parou de abrir no Ubuntu 18.04 LTS

Question

Sempre que eu abro um snap, nada acontece. Costumava trabalhar, mas agora não funciona. Todo o meu software está atualizado e eu não alterei nenhuma configuração nem adicionei nenhum repositório. Por favor ajude.

Atualização: Meu trabalho de spotify e retroarch recém-instalado. Não é novidade para o Spotify funcionar, mas para o retroarque é.

Entrada da lista de snap:

Name                  Version                 Rev   Tracking  Developer     Notes
communitheme          0.1                     326   stable    didrocks      -
core                  16-2.32.8               4650  stable    canonical     core
discord               0.0.5                   66    stable    snapcrafters  -
minecraft             latest                  11    stable    snapcrafters  -
minecraft-nsg         2                       13    stable    nsg           -
retroarch             1.7.3                   118   stable    libretro      -
simplescreenrecorder  0.1                     1     stable    xiaoguo       -
spotify               1.0.80.474.gef6b503e-7  16    stable    spotify       -

Entrada da versão snap:

snap    2.32.8+18.04
snapd   2.32.8+18.04
series  16
ubuntu  18.04
kernel  4.15.0-22-generic

Entrada do status do systemctl snapd.service:

snapd.service - Snappy daemon
   Loaded: loaded (/lib/systemd/system/snapd.service; enabled; vendor preset: en
   Active: active (running) since Sat 2018-06-02 11:36:07 EDT; 18min ago
 Main PID: 692 (snapd)
    Tasks: 14 (limit: 2154)
   CGroup: /system.slice/snapd.service
           └─692 /usr/lib/snapd/snapd

Jun 02 11:46:09 adam-HP-Stream-Notebook snapd[692]: 2018/06/02 11:46:09.257536 s
Jun 02 11:46:09 adam-HP-Stream-Notebook snapd[692]: snap "core": snap has no upd
Jun 02 11:46:09 adam-HP-Stream-Notebook snapd[692]: snap "minecraft": snap has n
Jun 02 11:46:09 adam-HP-Stream-Notebook snapd[692]: snap "communitheme": snap ha
Jun 02 11:46:09 adam-HP-Stream-Notebook snapd[692]: snap "spotify": snap has no 
Jun 02 11:46:09 adam-HP-Stream-Notebook snapd[692]: snap "retroarch": snap has n
Jun 02 11:46:09 adam-HP-Stream-Notebook snapd[692]: snap "minecraft-nsg": snap h
Jun 02 11:46:09 adam-HP-Stream-Notebook snapd[692]: snap "discord": snap has no 
Jun 02 11:46:09 adam-HP-Stream-Notebook snapd[692]: snap "simplescreenrecorder":
Jun 02 11:46:09 adam-HP-Stream-Notebook snapd[692]: 2018/06/02 11:46:09.270581 a
lines 1-18/18 (END)

    

Answer 1

Estou com um problema semelhante, que parece ter começado depois de uma atualização de software.

versão de encaixe:

snap    2.33.1+18.04ubuntu2
snapd   2.33.1+18.04ubuntu2
series  16
ubuntu  18.04
kernel  4.15.0-24-generic

lista de snap

Name                 Version                 Rev   Tracking  Developer           Notes
communitheme         0.1                     614   stable    didrocks        -
core                 16-2.33.1               4917  stable    canonical       core
hugo                 0.44                    2205  stable    hugo-authors    -
keepassxc            2.3.3                   38    stable    keepassxreboot  -
qownnotes            18.07.4                 1038  stable    pbek            -
spotify              1.0.80.474.gef6b503e-7  16    stable    spotify         -
ubuntu-mate-welcome  17.10.23-e4f4c4c        169   stable    flexiondotorg   classic

systemctl status snapd.service

● snapd.service - Snappy daemon
   Loaded: loaded (/lib/systemd/system/snapd.service; enabled; vendor preset: en
   Active: active (running) since Sat 2018-07-21 10:23:47 ACST; 7h ago
 Main PID: 840 (snapd)
    Tasks: 25 (limit: 4915)
   CGroup: /system.slice/snapd.service
           └─840 /usr/lib/snapd/snapd

Jul 21 10:38:53 dark-horse snapd[840]: 2018/07/21 10:38:53.913415 storehelpers.g
Jul 21 10:38:53 dark-horse snapd[840]: snap "hugo": snap has no updates availabl
Jul 21 10:38:53 dark-horse snapd[840]: snap "ubuntu-mate-welcome": snap has no u
Jul 21 10:38:53 dark-horse snapd[840]: snap "spotify": snap has no updates avail
Jul 21 10:38:53 dark-horse snapd[840]: snap "qownnotes": snap has no updates ava
Jul 21 10:38:53 dark-horse snapd[840]: snap "core": snap has no updates availabl
Jul 21 10:38:53 dark-horse snapd[840]: snap "keepassxc": snap has no updates ava
Jul 21 10:38:53 dark-horse snapd[840]: 2018/07/21 10:38:53.915637 autorefresh.go
Jul 21 17:17:58 dark-horse snapd[840]: 2018/07/21 17:17:58.423179 api.go:1045: I
Jul 21 17:18:12 dark-horse snapd[840]: 2018/07/21 17:18:12.996129 api.go:1045: I
lines 1-18/18 (END)

Parece ser um problema de permissões. Se eu executar um aplicativo afetado na linha de comando:

steven@dark-horse:~$ qownnotes
/snap/qownnotes/1038/bin/desktop-launch: line 23: /home/steven/.config/user-dirs.dirs: Permission denied
Fatal: QXcbConnection: Could not connect to display :0 ((null):0, (null))
Aborted (core dumped)
steven@dark-horse:~$

steven@dark-horse:~$ keepassxc
/snap/keepassxc/38/bin/desktop-launch: line 23: /home/steven/.config/user-dirs.dirs: Permission denied
QXcbConnection: Could not connect to display :0
Aborted
steven@dark-horse:~$ 

steven@dark-horse:~$ spotify
Gtk-Message: Failed to load module "gail"
Gtk-Message: Failed to load module "atk-bridge"

(spotify:27512): Gtk-WARNING **: cannot open display: :0
steven@dark-horse:~$ 

ubuntu-mate-welcome (um clique clássico) funciona normalmente.

Ao reverter os snaps afetados, eles voltaram a trabalhar ...

sudo snap revert qownnotes

... e os snaps continuaram a funcionar depois de atualizar os snaps novamente.

sudo snap refresh qownnotes