[Bug 1908275] Re: ubuntu dock + desktop icons disappeared

[Lazar Janos]

I managed to fix it simply by reinstall -- 'sudo apt-get remove gnome-shell-extension-ubuntu-dock' or even better 'sudo apt-get remove gnome-shell-extensions gnome-shell-extension-ubuntu-dock'.
Other gnome extensions are still impossible to add though, however it may be a different problem.

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Title:
  ubuntu dock + desktop icons disappeared

Status in ubiquity package in Ubuntu:
  Confirmed

Bug description:
  After starting my computer, ubuntu dock was absent. Through using the hot corner it is reachable and functional, but otherwise it is invisible.
  The settings | appearance menu: position on screen dropdown goes blank, but setting anything does not either change (fix) the position. The rest of settings is greyed out.
  The hints from https://itsfoss.com/disable-ubuntu-dock/: the "extensions" application does not list anything from the "built-in" section, e.g. desktop icons + ubuntu appindicators + ubuntu dock.
  In case I try to reinstall (enable?) dock from gnome extensions, it says "error". Before the on-off button changed permanently to "error", triggering it put these lines in logs:

  Dec 15 15:02:07 gep gnome-shell[15353]: Archive:  /tmp/VX9BV0.shell-extension.zip
  Dec 15 15:02:07 gep gnome-shell[15353]:   inflating: /home/gep/.local/share/gnome-shell/extensions/dock at gnome-shell-extensions.gcampax.github.com/locale/it/LC_MESSAGES/gnome-shell-extensions.mo
  Dec 15 15:02:07 gep gnome-shell[15353]:   inflating: /home/gep/.local/share/gnome-shell/extensions/dock at gnome-shell-extensions.gcampax.github.com/COPYING
  Dec 15 15:02:07 gep gnome-shell[15353]:    creating: /home/gep/.local/share/gnome-shell/extensions/dock at gnome-shell-extensions.gcampax.github.com/locale/he/LC_MESSAGES/
  Dec 15 15:02:07 gep gnome-shell[15353]:    creating: /home/gep/.local/share/gnome-shell/extensions/dock at gnome-shell-extensions.gcampax.github.com/schemas/
  Dec 15 15:02:07 gep gnome-shell[15353]:   inflating: /home/gep/.local/share/gnome-shell/extensions/dock at gnome-shell-extensions.gcampax.github.com/schemas/org.gnome.shell.extensions.dock.gschema.xml
  Dec 15 15:02:07 gep gnome-shell[15353]:   inflating: /home/gep/.local/share/gnome-shell/extensions/dock at gnome-shell-extensions.gcampax.github.com/stylesheet.css
  Dec 15 15:02:07 gep gnome-shell[15353]:   inflating: /home/gep/.local/share/gnome-shell/extensions/dock at gnome-shell-extensions.gcampax.github.com/extension.js
  Dec 15 15:02:07 gep gnome-shell[15353]:   inflating: /home/gep/.local/share/gnome-shell/extensions/dock at gnome-shell-extensions.gcampax.github.com/schemas/gschemas.compiled
  Dec 15 15:02:07 gep gnome-shell[15353]:   inflating: /home/gep/.local/share/gnome-shell/extensions/dock at gnome-shell-extensions.gcampax.github.com/convenience.js
  Dec 15 15:02:07 gep gnome-shell[15353]:   inflating: /home/gep/.local/share/gnome-shell/extensions/dock at gnome-shell-extensions.gcampax.github.com/locale/he/LC_MESSAGES/gnome-shell-extensions.mo
  Dec 15 15:02:07 gep gnome-shell[15353]:  extracting: /home/gep/.local/share/gnome-shell/extensions/dock at gnome-shell-extensions.gcampax.github.com/metadata.json
  Dec 15 15:02:07 gep gnome-shell[1823]: JS ERROR: Extension dock at gnome-shell-extensions.gcampax.github.com: TypeError: Shell.GenericContainer is not a constructor#012_init@/home/gep/.local/share/gnome-shell/extensions/dock at gnome-shell-extensions.gcampax.github.com/extension.js:391:22#012wrapper at resource:///org/gnome/gjs/modules/script/_legacy.js:82:27#012_Base.prototype._construct at resource:///org/gnome/gjs/modules/script/_legacy.js:18:10#012newClass at resource:///org/gnome/gjs/modules/script/_legacy.js:114:21#012enable@/home/gep/.local/share/gnome-shell/extensions/dock at gnome-shell-extensions.gcampax.github.com/extension.js:985:12#012_callExtensionEnable at resource:///org/gnome/shell/ui/extensionSystem.js:167:32#012loadExtension at resource:///org/gnome/shell/ui/extensionSystem.js:349:26#012callback at resource:///org/gnome/shell/ui/extensionDownloader.js:234:39#012gotExtensionZipFile/<@resource:///org/gnome/shell/ui/extensionDownloader.js:115:13

  It may be the result of system corruption, since in the last years my
  computer tends NOT to come back from suspend (from 30% now it reached
  100%).

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: ubiquity (not installed)
  ProcVersionSignature: Ubuntu 5.4.0-58.64-generic 5.4.73
  Uname: Linux 5.4.0-58-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27.13
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  Date: Tue Dec 15 15:13:19 2020
  InstallCmdLine: file=/cdrom/preseed/ubuntu.seed boot=casper only-ubiquity initrd=/casper/initrd quiet splash ---
  InstallationDate: Installed on 2019-10-12 (430 days ago)
  InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
  SourcePackage: ubiquity
  Symptom: installation
  UpgradeStatus: No upgrade log present (probably fresh install)

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