This happend to me repeatedly on Ubuntu Bionic too, making snaps uninstallable. How can such bugs come through. They can be easily catched with automated tests. I remember this bug happened to me after a fresh Ubuntu Bionic installation. An now again after updating snap. Please automate your tests! alex@sun:~/my/project/intrafind/if-sitesearch/ops/al-provisioning$ ps afx PID TTY STAT TIME COMMAND 2 ? S 0:00 [kthreadd] 4 ? I< 0:00 \_ [kworker/0:0H] 6 ? I< 0:00 \_ [mm_percpu_wq] 7 ? S 0:01 \_ [ksoftirqd/0] 8 ? I 2:28 \_ [rcu_sched] 9 ? I 0:00 \_ [rcu_bh] 10 ? S 0:00 \_ [migration/0] 11 ? S 0:00 \_ [watchdog/0] 12 ? S 0:00 \_ [cpuhp/0] 13 ? S 0:00 \_ [cpuhp/1] 14 ? S 0:00 \_ [watchdog/1] 15 ? S 0:00 \_ [migration/1] 16 ? S 0:02 \_ [ksoftirqd/1] 18 ? I< 0:00 \_ [kworker/1:0H] 19 ? S 0:00 \_ [cpuhp/2] 20 ? S 0:00 \_ [watchdog/2] 21 ? S 0:00 \_ [migration/2] 22 ? S 0:01 \_ [ksoftirqd/2] 24 ? I< 0:00 \_ [kworker/2:0H] 25 ? S 0:00 \_ [cpuhp/3] 26 ? S 0:00 \_ [watchdog/3] 27 ? S 0:00 \_ [migration/3] 28 ? S 0:02 \_ [ksoftirqd/3] 30 ? I< 0:00 \_ [kworker/3:0H] 31 ? S 0:00 \_ [cpuhp/4] 32 ? S 0:00 \_ [watchdog/4] 33 ? S 0:00 \_ [migration/4] 34 ? S 0:01 \_ [ksoftirqd/4] 36 ? I< 0:00 \_ [kworker/4:0H] 37 ? S 0:00 \_ [cpuhp/5] 38 ? S 0:00 \_ [watchdog/5] 39 ? S 0:00 \_ [migration/5] 40 ? S 0:01 \_ [ksoftirqd/5] 42 ? I< 0:00 \_ [kworker/5:0H] 43 ? S 0:00 \_ [cpuhp/6] 44 ? S 0:00 \_ [watchdog/6] 45 ? S 0:00 \_ [migration/6] 46 ? S 0:03 \_ [ksoftirqd/6] 48 ? I< 0:00 \_ [kworker/6:0H] 49 ? S 0:00 \_ [cpuhp/7] 50 ? S 0:00 \_ [watchdog/7] 51 ? S 0:00 \_ [migration/7] 52 ? S 0:01 \_ [ksoftirqd/7] 54 ? I< 0:00 \_ [kworker/7:0H] 55 ? S 0:00 \_ [kdevtmpfs] 56 ? I< 0:00 \_ [netns] 57 ? S 0:00 \_ [rcu_tasks_kthre] 58 ? S 0:23 \_ [kauditd] 61 ? S 0:00 \_ [khungtaskd] 62 ? S 0:00 \_ [oom_reaper] 63 ? I< 0:00 \_ [writeback] 64 ? S 0:00 \_ [kcompactd0] 65 ? SN 0:00 \_ [ksmd] 66 ? SN 0:00 \_ [khugepaged] 67 ? I< 0:00 \_ [crypto] 68 ? I< 0:00 \_ [kintegrityd] 69 ? I< 0:00 \_ [kblockd] 76 ? I< 0:00 \_ [ata_sff] 77 ? I< 0:00 \_ [md] 78 ? I< 0:00 \_ [edac-poller] 80 ? I< 0:00 \_ [devfreq_wq] 81 ? I< 0:00 \_ [watchdogd] 84 ? S 0:00 \_ [kswapd0] 85 ? S 0:00 \_ [ecryptfs-kthrea] 127 ? I< 0:00 \_ [kthrotld] 128 ? I< 0:00 \_ [acpi_thermal_pm] 133 ? I< 0:00 \_ [ipv6_addrconf] 142 ? I< 0:00 \_ [kstrp] 163 ? I< 0:00 \_ [charger_manager] 216 ? I< 0:00 \_ [nvme-wq] 217 ? S 0:00 \_ [scsi_eh_0] 218 ? I< 0:00 \_ [scsi_tmf_0] 219 ? S 0:00 \_ [scsi_eh_1] 220 ? I< 0:00 \_ [scsi_tmf_1] 261 ? S 0:51 \_ [i915/signal:0] 262 ? S 0:01 \_ [i915/signal:1] 263 ? S 0:00 \_ [i915/signal:2] 264 ? S 0:00 \_ [i915/signal:4] 406 ? I< 0:00 \_ [kworker/0:1H] 416 ? I< 0:00 \_ [kdmflush] 417 ? I< 0:00 \_ [bioset] 419 ? I< 0:00 \_ [kcryptd_io] 420 ? I< 0:00 \_ [kcryptd] 421 ? S 0:32 \_ [dmcrypt_write] 422 ? I< 0:00 \_ [bioset] 453 ? I< 0:00 \_ [kworker/7:1H] 454 ? I< 0:00 \_ [kworker/1:1H] 456 ? I< 0:00 \_ [kworker/5:1H] 457 ? I< 0:00 \_ [kworker/6:1H] 462 ? I< 0:00 \_ [kworker/2:1H] 463 ? I< 0:00 \_ [kworker/3:1H] 466 ? S 0:26 \_ [jbd2/dm-0-8] 467 ? I< 0:00 \_ [ext4-rsv-conver] 641 ? S 1:06 \_ [irq/51-DLL07BE:] 804 ? I< 0:00 \_ [kmemstick] 807 ? I< 0:00 \_ [cfg80211] 841 ? I< 0:00 \_ [ath10k_wq] 842 ? I< 0:00 \_ [ath10k_aux_wq] 968 ? S< 0:00 \_ [loop1] 969 ? S< 0:00 \_ [loop2] 970 ? S< 0:00 \_ [loop3] 971 ? I< 0:00 \_ [kworker/4:1H] 973 ? S< 0:00 \_ [loop5] 974 ? S< 0:00 \_ [loop6] 975 ? S< 0:00 \_ [loop7] 976 ? S< 0:00 \_ [loop8] 977 ? S< 0:00 \_ [loop9] 978 ? S< 0:00 \_ [loop10] 979 ? S< 0:00 \_ [loop11] 981 ? I< 0:00 \_ [ext4-rsv-conver] 999 ? S< 0:00 \_ [loop12] 1024 ? S< 0:00 \_ [loop13] 1064 ? S< 0:00 \_ [loop14] 1100 ? S< 0:00 \_ [loop15] 1931 ? S< 0:00 \_ [krfcommd] 12710 ? I< 0:02 \_ [kworker/u17:3] 12853 ? I< 0:01 \_ [kworker/u17:5] 13906 ? I< 0:01 \_ [kworker/u17:0] 14080 ? I< 0:02 \_ [kworker/u17:7] 14507 ? I 0:00 \_ [kworker/4:2] 14605 ? S 0:00 \_ [irq/126-mei_me] 14606 ? I 0:00 \_ [kworker/0:3] 16818 ? I 0:00 \_ [kworker/6:2] 17629 ? I 0:00 \_ [kworker/2:4] 21561 ? S< 0:00 \_ [loop0] 21659 ? S< 0:00 \_ [loop4] 21673 ? I 0:00 \_ [kworker/1:3] 21767 ? I 0:01 \_ [kworker/u16:0] 21790 ? I< 0:00 \_ [kworker/u17:4] 21853 ? I 0:01 \_ [kworker/u16:1] 22016 ? I 0:00 \_ [kworker/3:0] 22075 ? I 0:00 \_ [kworker/5:1] 22386 ? I 0:00 \_ [kworker/u16:2] 22486 ? I< 0:00 \_ [kworker/u17:1] 22505 ? I 0:00 \_ [kworker/5:2] 22525 ? I 0:00 \_ [kworker/1:0] 22618 ? I 0:00 \_ [kworker/7:3] 22657 ? I 0:00 \_ [kworker/6:0] 22782 ? I 0:00 \_ [kworker/0:1] 22931 ? I< 0:00 \_ [kworker/u17:8] 23115 ? I 0:00 \_ [kworker/3:1] 23162 ? I 0:00 \_ [kworker/2:1] 23179 ? I< 0:00 \_ [kworker/u17:2] 23294 ? I 0:00 \_ [kworker/4:0] 23390 ? I 0:00 \_ [kworker/7:1] 23478 ? I 0:00 \_ [kworker/5:0] 23496 ? I 0:00 \_ [kworker/u16:3] 23504 ? I 0:00 \_ [kworker/1:1] 23509 ? I< 0:00 \_ [kworker/u17:6] 23551 ? I 0:00 \_ [kworker/0:0] 23646 ? I 0:00 \_ [kworker/2:0] 23702 ? I 0:00 \_ [kworker/7:0] 23719 ? I 0:00 \_ [kworker/4:1] 23753 ? I 0:00 \_ [kworker/6:1] 23821 ? I 0:00 \_ [kworker/3:2] 1 ? Ss 1:33 /sbin/init splash 508 ? S