The reason I am behind App Center is that I want to install apps via UI and not via command. Since I haven’t been able to launch App Center yet, I haven’t installed any snap yet.
/apps>snap list
Name Version Rev Tracking Publisher Notes
bare 1.0 5 latest/stable canonical** base
core22 20250528 2010 latest/stable canonical** base
gnome-42-2204 0+git.38ea591 202 latest/stable canonical** -
gtk-common-themes 0.1-81-g442e511 1535 latest/stable canonical** -
snap-store 0+git.90575829 1270 2/stable canonical** -
snapd 2.70 24792 latest/stable canonical** snapd
/apps>ausearch -m AVC
Error opening config file (Permission denied)
NOTE - using built-in end_of_event_timeout: 2
NOTE - using built-in logs: /var/log/audit/audit.log
Error opening /var/log/audit/audit.log (Permission denied)
The following command launched App Center UI, but reported errors. Do the errors convey why nothing happens when I click App Center? If so, how do I fix it?
/apps>SNAPD_DEBUG=1 snap run snap-store
2025/07/09 17:36:15.818386 tool_linux.go:69: DEBUG: re-exec not supported on distro "rocky" yet
2025/07/09 17:36:15.819246 logger.go:273: DEBUG: -- snap startup {"stage":"start", "time":"1752082575.819242"}
2025/07/09 17:36:15.819435 apparmor.go:401: DEBUG: apparmor parser err: file does not exist
2025/07/09 17:36:15.829822 cmd_run.go:1268: DEBUG: executing snap-confine from /usr/libexec/snapd/snap-confine
2025/07/09 17:36:15.835791 cmd_run.go:439: DEBUG: SELinux not enabled
2025/07/09 17:36:15.837972 tracking.go:48: DEBUG: creating transient scope snap.snap-store.snap-store
2025/07/09 17:36:15.839030 tracking.go:217: DEBUG: using session bus
2025/07/09 17:36:15.840582 tracking.go:350: DEBUG: create transient scope job: /org/freedesktop/systemd1/job/661
2025/07/09 17:36:15.849703 tracking.go:450: DEBUG: job result is "done"
2025/07/09 17:36:15.849775 tracking.go:457: DEBUG: transient scope snap.snap-store.snap-store-87da8d0b-f951-45b7-a651-996419e56e1e.scope created
2025/07/09 17:36:15.850015 tracking.go:153: DEBUG: waited 10.882349ms for tracking
2025/07/09 17:36:15.850049 logger.go:273: DEBUG: -- snap startup {"stage":"snap to snap-confine", "time":"1752082575.850046"}
DEBUG: -- snap startup {"stage":"snap-confine enter", "time":"1752082575.852810"}
DEBUG: SNAP_MOUNT_DIR (probed): /var/lib/snapd/snap
DEBUG: umask reset, old umask was 022
DEBUG: security tag: snap.snap-store.snap-store
DEBUG: executable: /usr/lib/snapd/snap-exec
DEBUG: confinement: non-classic
DEBUG: base snap: core22
DEBUG: ruid: 26499, euid: 0, suid: 0
DEBUG: rgid: 20, egid: 20, sgid: 20
DEBUG: -- snap startup {"stage":"snap-confine mount namespace start", "time":"1752082575.853649"}
DEBUG: creating lock directory /run/snapd/lock (if missing)
DEBUG: set_effective_identity uid:0 (change: no), gid:0 (change: yes)
DEBUG: opening lock directory /run/snapd/lock
DEBUG: set_effective_identity uid:0 (change: no), gid:20 (change: yes)
DEBUG: opening lock file: /run/snapd/lock/.lock
DEBUG: set_effective_identity uid:0 (change: no), gid:0 (change: yes)
DEBUG: set_effective_identity uid:0 (change: no), gid:20 (change: yes)
DEBUG: sanity timeout initialized and set for 30 seconds
DEBUG: acquiring exclusive lock (scope (global), uid 0)
DEBUG: sanity timeout reset and disabled
DEBUG: ensuring that snap mount directory is shared
DEBUG: unsharing snap namespace directory
DEBUG: set_effective_identity uid:0 (change: no), gid:0 (change: yes)
DEBUG: set_effective_identity uid:0 (change: no), gid:20 (change: yes)
DEBUG: releasing lock 5
DEBUG: opened snap-update-ns executable as file descriptor 5
DEBUG: opened snap-discard-ns executable as file descriptor 6
DEBUG: creating lock directory /run/snapd/lock (if missing)
DEBUG: set_effective_identity uid:0 (change: no), gid:0 (change: yes)
DEBUG: opening lock directory /run/snapd/lock
DEBUG: set_effective_identity uid:0 (change: no), gid:20 (change: yes)
DEBUG: opening lock file: /run/snapd/lock/snap-store.lock
DEBUG: set_effective_identity uid:0 (change: no), gid:0 (change: yes)
DEBUG: set_effective_identity uid:0 (change: no), gid:20 (change: yes)
DEBUG: sanity timeout initialized and set for 30 seconds
DEBUG: acquiring exclusive lock (scope snap-store, uid 0)
DEBUG: sanity timeout reset and disabled
DEBUG: initializing mount namespace: snap-store
DEBUG: device cgroup not required due to base core22
DEBUG: setting up device cgroup, mode "optional"
DEBUG: libudev has current tags support
DEBUG: device /sys/devices/pci0000:00/0000:00:0f.0/drm/card0 has matching current tag
DEBUG: get bpf object at path /sys/fs/bpf/snap/snap_snap-store_snap-store
DEBUG: found existing device map
DEBUG: get next key for map 8
DEBUG: get next key for map 8
DEBUG: get next key for map 8
DEBUG: get next key for map 8
DEBUG: get next key for map 8
DEBUG: get next key for map 8
DEBUG: get next key for map 8
DEBUG: get next key for map 8
DEBUG: get next key for map 8
DEBUG: get next key for map 8
DEBUG: get next key for map 8
DEBUG: get next key for map 8
DEBUG: get next key for map 8
DEBUG: get next key for map 8
DEBUG: get next key for map 8
DEBUG: get next key for map 8
DEBUG: get next key for map 8
DEBUG: get next key for map 8
DEBUG: get next key for map 8
DEBUG: get next key for map 8
DEBUG: get next key for map 8
DEBUG: get next key for map 8
DEBUG: found 21 existing entries in devices map
DEBUG: delete key for c 226:128
DEBUG: delete elem in map 8
DEBUG: delete key for c 1:7
DEBUG: delete elem in map 8
DEBUG: delete key for c 226:0
DEBUG: delete elem in map 8
DEBUG: delete key for c 1:3
DEBUG: delete elem in map 8
DEBUG: delete key for c 5:0
DEBUG: delete elem in map 8
DEBUG: delete key for c 1:8
DEBUG: delete elem in map 8
DEBUG: delete key for c 137:-1
DEBUG: delete elem in map 8
DEBUG: delete key for c 251:0
DEBUG: delete elem in map 8
DEBUG: delete key for c 136:-1
DEBUG: delete elem in map 8
DEBUG: delete key for c 141:-1
DEBUG: delete elem in map 8
DEBUG: delete key for c 140:-1
DEBUG: delete elem in map 8
DEBUG: delete key for c 5:2
DEBUG: delete elem in map 8
DEBUG: delete key for c 10:239
DEBUG: delete elem in map 8
DEBUG: delete key for c 5:1
DEBUG: delete elem in map 8
DEBUG: delete key for c 1:9
DEBUG: delete elem in map 8
DEBUG: delete key for c 1:5
DEBUG: delete elem in map 8
DEBUG: delete key for c 10:200
DEBUG: delete elem in map 8
DEBUG: delete key for c 142:-1
DEBUG: delete elem in map 8
DEBUG: delete key for c 139:-1
DEBUG: delete elem in map 8
DEBUG: delete key for c 138:-1
DEBUG: delete elem in map 8
DEBUG: delete key for c 143:-1
DEBUG: delete elem in map 8
DEBUG: load program of type 0xf, 33 instructions
DEBUG: v2 allow c 1:3
DEBUG: v2 allow c 1:5
DEBUG: v2 allow c 1:7
DEBUG: v2 allow c 1:8
DEBUG: v2 allow c 1:9
DEBUG: v2 allow c 5:0
DEBUG: v2 allow c 5:1
DEBUG: v2 allow c 5:2
DEBUG: v2 allow c 136:4294967295
DEBUG: v2 allow c 137:4294967295
DEBUG: v2 allow c 138:4294967295
DEBUG: v2 allow c 139:4294967295
DEBUG: v2 allow c 140:4294967295
DEBUG: v2 allow c 141:4294967295
DEBUG: v2 allow c 142:4294967295
DEBUG: v2 allow c 143:4294967295
DEBUG: v2 allow c 10:239
DEBUG: v2 allow c 10:200
DEBUG: inspecting type of device: /dev/dri/card0
DEBUG: v2 allow c 226:0
DEBUG: device /sys/devices/pci0000:00/0000:00:0f.0/drm/card0/card0-Virtual-1 has matching current tag
DEBUG: cannot get major/minor numbers for syspath /sys/devices/pci0000:00/0000:00:0f.0/drm/card0/card0-Virtual-1
DEBUG: device /sys/devices/pci0000:00/0000:00:0f.0/drm/card0/card0-Virtual-2 has matching current tag
DEBUG: cannot get major/minor numbers for syspath /sys/devices/pci0000:00/0000:00:0f.0/drm/card0/card0-Virtual-2
DEBUG: device /sys/devices/pci0000:00/0000:00:0f.0/drm/card0/card0-Virtual-3 has matching current tag
DEBUG: cannot get major/minor numbers for syspath /sys/devices/pci0000:00/0000:00:0f.0/drm/card0/card0-Virtual-3
DEBUG: device /sys/devices/pci0000:00/0000:00:0f.0/drm/card0/card0-Virtual-4 has matching current tag
DEBUG: cannot get major/minor numbers for syspath /sys/devices/pci0000:00/0000:00:0f.0/drm/card0/card0-Virtual-4
DEBUG: device /sys/devices/pci0000:00/0000:00:0f.0/drm/card0/card0-Virtual-5 has matching current tag
DEBUG: cannot get major/minor numbers for syspath /sys/devices/pci0000:00/0000:00:0f.0/drm/card0/card0-Virtual-5
DEBUG: device /sys/devices/pci0000:00/0000:00:0f.0/drm/card0/card0-Virtual-6 has matching current tag
DEBUG: cannot get major/minor numbers for syspath /sys/devices/pci0000:00/0000:00:0f.0/drm/card0/card0-Virtual-6
DEBUG: device /sys/devices/pci0000:00/0000:00:0f.0/drm/card0/card0-Virtual-7 has matching current tag
DEBUG: cannot get major/minor numbers for syspath /sys/devices/pci0000:00/0000:00:0f.0/drm/card0/card0-Virtual-7
DEBUG: device /sys/devices/pci0000:00/0000:00:0f.0/drm/card0/card0-Virtual-8 has matching current tag
DEBUG: cannot get major/minor numbers for syspath /sys/devices/pci0000:00/0000:00:0f.0/drm/card0/card0-Virtual-8
DEBUG: device /sys/devices/pci0000:00/0000:00:0f.0/drm/renderD128 has matching current tag
DEBUG: inspecting type of device: /dev/dri/renderD128
DEBUG: v2 allow c 226:128
DEBUG: device /sys/devices/virtual/dma_heap/system has matching current tag
DEBUG: inspecting type of device: /dev/dma_heap/system
DEBUG: v2 allow c 251:0
DEBUG: process in cgroup /user.slice/user-26499.slice/user@26499.service/app.slice/snap.snap-store.snap-store-87da8d0b-f951-45b7-a651-996419e56e1e.scope
DEBUG: cgroup /sys/fs/cgroup//user.slice/user-26499.slice/user@26499.service/app.slice/snap.snap-store.snap-store-87da8d0b-f951-45b7-a651-996419e56e1e.scope opened at 10
DEBUG: attach type 0x6 program 9 to cgroup 10
DEBUG: associated snap application process 2330968 with device cgroup snap.snap-store.snap-store
DEBUG: forked support process 2330984
DEBUG: helper process waiting for command
DEBUG: sanity timeout initialized and set for 30 seconds
DEBUG: block device of snap core22, revision 2010 is 7:0
DEBUG: sanity timeout initialized and set for 30 seconds
DEBUG: joining preserved mount namespace for inspection
DEBUG: found base snap device 7:0 on /usr
DEBUG: sanity timeout reset and disabled
DEBUG: preserved mount is not stale, reusing
DEBUG: joined preserved mount namespace snap-store
DEBUG: joining preserved per-user mount namespace
DEBUG: unsharing the mount namespace (per-user)
DEBUG: sc_setup_user_mounts: snap-store
DEBUG: performing operation: (disabled) use debug build to see details
DEBUG: set_effective_identity uid:0 (change: no), gid:0 (change: yes)
DEBUG: calling snapd tool snap-update-ns
DEBUG: waiting for snapd tool snap-update-ns to terminate
change.go:576: DEBUG: current mount entries
change.go:576: DEBUG: desired mount entries (sorted)
change.go:578: DEBUG: - /run/user/26499/doc/by-app/snap.snap-store /run/user/26499/doc none bind,rw,x-snapd.ignore-missing 0 0
change.go:659: DEBUG: desiredIDs: map[/run/user/26499/doc:true]
change.go:660: DEBUG: reuse: map[]
change.go:717: DEBUG: processing mount entries
change.go:711: DEBUG: adding independent entry: /run/user/26499/doc/by-app/snap.snap-store /run/user/26499/doc none bind,rw,x-snapd.ignore-missing 0 0
change.go:779: DEBUG: all mimics:
change.go:576: DEBUG: mount entries ordered as they will be applied
change.go:578: DEBUG: - /run/user/26499/doc/by-app/snap.snap-store /run/user/26499/doc none bind,rw,x-snapd.ignore-missing 0 0
change.go:351: DEBUG: mount name:"/run/user/26499/doc/by-app/snap.snap-store" dir:"/run/user/26499/doc" type:"none" opts:MS_BIND unparsed:"" (error: <nil>)
DEBUG: snap-update-ns finished successfully
DEBUG: set_effective_identity uid:0 (change: no), gid:20 (change: yes)
DEBUG: NOT preserving per-user mount namespace
DEBUG: releasing lock 7
DEBUG: sending command 0 to helper process (pid: 2330984)
DEBUG: waiting for response from helper
DEBUG: sanity timeout reset and disabled
DEBUG: helper process received command 0
DEBUG: helper process exiting
DEBUG: waiting for the helper process to exit
DEBUG: helper process exited normally
DEBUG: resetting PATH to values in sync with core snap
DEBUG: -- snap startup {"stage":"snap-confine mount namespace finish", "time":"1752082575.874175"}
DEBUG: set_effective_identity uid:26499 (change: yes), gid:20 (change: yes)
DEBUG: creating user data directory: /u/mike/snap/snap-store/1270
DEBUG: SELinux not enabled
DEBUG: ruid: 26499, euid: 26499, suid: 0
DEBUG: setting capabilities bounding set
DEBUG: regaining SYS_ADMIN
DEBUG: loading bpf program for security tag snap.snap-store.snap-store
DEBUG: clearing SYS_ADMIN
DEBUG: execv(/usr/lib/snapd/snap-exec, /usr/lib/snapd/snap-exec...)
DEBUG: argv[1] = snap-store.snap-store
DEBUG: umask restored to 022
DEBUG: cannot open path of the original working directory /apps
DEBUG: the process has been placed in the special void directory
DEBUG: -- snap startup {"stage":"snap-confine to snap-exec", "time":"1752082575.878429"}
2025/07/09 17:36:15.882144 logger.go:273: DEBUG: -- snap startup {"stage":"snap-exec to app", "time":"1752082575.882141"}
Gtk-Message: 17:36:15.960: Failed to load module "xapp-gtk3-module"
VMware: No 3D enabled (0, Success).
libGL error: glx: failed to create dri3 screen
libGL error: failed to load driver: vmwgfx
flutter: INFO snap-store: Logging to /u/mike/snap/snap-store/1270/.local/share/snap-store/snap-store.log
(snap-store:2330968): GLib-WARNING **: 17:36:16.156: getpwuid_r(): failed due to unknown user id (26499)
flutter: INFO appstream: Unsupported locale: C. Defaulting to "en".
** (snap-store:2330968): CRITICAL **: 17:36:16.172: Failed to read XDG desktop portal settings: GDBus.Error:org.freedesktop.portal.Error.NotFound: Requested setting not found